[tarantool-patches] [PATCH v4 1/8] sql: rework syntax errors

imeevma at tarantool.org imeevma at tarantool.org
Wed Mar 13 20:03:06 MSK 2019


This patch reworks SQL syntax errors. After this patch, these
error will be set as Tarantool errors.

Part of #3965
---
 src/box/errcode.h                          |  7 +++++
 src/box/sql/build.c                        |  6 ++---
 src/box/sql/parse.y                        | 41 ++++++++++++++++++------------
 src/box/sql/select.c                       | 11 ++++----
 src/box/sql/tokenize.c                     |  7 ++---
 test/box/misc.result                       |  6 +++++
 test/sql-tap/alter2.test.lua               |  4 +--
 test/sql-tap/blob.test.lua                 | 20 +++++++--------
 test/sql-tap/check.test.lua                | 10 ++++----
 test/sql-tap/colname.test.lua              |  2 +-
 test/sql-tap/count.test.lua                |  2 +-
 test/sql-tap/default.test.lua              |  4 +--
 test/sql-tap/e_select1.test.lua            | 18 ++++++-------
 test/sql-tap/gh2168-temp-tables.test.lua   |  4 +--
 test/sql-tap/identifier_case.test.lua      |  2 +-
 test/sql-tap/index-info.test.lua           |  2 +-
 test/sql-tap/index1.test.lua               |  2 +-
 test/sql-tap/index7.test.lua               |  2 +-
 test/sql-tap/join.test.lua                 |  2 +-
 test/sql-tap/keyword1.test.lua             |  2 +-
 test/sql-tap/misc1.test.lua                |  8 +++---
 test/sql-tap/misc5.test.lua                |  6 ++---
 test/sql-tap/null.test.lua                 |  8 +++---
 test/sql-tap/pragma.test.lua               |  4 +--
 test/sql-tap/select1.test.lua              | 20 +++++++--------
 test/sql-tap/select3.test.lua              |  4 +--
 test/sql-tap/start-transaction.test.lua    | 14 +++++-----
 test/sql-tap/table.test.lua                | 10 ++++----
 test/sql-tap/tkt3935.test.lua              | 14 +++++-----
 test/sql-tap/tokenize.test.lua             | 26 +++++++++----------
 test/sql-tap/trigger1.test.lua             | 14 +++++-----
 test/sql-tap/view.test.lua                 |  4 +--
 test/sql-tap/with1.test.lua                |  6 ++---
 test/sql-tap/with2.test.lua                | 18 ++++++-------
 test/sql/checks.result                     |  2 +-
 test/sql/collation.result                  | 12 ++++-----
 test/sql/foreign-keys.result               | 10 +++++---
 test/sql/gh-3888-values-blob-assert.result |  8 +++---
 test/sql/iproto.result                     | 10 ++++----
 test/sql/misc.result                       | 14 +++++-----
 test/sql/on-conflict.result                | 16 ++++++------
 test/sql/types.result                      | 13 ++++++----
 42 files changed, 213 insertions(+), 182 deletions(-)

diff --git a/src/box/errcode.h b/src/box/errcode.h
index a1fcf01..f2f47c0 100644
--- a/src/box/errcode.h
+++ b/src/box/errcode.h
@@ -231,6 +231,13 @@ struct errcode_record {
 	/*176 */_(ER_SQL_CANT_RESOLVE_FIELD,	"Can’t resolve field '%s'") \
 	/*177 */_(ER_INDEX_EXISTS_IN_SPACE,	"Index '%s' already exists in space '%s'") \
 	/*178 */_(ER_INCONSISTENT_TYPES,	"Inconsistent types: expected %s got %s") \
+	/*179 */_(ER_SQL_SYNTAX,		"Syntax error in %s: %s") \
+	/*180 */_(ER_SQL_STACK_OVERFLOW,	"Failed to parse SQL statement: parser stack limit reached") \
+	/*181 */_(ER_SQL_SELECT_WILDCARD,	"Failed to expand '*' in SELECT statement without FROM clause") \
+	/*182 */_(ER_SQL_STATEMENT_EMPTY,	"Failed to execute an empty SQL statement") \
+	/*183 */_(ER_SQL_KEYWORD_IS_RESERVED,	"Keyword '%.*s' is reserved. Please use double quotes if '%.*s' is an identifier.") \
+	/*184 */_(ER_SQL_UNRECOGNIZED_SYNTAX,	"Syntax error near '%.*s'") \
+	/*185 */_(ER_SQL_UNKNOWN_TOKEN,		"Syntax error: unrecognized token: '%.*s'") \
 
 /*
  * !IMPORTANT! Please follow instructions at start of the file
diff --git a/src/box/sql/build.c b/src/box/sql/build.c
index e9851d9..f112c9f 100644
--- a/src/box/sql/build.c
+++ b/src/box/sql/build.c
@@ -2823,9 +2823,9 @@ sqlSrcListAppendFromTerm(Parse * pParse,	/* Parsing context */
 	struct SrcList_item *pItem;
 	sql *db = pParse->db;
 	if (!p && (pOn || pUsing)) {
-		sqlErrorMsg(pParse, "a JOIN clause is required before %s",
-				(pOn ? "ON" : "USING")
-		    );
+		diag_set(ClientError, ER_SQL_SYNTAX, "FROM clause",
+			 "a JOIN clause is required before ON and USING");
+		sql_parser_error(pParse);
 		goto append_from_error;
 	}
 	p = sqlSrcListAppend(db, p, pTable);
diff --git a/src/box/sql/parse.y b/src/box/sql/parse.y
index 996f55d..66fb44b 100644
--- a/src/box/sql/parse.y
+++ b/src/box/sql/parse.y
@@ -33,13 +33,16 @@
   UNUSED_PARAMETER(yymajor);  /* Silence some compiler warnings */
   assert( TOKEN.z[0] );  /* The tokenizer always gives us a token */
   if (yypParser->is_fallback_failed && TOKEN.isReserved) {
-    sqlErrorMsg(pParse, "keyword \"%T\" is reserved", &TOKEN);
+    diag_set(ClientError, ER_SQL_KEYWORD_IS_RESERVED, TOKEN.n, TOKEN.z,
+             TOKEN.n, TOKEN.z);
   } else {
-    sqlErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN);
+    diag_set(ClientError, ER_SQL_UNRECOGNIZED_SYNTAX, TOKEN.n, TOKEN.z);
   }
+  sql_parser_error(pParse);
 }
 %stack_overflow {
-  sqlErrorMsg(pParse, "parser stack overflow");
+  diag_set(ClientError, ER_SQL_STACK_OVERFLOW);
+  sql_parser_error(pParse);
 }
 
 // The name of the generated procedure that implements the parser
@@ -114,7 +117,8 @@ ecmd ::= explain cmdx SEMI. {
 		sql_finish_coding(pParse);
 }
 ecmd ::= SEMI. {
-  sqlErrorMsg(pParse, "syntax error: empty request");
+  diag_set(ClientError, ER_SQL_STATEMENT_EMPTY);
+  sql_parser_error(pParse);
 }
 explain ::= .
 explain ::= EXPLAIN.              { pParse->explain = 1; }
@@ -227,7 +231,8 @@ columnname(A) ::= nm(A) typedef(Y). {sqlAddColumn(pParse,&A,&Y);}
 %type nm {Token}
 nm(A) ::= id(A). {
   if(A.isReserved) {
-    sqlErrorMsg(pParse, "keyword \"%T\" is reserved", &A);
+    diag_set(ClientError, ER_SQL_KEYWORD_IS_RESERVED, A.n, A.z, A.n, A.z);
+    sql_parser_error(pParse);
   }
 }
 
@@ -897,14 +902,17 @@ expr(A) ::= VARIABLE(X).     {
   } else if (!(X.z[0]=='#' && sqlIsdigit(X.z[1]))) {
     u32 n = X.n;
     spanExpr(&A, pParse, TK_VARIABLE, X);
-    if (A.pExpr->u.zToken[0] == '?' && n > 1)
-        sqlErrorMsg(pParse, "near \"%T\": syntax error", &t);
-    else
-        sqlExprAssignVarNumber(pParse, A.pExpr, n);
+    if (A.pExpr->u.zToken[0] == '?' && n > 1) {
+      diag_set(ClientError, ER_SQL_UNRECOGNIZED_SYNTAX, t.n, t.z);
+      sql_parser_error(pParse);
+    } else {
+      sqlExprAssignVarNumber(pParse, A.pExpr, n);
+    }
   }else{
     assert( t.n>=2 );
     spanSet(&A, &t, &t);
-    sqlErrorMsg(pParse, "near \"%T\": syntax error", &t);
+    diag_set(ClientError, ER_SQL_UNRECOGNIZED_SYNTAX, t.n, t.z);
+    sql_parser_error(pParse);
     A.pExpr = NULL;
   }
 }
@@ -1378,14 +1386,15 @@ trnm(A) ::= nm DOT nm(X). {
 //
 tridxby ::= .
 tridxby ::= INDEXED BY nm. {
-  sqlErrorMsg(pParse,
-        "the INDEXED BY clause is not allowed on UPDATE or DELETE statements "
-        "within triggers");
+  diag_set(ClientError, ER_SQL_SYNTAX, "trigger body", "the INDEXED BY clause "\
+           "is not allowed on UPDATE or DELETE statements within triggers");
+  sql_parser_error(pParse);
 }
 tridxby ::= NOT INDEXED. {
-  sqlErrorMsg(pParse,
-        "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements "
-        "within triggers");
+  diag_set(ClientError, ER_SQL_SYNTAX, "trigger body", "the NOT INDEXED "\
+           "clause is not allowed on UPDATE or DELETE statements within "\
+           "triggers");
+  sql_parser_error(pParse);
 }
 
 
diff --git a/src/box/sql/select.c b/src/box/sql/select.c
index 782da1f..ef24760 100644
--- a/src/box/sql/select.c
+++ b/src/box/sql/select.c
@@ -2092,8 +2092,9 @@ computeLimitRegisters(Parse * pParse, Select * p, int iBreak)
 		if((p->pLimit->flags & EP_Collate) != 0 ||
 		   (p->pOffset != NULL &&
 		   (p->pOffset->flags & EP_Collate) != 0)) {
-			sqlErrorMsg(pParse, "near \"COLLATE\": "\
-						"syntax error");
+			diag_set(ClientError, ER_SQL_UNRECOGNIZED_SYNTAX,
+				 sizeof("COLLATE"), "COLLATE");
+			sql_parser_error(pParse);
 			return;
 		}
 		p->iLimit = iLimit = ++pParse->nMem;
@@ -5049,11 +5050,11 @@ selectExpander(Walker * pWalker, Select * p)
 						diag_set(ClientError,
 							 ER_NO_SUCH_SPACE,
 							 zTName);
-						sql_parser_error(pParse);
 					} else {
-						sqlErrorMsg(pParse,
-								"no tables specified");
+						diag_set(ClientError,
+							 ER_SQL_SELECT_WILDCARD);
 					}
+					sql_parser_error(pParse);
 				}
 			}
 		}
diff --git a/src/box/sql/tokenize.c b/src/box/sql/tokenize.c
index abf837d..58685c4 100644
--- a/src/box/sql/tokenize.c
+++ b/src/box/sql/tokenize.c
@@ -506,9 +506,10 @@ sqlRunParser(Parse * pParse, const char *zSql, char **pzErrMsg)
 				break;
 			}
 			if (tokenType == TK_ILLEGAL) {
-				sqlErrorMsg(pParse,
-						"unrecognized token: \"%T\"",
-						&pParse->sLastToken);
+				diag_set(ClientError, ER_SQL_UNKNOWN_TOKEN,
+					 pParse->sLastToken.n,
+					 pParse->sLastToken.z);
+				sql_parser_error(pParse);
 				break;
 			}
 		} else {
diff --git a/test/box/misc.result b/test/box/misc.result
index d9f5dd5..27579c6 100644
--- a/test/box/misc.result
+++ b/test/box/misc.result
@@ -508,6 +508,12 @@ t;
   176: box.error.SQL_CANT_RESOLVE_FIELD
   177: box.error.INDEX_EXISTS_IN_SPACE
   178: box.error.INCONSISTENT_TYPES
+  179: box.error.SQL_SYNTAX
+  180: box.error.SQL_STACK_OVERFLOW
+  181: box.error.SQL_SELECT_WILDCARD
+  182: box.error.SQL_STATEMENT_EMPTY
+  184: box.error.SQL_UNRECOGNIZED_SYNTAX
+  185: box.error.SQL_UNKNOWN_TOKEN
 ...
 test_run:cmd("setopt delimiter ''");
 ---
diff --git a/test/sql-tap/alter2.test.lua b/test/sql-tap/alter2.test.lua
index e219a36..beb6f5d 100755
--- a/test/sql-tap/alter2.test.lua
+++ b/test/sql-tap/alter2.test.lua
@@ -223,7 +223,7 @@ test:do_catchsql_test(
         ALTER TABLE child ADD CONSTRAINT fk FOREIGN KEY REFERENCES child(id);
     ]], {
         -- <alter2-4.1>
-        1, "near \"REFERENCES\": syntax error"
+        1, "Syntax error near 'REFERENCES'"
         -- </alter2-4.1>
     })
 
@@ -233,7 +233,7 @@ test:do_catchsql_test(
         ALTER TABLE child ADD CONSTRAINT fk () FOREIGN KEY REFERENCES child(id);
     ]], {
         -- <alter2-4.1>
-        1, "near \"(\": syntax error"
+        1, "Syntax error near '('"
         -- </alter2-4.2>
     })
 
diff --git a/test/sql-tap/blob.test.lua b/test/sql-tap/blob.test.lua
index 376d5b1..2b5c7a9 100755
--- a/test/sql-tap/blob.test.lua
+++ b/test/sql-tap/blob.test.lua
@@ -72,7 +72,7 @@ test:do_catchsql_test(
         SELECT X'01020k304', 100
     ]], {
         -- <blob-1.4>
-        1, [[unrecognized token: "X'01020k304'"]]
+        1, [[Syntax error: unrecognized token: 'X'01020k304'']]
         -- </blob-1.4>
     })
 
@@ -81,7 +81,7 @@ test:do_catchsql_test(
     [[
         SELECT X'01020, 100]], {
         -- <blob-1.5>
-        1, [[unrecognized token: "X'01020, 100"]]
+        1, [[Syntax error: unrecognized token: 'X'01020, 100']]
         -- </blob-1.5>
     })
 
@@ -91,7 +91,7 @@ test:do_catchsql_test(
         SELECT X'01020 100'
     ]], {
         -- <blob-1.6>
-        1, [[unrecognized token: "X'01020 100'"]]
+        1, [[Syntax error: unrecognized token: 'X'01020 100'']]
         -- </blob-1.6>
     })
 
@@ -101,7 +101,7 @@ test:do_catchsql_test(
         SELECT X'01001'
     ]], {
         -- <blob-1.7>
-        1, [[unrecognized token: "X'01001'"]]
+        1, [[Syntax error: unrecognized token: 'X'01001'']]
         -- </blob-1.7>
     })
 
@@ -111,7 +111,7 @@ test:do_catchsql_test(
         SELECT x'012/45'
     ]], {
         -- <blob-1.8>
-        1, [[unrecognized token: "x'012/45'"]]
+        1, [[Syntax error: unrecognized token: 'x'012/45'']]
         -- </blob-1.8>
     })
 
@@ -121,7 +121,7 @@ test:do_catchsql_test(
         SELECT x'012:45'
     ]], {
         -- <blob-1.9>
-        1, [[unrecognized token: "x'012:45'"]]
+        1, [[Syntax error: unrecognized token: 'x'012:45'']]
         -- </blob-1.9>
     })
 
@@ -131,7 +131,7 @@ test:do_catchsql_test(
         SELECT x'012 at 45'
     ]], {
         -- <blob-1.10>
-        1, [[unrecognized token: "x'012 at 45'"]]
+        1, [[Syntax error: unrecognized token: 'x'012 at 45'']]
         -- </blob-1.10>
     })
 
@@ -141,7 +141,7 @@ test:do_catchsql_test(
         SELECT x'012G45'
     ]], {
         -- <blob-1.11>
-        1, [[unrecognized token: "x'012G45'"]]
+        1, [[Syntax error: unrecognized token: 'x'012G45'']]
         -- </blob-1.11>
     })
 
@@ -151,7 +151,7 @@ test:do_catchsql_test(
         SELECT x'012`45'
     ]], {
         -- <blob-1.12>
-        1, [[unrecognized token: "x'012`45'"]]
+        1, [[Syntax error: unrecognized token: 'x'012`45'']]
         -- </blob-1.12>
     })
 
@@ -161,7 +161,7 @@ test:do_catchsql_test(
         SELECT x'012g45'
     ]], {
         -- <blob-1.13>
-        1, [[unrecognized token: "x'012g45'"]]
+        1, [[Syntax error: unrecognized token: 'x'012g45'']]
         -- </blob-1.13>
     })
 
diff --git a/test/sql-tap/check.test.lua b/test/sql-tap/check.test.lua
index 2bb1b2e..b6b7fc7 100755
--- a/test/sql-tap/check.test.lua
+++ b/test/sql-tap/check.test.lua
@@ -281,7 +281,7 @@ test:do_catchsql_test(
         );
     ]], {
         -- <check-2.10>
-        1,"near \",\": syntax error"
+        1,"Syntax error near ','"
         -- </check-2.10>
     })
 
@@ -295,7 +295,7 @@ test:do_catchsql_test(
         );
     ]], {
         -- <check-2.10>
-        1,"near \",\": syntax error"
+        1,"Syntax error near ','"
         -- </check-2.10>
     })
 
@@ -781,7 +781,7 @@ test:do_catchsql_test(
         ON CONFLICT REPLACE)
     ]], {
         -- <9.1>
-        1, "keyword \"ON\" is reserved"
+        1, "Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier."
         -- </9.1>
     })
 
@@ -792,7 +792,7 @@ test:do_catchsql_test(
         ON CONFLICT ABORT)
     ]], {
         -- <9.2>
-        1, "keyword \"ON\" is reserved"
+        1, "Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier."
         -- </9.2>
     })
 
@@ -803,7 +803,7 @@ test:do_catchsql_test(
         ON CONFLICT ROLLBACK)
     ]], {
         -- <9.3>
-        1, "keyword \"ON\" is reserved"
+        1, "Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier."
         -- </9.3>
     })
 
diff --git a/test/sql-tap/colname.test.lua b/test/sql-tap/colname.test.lua
index b7dd2b7..29fdf13 100755
--- a/test/sql-tap/colname.test.lua
+++ b/test/sql-tap/colname.test.lua
@@ -576,7 +576,7 @@ for i, val in ipairs(data) do
 end
 
 local data2 = {
-    {[['a']],{1, "/syntax error/"}}, -- because ' is delimiter for strings
+    {[['a']],{1, "/Syntax error/"}}, -- because ' is delimiter for strings
     {[[`a`]],{1, "/unrecognized token/"}}, -- because ` is undefined symbol
     {"[a]",{1, "/unrecognized token/"}} -- because [ is undefined symbol
 }
diff --git a/test/sql-tap/count.test.lua b/test/sql-tap/count.test.lua
index fbd60da..cf5bfcc 100755
--- a/test/sql-tap/count.test.lua
+++ b/test/sql-tap/count.test.lua
@@ -128,7 +128,7 @@ test:do_catchsql_test(
         SELECT count(DISTINCT *) FROM t2
     ]], {
         -- <count-2.2>
-        1, [[near "*": syntax error]]
+        1, [[Syntax error near '*']]
         -- </count-2.2>
     })
 
diff --git a/test/sql-tap/default.test.lua b/test/sql-tap/default.test.lua
index 267ce88..67151b0 100755
--- a/test/sql-tap/default.test.lua
+++ b/test/sql-tap/default.test.lua
@@ -224,7 +224,7 @@ test:do_catchsql_test(
         CREATE TABLE t6(id INTEGER PRIMARY KEY, b TEXT DEFAULT id);
     ]], {
     -- <default-5.2>
-    1, "near \"id\": syntax error"
+    1, "Syntax error near 'id'"
     -- </default-5.2>
 })
 
@@ -234,7 +234,7 @@ test:do_catchsql_test(
         CREATE TABLE t6(id INTEGER PRIMARY KEY, b TEXT DEFAULT "id");
     ]], {
     -- <default-5.3>
-    1, "near \"\"id\"\": syntax error"
+    1, "Syntax error near '\"id\"'"
     -- </default-5.3>
 })
 
diff --git a/test/sql-tap/e_select1.test.lua b/test/sql-tap/e_select1.test.lua
index 75fe81e..e190ad7 100755
--- a/test/sql-tap/e_select1.test.lua
+++ b/test/sql-tap/e_select1.test.lua
@@ -105,7 +105,7 @@ test:do_catchsql_test(
         SELECT count(*) FROM t1, t2 USING (a) ON (t1.a=t2.a)
     ]], {
         -- <e_select-0.1.5>
-        1, [[keyword "ON" is reserved]]
+        1, [[Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.]]
         -- </e_select-0.1.5>
     })
 
@@ -807,14 +807,14 @@ test:do_select_tests(
 -- FROM clause.
 --
 data = {
-    {"1.1", "SELECT a, b, c FROM z1 WHERE *",  'near \"*\": syntax error'},
-    {"1.2", "SELECT a, b, c FROM z1 GROUP BY *", 'near \"*\": syntax error'},
-    {"1.3", "SELECT 1 + * FROM z1",  'near \"*\": syntax error'},
-    {"1.4", "SELECT * + 1 FROM z1", 'near \"+\": syntax error'},
-    {"2.1", "SELECT *", 'no tables specified'},
-    {"2.2", "SELECT * WHERE 1", 'no tables specified'},
-    {"2.3", "SELECT * WHERE 0", 'no tables specified'},
-    {"2.4", "SELECT count(*), *", 'no tables specified' }
+    {"1.1", "SELECT a, b, c FROM z1 WHERE *",  "Syntax error near '*'"},
+    {"1.2", "SELECT a, b, c FROM z1 GROUP BY *", "Syntax error near '*'"},
+    {"1.3", "SELECT 1 + * FROM z1",  "Syntax error near '*'"},
+    {"1.4", "SELECT * + 1 FROM z1", "Syntax error near '+'"},
+    {"2.1", "SELECT *", "Failed to expand '*' in SELECT statement without FROM clause"},
+    {"2.2", "SELECT * WHERE 1", "Failed to expand '*' in SELECT statement without FROM clause"},
+    {"2.3", "SELECT * WHERE 0", "Failed to expand '*' in SELECT statement without FROM clause"},
+    {"2.4", "SELECT count(*), *", "Failed to expand '*' in SELECT statement without FROM clause"}
 }
 
 for _, val in ipairs(data) do
diff --git a/test/sql-tap/gh2168-temp-tables.test.lua b/test/sql-tap/gh2168-temp-tables.test.lua
index 536e187..3b29c9e 100755
--- a/test/sql-tap/gh2168-temp-tables.test.lua
+++ b/test/sql-tap/gh2168-temp-tables.test.lua
@@ -8,7 +8,7 @@ test:do_catchsql_test(
 		CREATE TEMP TABLE tmp1 (id INTEGER PRIMARY KEY);
 	]], {
 		-- <trigger2-10.1>
-	1, "near \"TEMP\": syntax error"	
+	1, "Syntax error near 'TEMP'"
 		-- <trigger2-10.1>
 });
 
@@ -23,7 +23,7 @@ test:do_catchsql_test(
 		END;
 	]], {
 		-- <trigger2-10.1>
-	1, "near \"TEMP\": syntax error"	
+	1, "Syntax error near 'TEMP'"
 		-- <trigger2-10.1>
 });
 
diff --git a/test/sql-tap/identifier_case.test.lua b/test/sql-tap/identifier_case.test.lua
index 923d5e6..74c7ce2 100755
--- a/test/sql-tap/identifier_case.test.lua
+++ b/test/sql-tap/identifier_case.test.lua
@@ -238,7 +238,7 @@ test:do_catchsql_test(
 data = {
     { 1,  [[ 'a' < 'b' collate binary ]], {1, "Collation 'BINARY' does not exist"}},
     { 2,  [[ 'a' < 'b' collate "binary" ]], {0, {1}}},
-    { 3,  [[ 'a' < 'b' collate 'binary' ]], {1, [[near "'binary'": syntax error]]}},
+    { 3,  [[ 'a' < 'b' collate 'binary' ]], {1, [[Syntax error near ''binary'']]}},
     { 4,  [[ 'a' < 'b' collate "unicode" ]], {0, {1}}},
     { 5,  [[ 5 < 'b' collate "unicode" ]], {0, {1}}},
     { 6,  [[ 5 < 'b' collate unicode ]], {1,"Collation 'UNICODE' does not exist"}},
diff --git a/test/sql-tap/index-info.test.lua b/test/sql-tap/index-info.test.lua
index d052e8c..a5ed9a9 100755
--- a/test/sql-tap/index-info.test.lua
+++ b/test/sql-tap/index-info.test.lua
@@ -26,7 +26,7 @@ test:do_catchsql_test(
     "index-info-1.2",
     "PRAGMA index_info = t1.a;",
     {
-        1, "near \".\": syntax error",
+        1, "Syntax error near '.'",
     })
 
 -- Case: single column index with an integer column.
diff --git a/test/sql-tap/index1.test.lua b/test/sql-tap/index1.test.lua
index fa97018..b23e9b3 100755
--- a/test/sql-tap/index1.test.lua
+++ b/test/sql-tap/index1.test.lua
@@ -994,7 +994,7 @@ test:do_catchsql_test(
         CREATE INDEX temp.i21 ON t6(c);
     ]], {
         -- <index-21.1>
-        1, "near \".\": syntax error"
+        1, "Syntax error near '.'"
         -- </index-21.1>
     })
 
diff --git a/test/sql-tap/index7.test.lua b/test/sql-tap/index7.test.lua
index 0a7fe60..7dd9efa 100755
--- a/test/sql-tap/index7.test.lua
+++ b/test/sql-tap/index7.test.lua
@@ -292,7 +292,7 @@ test:do_catchsql_test(
         CREATE TABLE t1 (a INTEGER PRIMARY KEY, b INTEGER);
         CREATE UNIQUE INDEX i ON t1 (a) WHERE a = 3;
     ]], {
-        1, "keyword \"WHERE\" is reserved"
+        1, "Keyword 'WHERE' is reserved. Please use double quotes if 'WHERE' is an identifier."
     })
 
 -- Currently, when a user tries to create index (or primary key,
diff --git a/test/sql-tap/join.test.lua b/test/sql-tap/join.test.lua
index bda4091..df272a9 100755
--- a/test/sql-tap/join.test.lua
+++ b/test/sql-tap/join.test.lua
@@ -570,7 +570,7 @@ test:do_catchsql_test(
         SELECT * FROM t1 USING(a) 
     ]], {
         -- <join-3.5>
-        1, "a JOIN clause is required before USING"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </join-3.5>
     })
 
diff --git a/test/sql-tap/keyword1.test.lua b/test/sql-tap/keyword1.test.lua
index 44fa1cf..9c524d6 100755
--- a/test/sql-tap/keyword1.test.lua
+++ b/test/sql-tap/keyword1.test.lua
@@ -238,7 +238,7 @@ for _, kw in ipairs(bannedkws) do
     test:do_catchsql_test(
         "bannedkw1-"..kw..".1",
         query, {
-            1, 'keyword "'..kw..'" is reserved'
+            1, "Keyword '"..kw.."' is reserved. Please use double quotes if '"..kw.."' is an identifier."
         })
 end
 
diff --git a/test/sql-tap/misc1.test.lua b/test/sql-tap/misc1.test.lua
index 4358b58..1b288da 100755
--- a/test/sql-tap/misc1.test.lua
+++ b/test/sql-tap/misc1.test.lua
@@ -271,7 +271,7 @@ test:do_catchsql_test(
         UPDATE t3 SET a=0 WHEREwww b=2;
     ]], {
         -- <misc1-5.1>
-        1, [[near "WHEREwww": syntax error]]
+        1, [[Syntax error near 'WHEREwww']]
         -- </misc1-5.1>
     })
 
@@ -413,7 +413,7 @@ test:do_catchsql_test(
         SELECT *;
     ]], {
         -- <misc1-8.1>
-        1, "no tables specified"
+        1, "Failed to expand '*' in SELECT statement without FROM clause"
         -- </misc1-8.1>
     })
 
@@ -1037,7 +1037,7 @@ test:do_catchsql_test(
         select''like''like''like#0;
     ]], {
         -- <misc1-21.1>
-        1, [[near "#0": syntax error]]
+        1, [[Syntax error near '#0']]
         -- </misc1-21.1>
     })
 
@@ -1047,7 +1047,7 @@ test:do_catchsql_test(
         VALUES(0,0x0MATCH#0;
     ]], {
         -- <misc1-21.2>
-        1, [[near ";": syntax error]]
+        1, [[Syntax error near ';']]
         -- </misc1-21.2>
     })
 
diff --git a/test/sql-tap/misc5.test.lua b/test/sql-tap/misc5.test.lua
index 0852741..5f98f21 100755
--- a/test/sql-tap/misc5.test.lua
+++ b/test/sql-tap/misc5.test.lua
@@ -299,7 +299,7 @@ test:do_test(
         return test:catchsql(sql)
     end, {
         -- <misc5-7.1>
-        1, "parser stack overflow"
+        1, "Failed to parse SQL statement: parser stack limit reached"
         -- </misc5-7.1>
     })
 
@@ -347,7 +347,7 @@ test:do_catchsql_test(
         SELECT 123abc
     ]], {
         -- <misc5-10.1>
-        1, [[unrecognized token: "123abc"]]
+        1, [[Syntax error: unrecognized token: '123abc']]
         -- </misc5-10.1>
     })
 
@@ -357,7 +357,7 @@ test:do_catchsql_test(
         SELECT 1*123.4e5ghi;
     ]], {
         -- <misc5-10.2>
-        1, [[unrecognized token: "123.4e5ghi"]]
+        1, [[Syntax error: unrecognized token: '123.4e5ghi']]
         -- </misc5-10.2>
     })
 
diff --git a/test/sql-tap/null.test.lua b/test/sql-tap/null.test.lua
index 66135d3..50a2cfb 100755
--- a/test/sql-tap/null.test.lua
+++ b/test/sql-tap/null.test.lua
@@ -517,7 +517,7 @@ test:do_catchsql_test(
     ]],
     {
     -- <index-1.3>
-    1, "near \"1\": syntax error"
+    1, "Syntax error near '1'"
     -- <index-1.3>
     })
 
@@ -528,7 +528,7 @@ test:do_catchsql_test(
     ]],
     {
     -- <index-1.3>
-    1, "near \"1\": syntax error"
+    1, "Syntax error near '1'"
     -- <index-1.3>
     })
 
@@ -539,7 +539,7 @@ test:do_catchsql_test(
     ]],
     {
     -- <index-1.3>
-    1, "near \"1\": syntax error"
+    1, "Syntax error near '1'"
     -- <index-1.3>
     })
 
@@ -550,7 +550,7 @@ test:do_catchsql_test(
     ]],
     {
     -- <index-1.3>
-    1, "near \"1\": syntax error"
+    1, "Syntax error near '1'"
     -- <index-1.3>
     })
 
diff --git a/test/sql-tap/pragma.test.lua b/test/sql-tap/pragma.test.lua
index 975a0e9..14d622f 100755
--- a/test/sql-tap/pragma.test.lua
+++ b/test/sql-tap/pragma.test.lua
@@ -43,7 +43,7 @@ test:do_catchsql_test(
 	[[
 		pragma sql_default_engine 'memtx';
 	]], {
-	1, 'near \"\'memtx\'\": syntax error'
+	1, "Syntax error near ''memtx''"
 })
 
 test:do_catchsql_test(
@@ -51,7 +51,7 @@ test:do_catchsql_test(
 	[[
 		pragma sql_default_engine 1;
 	]], {
-	1, 'near \"1\": syntax error'
+	1, "Syntax error near '1'"
 })
 
 --
diff --git a/test/sql-tap/select1.test.lua b/test/sql-tap/select1.test.lua
index 6c35b6f..d73429a 100755
--- a/test/sql-tap/select1.test.lua
+++ b/test/sql-tap/select1.test.lua
@@ -1406,7 +1406,7 @@ test:do_catchsql_test(
         SELECT f1 FROM test1 WHERE f2=;
     ]], {
         -- <select1-7.1>
-        1, [[near ";": syntax error]]
+        1, [[Syntax error near ';']]
         -- </select1-7.1>
     })
 
@@ -1416,7 +1416,7 @@ test:do_catchsql_test(
             SELECT f1 FROM test1 UNION SELECT WHERE;
         ]], {
             -- <select1-7.2>
-            1, [[keyword "WHERE" is reserved]]
+            1, [[Keyword 'WHERE' is reserved. Please use double quotes if 'WHERE' is an identifier.]]
             -- </select1-7.2>
         })
 
@@ -1428,7 +1428,7 @@ test:do_catchsql_test(
     [[
         SELECT f1 FROM test1 as "hi", test2 as]], {
         -- <select1-7.3>
-        1, [[keyword "as" is reserved]]
+        1, [[Keyword 'as' is reserved. Please use double quotes if 'as' is an identifier.]]
         -- </select1-7.3>
     })
 
@@ -1438,7 +1438,7 @@ test:do_catchsql_test(
         SELECT f1 FROM test1 ORDER BY;
     ]], {
         -- <select1-7.4>
-        1, [[near ";": syntax error]]
+        1, [[Syntax error near ';']]
         -- </select1-7.4>
     })
 
@@ -1448,7 +1448,7 @@ test:do_catchsql_test(
         SELECT f1 FROM test1 ORDER BY f1 desc, f2 where;
     ]], {
         -- <select1-7.5>
-        1, [[keyword "where" is reserved]]
+        1, [[Keyword 'where' is reserved. Please use double quotes if 'where' is an identifier.]]
         -- </select1-7.5>
     })
 
@@ -1458,7 +1458,7 @@ test:do_catchsql_test(
         SELECT count(f1,f2 FROM test1;
     ]], {
         -- <select1-7.6>
-        1, [[keyword "FROM" is reserved]]
+        1, [[Keyword 'FROM' is reserved. Please use double quotes if 'FROM' is an identifier.]]
         -- </select1-7.6>
     })
 
@@ -1468,7 +1468,7 @@ test:do_catchsql_test(
         SELECT count(f1,f2+) FROM test1;
     ]], {
         -- <select1-7.7>
-        1, [[near ")": syntax error]]
+        1, [[Syntax error near ')']]
         -- </select1-7.7>
     })
 
@@ -1478,7 +1478,7 @@ test:do_catchsql_test(
         SELECT f1 FROM test1 ORDER BY f2, f1+;
     ]], {
         -- <select1-7.8>
-        1, [[near ";": syntax error]]
+        1, [[Syntax error near ';']]
         -- </select1-7.8>
     })
 
@@ -1488,7 +1488,7 @@ test:do_catchsql_test(
         SELECT f1 FROM test1 LIMIT 5+3 OFFSET 11 ORDER BY f2;
     ]], {
         -- <select1-7.9>
-        1, [[keyword "ORDER" is reserved]]
+        1, [[Keyword 'ORDER' is reserved. Please use double quotes if 'ORDER' is an identifier.]]
         -- </select1-7.9>
     })
 
@@ -2075,7 +2075,7 @@ test:do_catchsql_test(
         SELECT 1 FROM (SELECT *)
     ]], {
         -- <select1-16.1>
-        1, "no tables specified"
+        1, "Failed to expand '*' in SELECT statement without FROM clause"
         -- </select1-16.1>
     })
 
diff --git a/test/sql-tap/select3.test.lua b/test/sql-tap/select3.test.lua
index e7e306e..9fb825f 100755
--- a/test/sql-tap/select3.test.lua
+++ b/test/sql-tap/select3.test.lua
@@ -182,7 +182,7 @@ test:do_catchsql_test("select3-2.13", [[
   SELECT log, count(*) FROM t1 GROUP BY ORDER BY log;
 ]], {
   -- <select3-2.13>
-  1, [[keyword "ORDER" is reserved]]
+  1, [[Keyword 'ORDER' is reserved. Please use double quotes if 'ORDER' is an identifier.]]
   -- </select3-2.13>
 })
 
@@ -190,7 +190,7 @@ test:do_catchsql_test("select3-2.14", [[
   SELECT log, count(*) FROM t1 GROUP BY;
 ]], {
   -- <select3-2.14>
-  1, [[near ";": syntax error]]
+  1, [[Syntax error near ';']]
   -- </select3-2.14>
 })
 
diff --git a/test/sql-tap/start-transaction.test.lua b/test/sql-tap/start-transaction.test.lua
index 82356ae..c5703d4 100755
--- a/test/sql-tap/start-transaction.test.lua
+++ b/test/sql-tap/start-transaction.test.lua
@@ -21,7 +21,7 @@ test:do_catchsql_test(
 		COMMIT;
 	]], {
 		-- <start-transaction-1.0>
-		1, "near \"BEGIN\": syntax error"
+		1, "Syntax error near 'BEGIN'"
 		-- <start-transaction-1.0>
 	})
 
@@ -46,7 +46,7 @@ test:do_catchsql_test(
 		COMMIT;
 	]], {
 		-- <start-transaction-1.1>
-		1, "near \"BEGIN\": syntax error"
+		1, "Syntax error near 'BEGIN'"
 		-- <start-transaction-1.1>
 	})
 
@@ -94,7 +94,7 @@ test:do_catchsql_test(
 		COMMIT TRANSACTION;
 	]], {
 		-- <start-transaction-1.6>
-		1, "keyword \"TRANSACTION\" is reserved"
+		1, "Keyword 'TRANSACTION' is reserved. Please use double quotes if 'TRANSACTION' is an identifier."
 		-- <start-transaction-1.6>
 	})
 
@@ -119,7 +119,7 @@ test:do_catchsql_test(
 		END;
 	]], {
 		-- <start-transaction-1.8>
-		1, "keyword \"END\" is reserved"
+		1, "Keyword 'END' is reserved. Please use double quotes if 'END' is an identifier."
 		-- <start-transaction-1.8>
 	})
 
@@ -144,7 +144,7 @@ test:do_catchsql_test(
 		END TRANSACTION;
 	]], {
 		-- <start-transaction-1.10>
-		1, "keyword \"END\" is reserved"
+		1, "Keyword 'END' is reserved. Please use double quotes if 'END' is an identifier."
 		-- <start-transaction-1.10>
 	})
 
@@ -193,7 +193,7 @@ test:do_catchsql_test(
 		COMMIT;
 	]], {
 		-- <start-transaction-1.14>
-		1, "keyword \"TRANSACTION\" is reserved"
+		1, "Keyword 'TRANSACTION' is reserved. Please use double quotes if 'TRANSACTION' is an identifier."
 		-- <start-transaction-1.14>
 	})
 
@@ -246,7 +246,7 @@ test:do_catchsql_test(
 		COMMIT;
 	]], {
 		-- <start-transaction-1.18>
-		1, "keyword \"TRANSACTION\" is reserved"
+		1, "Keyword 'TRANSACTION' is reserved. Please use double quotes if 'TRANSACTION' is an identifier."
 		-- <start-transaction-1.18>
 	})
 
diff --git a/test/sql-tap/table.test.lua b/test/sql-tap/table.test.lua
index aa3eea8..c89d890 100755
--- a/test/sql-tap/table.test.lua
+++ b/test/sql-tap/table.test.lua
@@ -620,7 +620,7 @@ test:do_catchsql_test(
 		CREATE TEMP TABLE t1(a INTEGER PRIMARY KEY, b VARCHAR(10));
 	]], {
 	-- <temp>
-	1, "near \"TEMP\": syntax error"
+	1, "Syntax error near 'TEMP'"
 	-- <temp>
 	})
 
@@ -630,7 +630,7 @@ test:do_catchsql_test(
 		CREATE TEMPORARY TABLE t1(a INTEGER PRIMARY KEY, b VARCHAR(10));
 	]], {
 	-- <temporary>
-	1, "near \"TEMPORARY\": syntax error"
+	1, "Syntax error near 'TEMPORARY'"
 	-- <temporary>
 	})
 
@@ -1257,7 +1257,7 @@ test:do_catchsql_test(
         );
     ]], {
         -- <table-22.1>
-        1,"keyword \"CONSTRAINT\" is reserved"
+        1,"Keyword 'CONSTRAINT' is reserved. Please use double quotes if 'CONSTRAINT' is an identifier."
         -- </table-22.1>
     })
 
@@ -1322,7 +1322,7 @@ test:do_catchsql_test(
         );
     ]], {
         -- <table-22.6>
-        1,"keyword \"CONSTRAINT\" is reserved"
+        1,"Keyword 'CONSTRAINT' is reserved. Please use double quotes if 'CONSTRAINT' is an identifier."
         -- </table-22.6>
     })
 
@@ -1336,7 +1336,7 @@ test:do_catchsql_test(
         );
     ]], {
         -- <table-22.7>
-        1,"keyword \"CONSTRAINT\" is reserved"
+        1,"Keyword 'CONSTRAINT' is reserved. Please use double quotes if 'CONSTRAINT' is an identifier."
         -- </table-22.7>
     })
 
diff --git a/test/sql-tap/tkt3935.test.lua b/test/sql-tap/tkt3935.test.lua
index e13391c..cc8fea7 100755
--- a/test/sql-tap/tkt3935.test.lua
+++ b/test/sql-tap/tkt3935.test.lua
@@ -57,7 +57,7 @@ test:do_catchsql_test(
         SELECT a FROM (t1) AS t ON b USING(a) 
     ]], {
         -- <tkt3935.4>
-        1, "a JOIN clause is required before ON"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.4>
     })
 
@@ -67,7 +67,7 @@ test:do_catchsql_test(
         SELECT a FROM (t1) AS t ON b 
     ]], {
         -- <tkt3935.5>
-        1, "a JOIN clause is required before ON"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.5>
     })
 
@@ -77,7 +77,7 @@ test:do_catchsql_test(
         SELECT a FROM (SELECT * FROM t1) AS t ON b USING(a) 
     ]], {
         -- <tkt3935.6>
-        1, "a JOIN clause is required before ON"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.6>
     })
 
@@ -87,7 +87,7 @@ test:do_catchsql_test(
         SELECT a FROM (SELECT * FROM t1) AS t ON b 
     ]], {
         -- <tkt3935.7>
-        1, "a JOIN clause is required before ON"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.7>
     })
 
@@ -97,7 +97,7 @@ test:do_catchsql_test(
         SELECT a FROM t1 AS t ON b 
     ]], {
         -- <tkt3935.8>
-        1, "a JOIN clause is required before ON"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.8>
     })
 
@@ -107,7 +107,7 @@ test:do_catchsql_test(
         SELECT a FROM t1 AS t ON b USING(a) 
     ]], {
         -- <tkt3935.9>
-        1, "a JOIN clause is required before ON"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.9>
     })
 
@@ -117,7 +117,7 @@ test:do_catchsql_test(
         SELECT a FROM t1 AS t USING(a) 
     ]], {
         -- <tkt3935.10>
-        1, "a JOIN clause is required before USING"
+        1, "Syntax error in FROM clause: a JOIN clause is required before ON and USING"
         -- </tkt3935.10>
     })
 
diff --git a/test/sql-tap/tokenize.test.lua b/test/sql-tap/tokenize.test.lua
index 9ef4fd0..b1a097e 100755
--- a/test/sql-tap/tokenize.test.lua
+++ b/test/sql-tap/tokenize.test.lua
@@ -26,7 +26,7 @@ test:do_catchsql_test(
         SELECT 1.0e+
     ]], {
         -- <tokenize-1.1>
-        1, [[unrecognized token: "1.0e"]]
+        1, [[Syntax error: unrecognized token: '1.0e']]
         -- </tokenize-1.1>
     })
 
@@ -36,7 +36,7 @@ test:do_catchsql_test(
         SELECT 1.0E+
     ]], {
         -- <tokenize-1.2>
-        1, [[unrecognized token: "1.0E"]]
+        1, [[Syntax error: unrecognized token: '1.0E']]
         -- </tokenize-1.2>
     })
 
@@ -46,7 +46,7 @@ test:do_catchsql_test(
         SELECT 1.0e-
     ]], {
         -- <tokenize-1.3>
-        1, [[unrecognized token: "1.0e"]]
+        1, [[Syntax error: unrecognized token: '1.0e']]
         -- </tokenize-1.3>
     })
 
@@ -56,7 +56,7 @@ test:do_catchsql_test(
         SELECT 1.0E-
     ]], {
         -- <tokenize-1.4>
-        1, [[unrecognized token: "1.0E"]]
+        1, [[Syntax error: unrecognized token: '1.0E']]
         -- </tokenize-1.4>
     })
 
@@ -66,7 +66,7 @@ test:do_catchsql_test(
         SELECT 1.0e+/
     ]], {
         -- <tokenize-1.5>
-        1, [[unrecognized token: "1.0e"]]
+        1, [[Syntax error: unrecognized token: '1.0e']]
         -- </tokenize-1.5>
     })
 
@@ -76,7 +76,7 @@ test:do_catchsql_test(
         SELECT 1.0E+:
     ]], {
         -- <tokenize-1.6>
-        1, [[unrecognized token: "1.0E"]]
+        1, [[Syntax error: unrecognized token: '1.0E']]
         -- </tokenize-1.6>
     })
 
@@ -86,7 +86,7 @@ test:do_catchsql_test(
         SELECT 1.0e-:
     ]], {
         -- <tokenize-1.7>
-        1, [[unrecognized token: "1.0e"]]
+        1, [[Syntax error: unrecognized token: '1.0e']]
         -- </tokenize-1.7>
     })
 
@@ -96,7 +96,7 @@ test:do_catchsql_test(
         SELECT 1.0E-/
     ]], {
         -- <tokenize-1.8>
-        1, [[unrecognized token: "1.0E"]]
+        1, [[Syntax error: unrecognized token: '1.0E']]
         -- </tokenize-1.8>
     })
 
@@ -106,7 +106,7 @@ test:do_catchsql_test(
         SELECT 1.0F+5
     ]], {
         -- <tokenize-1.9>
-        1, [[unrecognized token: "1.0F"]]
+        1, [[Syntax error: unrecognized token: '1.0F']]
         -- </tokenize-1.9>
     })
 
@@ -116,7 +116,7 @@ test:do_catchsql_test(
         SELECT 1.0d-10
     ]], {
         -- <tokenize-1.10>
-        1, [[unrecognized token: "1.0d"]]
+        1, [[Syntax error: unrecognized token: '1.0d']]
         -- </tokenize-1.10>
     })
 
@@ -126,7 +126,7 @@ test:do_catchsql_test(
         SELECT 1.0e,5
     ]], {
         -- <tokenize-1.11>
-        1, [[unrecognized token: "1.0e"]]
+        1, [[Syntax error: unrecognized token: '1.0e']]
         -- </tokenize-1.11>
     })
 
@@ -136,7 +136,7 @@ test:do_catchsql_test(
         SELECT 1.0E.10
     ]], {
         -- <tokenize-1.12>
-        1, [[unrecognized token: "1.0E"]]
+        1, [[Syntax error: unrecognized token: '1.0E']]
         -- </tokenize-1.12>
     })
 
@@ -145,7 +145,7 @@ test:do_catchsql_test(
     [[
         SELECT 1, 2 /*]], {
         -- <tokenize-2.1>
-        1, [[near "*": syntax error]]
+        1, [[Syntax error near '*']]
         -- </tokenize-2.1>
     })
 
diff --git a/test/sql-tap/trigger1.test.lua b/test/sql-tap/trigger1.test.lua
index 871a144..2984d4c 100755
--- a/test/sql-tap/trigger1.test.lua
+++ b/test/sql-tap/trigger1.test.lua
@@ -72,7 +72,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-1.1.3>
-        1, [[near "STATEMENT": syntax error]]
+        1, [[Syntax error near 'STATEMENT']]
         -- </trigger1-1.1.3>
     })
 
@@ -297,7 +297,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-2.1>
-        1, [[near ";": syntax error]]
+        1, [[Syntax error near ';']]
         -- </trigger1-2.1>
     })
 
@@ -310,7 +310,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-2.2>
-        1, [[near ";": syntax error]]
+        1, [[Syntax error near ';']]
         -- </trigger1-2.2>
     })
 
@@ -809,7 +809,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-16.4>
-        1, "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements within triggers"
+        1, "Syntax error in trigger body: the NOT INDEXED clause is not allowed on UPDATE or DELETE statements within triggers"
         -- </trigger1-16.4>
     })
 
@@ -821,7 +821,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-16.5>
-        1, "the INDEXED BY clause is not allowed on UPDATE or DELETE statements within triggers"
+        1, "Syntax error in trigger body: the INDEXED BY clause is not allowed on UPDATE or DELETE statements within triggers"
         -- </trigger1-16.5>
     })
 
@@ -833,7 +833,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-16.6>
-        1, "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements within triggers"
+        1, "Syntax error in trigger body: the NOT INDEXED clause is not allowed on UPDATE or DELETE statements within triggers"
         -- </trigger1-16.6>
     })
 
@@ -845,7 +845,7 @@ test:do_catchsql_test(
         END;
     ]], {
         -- <trigger1-16.7>
-        1, "the INDEXED BY clause is not allowed on UPDATE or DELETE statements within triggers"
+        1, "Syntax error in trigger body: the INDEXED BY clause is not allowed on UPDATE or DELETE statements within triggers"
         -- </trigger1-16.7>
     })
 
diff --git a/test/sql-tap/view.test.lua b/test/sql-tap/view.test.lua
index c99a0a5..72fdab8 100755
--- a/test/sql-tap/view.test.lua
+++ b/test/sql-tap/view.test.lua
@@ -293,7 +293,7 @@ test:do_catchsql_test(
         CREATE VIEW v1err(x,y DESC,z) AS SELECT a, b+c, c-b FROM t1;
     ]], {
         -- <view-3.3.4>
-        1, [[keyword "DESC" is reserved]]
+        1, [[Keyword 'DESC' is reserved. Please use double quotes if 'DESC' is an identifier.]]
         -- </view-3.3.4>
     })
 
@@ -961,7 +961,7 @@ test:do_catchsql_test(
         DROP VIEW main.nosuchview
     ]], {
         -- <view-17.2>
-        1, "near \".\": syntax error"
+        1, "Syntax error near '.'"
         -- </view-17.2>
     })
 
diff --git a/test/sql-tap/with1.test.lua b/test/sql-tap/with1.test.lua
index 7896483..add2345 100755
--- a/test/sql-tap/with1.test.lua
+++ b/test/sql-tap/with1.test.lua
@@ -178,7 +178,7 @@ test:do_catchsql_test(3.6, [[
   SELECT * FROM tmp;
 ]], {
   -- <3.6>
-  1, [[keyword "SELECT" is reserved]]
+  1, [[Keyword 'SELECT' is reserved. Please use double quotes if 'SELECT' is an identifier.]]
   -- </3.6>
 })
 
@@ -1018,7 +1018,7 @@ test:do_catchsql_test(13.1, [[
   SELECT i FROM c;
 ]], {
   -- <13.1>
-  1, "no tables specified"
+  1, "Failed to expand '*' in SELECT statement without FROM clause"
   -- </13.1>
 })
 
@@ -1027,7 +1027,7 @@ test:do_catchsql_test(13.2, [[
   SELECT i FROM c;
 ]], {
   -- <13.2>
-  1, "no tables specified"
+  1, "Failed to expand '*' in SELECT statement without FROM clause"
   -- </13.2>
 })
 
diff --git a/test/sql-tap/with2.test.lua b/test/sql-tap/with2.test.lua
index c27a9d1..ca3f00e 100755
--- a/test/sql-tap/with2.test.lua
+++ b/test/sql-tap/with2.test.lua
@@ -317,7 +317,7 @@ test:do_catchsql_test(4.1, [[
     SELECT * FROM x;
 ]], {
     -- <4.1>
-    1, [[near ")": syntax error]]
+    1, [[Syntax error near ')']]
     -- </4.1>
 })
 
@@ -519,7 +519,7 @@ test:do_catchsql_test(6.2, [[
     INSERT INTO t2 VALUES(1, 2,);
 ]], {
     -- <6.2>
-    1, [[near ")": syntax error]]
+    1, [[Syntax error near ')']]
     -- </6.2>
 })
 
@@ -528,7 +528,7 @@ test:do_catchsql_test("6.3.1", [[
     INSERT INTO t2 SELECT a, b, FROM t1;
 ]], {
     -- <6.3>
-    1, [[keyword "FROM" is reserved]]
+    1, [[Keyword 'FROM' is reserved. Please use double quotes if 'FROM' is an identifier.]]
     -- </6.3>
 })
 
@@ -546,7 +546,7 @@ test:do_catchsql_test(6.4, [[
     INSERT INTO t2 SELECT a, b, FROM t1 a a a;
 ]], {
     -- <6.4>
-    1, [[keyword "FROM" is reserved]]
+    1, [[Keyword 'FROM' is reserved. Please use double quotes if 'FROM' is an identifier.]]
     -- </6.4>
 })
 
@@ -555,7 +555,7 @@ test:do_catchsql_test(6.5, [[
     DELETE FROM t2 WHERE;
 ]], {
     -- <6.5>
-    1, [[near ";": syntax error]]
+    1, [[Syntax error near ';']]
     -- </6.5>
 })
 
@@ -563,7 +563,7 @@ test:do_catchsql_test(6.6, [[
     WITH x AS (SELECT * FROM t1) DELETE FROM t2 WHERE
 ]], {
     -- <6.6>
-    1, '/near .* syntax error/'
+    1, "Syntax error near '\n'"
     -- </6.6>
 })
 
@@ -571,7 +571,7 @@ test:do_catchsql_test(6.7, [[
     WITH x AS (SELECT * FROM t1) DELETE FROM t2 WHRE 1;
 ]], {
     -- <6.7>
-    1, '/near .* syntax error/'
+    1, "Syntax error near 'WHRE'"
     -- </6.7>
 })
 
@@ -579,7 +579,7 @@ test:do_catchsql_test(6.8, [[
     WITH x AS (SELECT * FROM t1) UPDATE t2 SET a = 10, b = ;
 ]], {
     -- <6.8>
-    1, '/near .* syntax error/'
+    1, "Syntax error near ';'"
     -- </6.8>
 })
 
@@ -587,7 +587,7 @@ test:do_catchsql_test(6.9, [[
     WITH x AS (SELECT * FROM t1) UPDATE t2 SET a = 10, b = 1 WHERE a===b;
 ]], {
     -- <6.9>
-    1, '/near .* syntax error/'
+    1, "Syntax error near '='"
     -- </6.9>
 })
 
diff --git a/test/sql/checks.result b/test/sql/checks.result
index 2eafae8..e31964c 100644
--- a/test/sql/checks.result
+++ b/test/sql/checks.result
@@ -30,7 +30,7 @@ t = {513, 1, 'test', 'memtx', 0, opts, format}
 s = box.space._space:insert(t)
 ---
 - error: 'Wrong space options (field 5): invalid expression specified (SQL error:
-    near "<": syntax error)'
+    Syntax error near ''<'')'
 ...
 opts = {checks = {{expr = 'X>5'}}}
 ---
diff --git a/test/sql/collation.result b/test/sql/collation.result
index faa9f81..3794990 100644
--- a/test/sql/collation.result
+++ b/test/sql/collation.result
@@ -14,23 +14,23 @@ box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
 -- All of these tests should throw error "near "COLLATE": syntax error"
 box.sql.execute("SELECT 1 LIMIT 1 COLLATE BINARY;")
 ---
-- error: 'near "COLLATE": syntax error'
+- error: Syntax error near 'COLLATE'
 ...
 box.sql.execute("SELECT 1 LIMIT 1 COLLATE BINARY OFFSET 1;")
 ---
-- error: 'near "COLLATE": syntax error'
+- error: Syntax error near 'COLLATE'
 ...
 box.sql.execute("SELECT 1 LIMIT 1 OFFSET 1 COLLATE BINARY;")
 ---
-- error: 'near "COLLATE": syntax error'
+- error: Syntax error near 'COLLATE'
 ...
 box.sql.execute("SELECT 1 LIMIT 1, 1 COLLATE BINARY;")
 ---
-- error: 'near "COLLATE": syntax error'
+- error: Syntax error near 'COLLATE'
 ...
 box.sql.execute("SELECT 1 LIMIT 1 COLLATE BINARY, 1;")
 ---
-- error: 'near "COLLATE": syntax error'
+- error: Syntax error near 'COLLATE'
 ...
 -- gh-3052: upper/lower support only default locale
 -- For tr-TR result depends on collation
@@ -102,7 +102,7 @@ cn = remote.connect(box.cfg.listen)
 ...
 cn:execute('select 1 limit ? collate not_exist', {1})
 ---
-- error: 'Failed to execute SQL statement: near "COLLATE": syntax error'
+- error: 'Failed to execute SQL statement: Syntax error near ''COLLATE'''
 ...
 cn:close()
 ---
diff --git a/test/sql/foreign-keys.result b/test/sql/foreign-keys.result
index becb4c2..3c6464e 100644
--- a/test/sql/foreign-keys.result
+++ b/test/sql/foreign-keys.result
@@ -358,19 +358,21 @@ box.sql.execute('CREATE TABLE t1 (id INT PRIMARY KEY);')
 ...
 box.sql.execute('CREATE TABLE t2 (id INT PRIMARY KEY REFERENCES t2 ON DELETE CASCADE ON DELETE RESTRICT);')
 ---
-- error: keyword "DELETE" is reserved
+- error: Keyword 'DELETE' is reserved. Please use double quotes if 'DELETE' is an
+    identifier.
 ...
 box.sql.execute('CREATE TABLE t2 (id INT PRIMARY KEY REFERENCES t2 ON DELETE CASCADE ON DELETE CASCADE);')
 ---
-- error: keyword "DELETE" is reserved
+- error: Keyword 'DELETE' is reserved. Please use double quotes if 'DELETE' is an
+    identifier.
 ...
 box.sql.execute('CREATE TABLE t2 (id INT PRIMARY KEY REFERENCES t2 ON DELETE CASCADE ON UPDATE RESTRICT ON DELETE RESTRICT);')
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute('CREATE TABLE t2 (id INT PRIMARY KEY REFERENCES t2 ON DELETE CASCADE MATCH FULL);')
 ---
-- error: keyword "MATCH" is reserved
+- error: Keyword 'MATCH' is reserved. Please use double quotes if 'MATCH' is an identifier.
 ...
 box.space.T1:drop()
 ---
diff --git a/test/sql/gh-3888-values-blob-assert.result b/test/sql/gh-3888-values-blob-assert.result
index 8deded7..611c10d 100644
--- a/test/sql/gh-3888-values-blob-assert.result
+++ b/test/sql/gh-3888-values-blob-assert.result
@@ -16,20 +16,20 @@ box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
 -- check 'VALUES' against typedef keywords (should fail)
 box.sql.execute('VALUES(scalar)')
 ---
-- error: 'near "scalar": syntax error'
+- error: Syntax error near 'scalar'
 ...
 box.sql.execute('VALUES(float)')
 ---
-- error: 'near "float": syntax error'
+- error: Syntax error near 'float'
 ...
 -- check 'SELECT' against typedef keywords (should fail)
 box.sql.execute('SELECT scalar')
 ---
-- error: 'near "scalar": syntax error'
+- error: Syntax error near 'scalar'
 ...
 box.sql.execute('SELECT float')
 ---
-- error: 'near "float": syntax error'
+- error: Syntax error near 'float'
 ...
 -- check 'VALUES' against ID (should fail)
 box.sql.execute('VALUES(TheColumnName)')
diff --git a/test/sql/iproto.result b/test/sql/iproto.result
index da7b40f..938aea9 100644
--- a/test/sql/iproto.result
+++ b/test/sql/iproto.result
@@ -96,7 +96,7 @@ cn:execute('insert into not_existing_table values ("kek")')
 ...
 cn:execute('insert qwerty gjsdjq  q  qwd qmq;; q;qwd;')
 ---
-- error: 'Failed to execute SQL statement: near "qwerty": syntax error'
+- error: 'Failed to execute SQL statement: Syntax error near ''qwerty'''
 ...
 -- Empty result.
 cn:execute('select id as identifier from test where a = 5;')
@@ -109,7 +109,7 @@ cn:execute('select id as identifier from test where a = 5;')
 -- netbox API errors.
 cn:execute(100)
 ---
-- error: 'Failed to execute SQL statement: near "100": syntax error'
+- error: 'Failed to execute SQL statement: Syntax error near ''100'''
 ...
 cn:execute('select 1', nil, {dry_run = true})
 ---
@@ -118,11 +118,11 @@ cn:execute('select 1', nil, {dry_run = true})
 -- Empty request.
 cn:execute('')
 ---
-- error: 'Failed to execute SQL statement: syntax error: empty request'
+- error: 'Failed to execute SQL statement: Failed to execute an empty SQL statement'
 ...
 cn:execute('   ;')
 ---
-- error: 'Failed to execute SQL statement: syntax error: empty request'
+- error: 'Failed to execute SQL statement: Failed to execute an empty SQL statement'
 ...
 --
 -- gh-3467: allow only positive integers under limit clause.
@@ -567,7 +567,7 @@ cn:execute('drop table if exists test3')
 --
 cn:execute('select ?1, ?2, ?3', {1, 2, 3})
 ---
-- error: 'Failed to execute SQL statement: near "?1": syntax error'
+- error: 'Failed to execute SQL statement: Syntax error near ''?1'''
 ...
 cn:execute('select $name, $name2', {1, 2})
 ---
diff --git a/test/sql/misc.result b/test/sql/misc.result
index ef104c1..9a8aa8d 100644
--- a/test/sql/misc.result
+++ b/test/sql/misc.result
@@ -14,11 +14,13 @@ box.sql.execute('select 1;')
 ...
 box.sql.execute('select 1; select 2;')
 ---
-- error: keyword "select" is reserved
+- error: Keyword 'select' is reserved. Please use double quotes if 'select' is an
+    identifier.
 ...
 box.sql.execute('create table t1 (id INT primary key); select 100;')
 ---
-- error: keyword "select" is reserved
+- error: Keyword 'select' is reserved. Please use double quotes if 'select' is an
+    identifier.
 ...
 box.space.t1 == nil
 ---
@@ -26,17 +28,17 @@ box.space.t1 == nil
 ...
 box.sql.execute(';')
 ---
-- error: 'syntax error: empty request'
+- error: Failed to execute an empty SQL statement
 ...
 box.sql.execute('')
 ---
-- error: 'syntax error: empty request'
+- error: Failed to execute an empty SQL statement
 ...
 box.sql.execute('     ;')
 ---
-- error: 'syntax error: empty request'
+- error: Failed to execute an empty SQL statement
 ...
 box.sql.execute('\n\n\n\t\t\t   ')
 ---
-- error: 'syntax error: empty request'
+- error: Failed to execute an empty SQL statement
 ...
diff --git a/test/sql/on-conflict.result b/test/sql/on-conflict.result
index 07bb403..6d37e69 100644
--- a/test/sql/on-conflict.result
+++ b/test/sql/on-conflict.result
@@ -13,37 +13,37 @@ box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
 --
 box.sql.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, v INTEGER UNIQUE ON CONFLICT ABORT)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute("CREATE TABLE q (id INTEGER PRIMARY KEY, v INTEGER UNIQUE ON CONFLICT FAIL)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute("CREATE TABLE p (id INTEGER PRIMARY KEY, v INTEGER UNIQUE ON CONFLICT IGNORE)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute("CREATE TABLE g (id INTEGER PRIMARY KEY, v INTEGER UNIQUE ON CONFLICT REPLACE)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute("CREATE TABLE e (id INTEGER PRIMARY KEY ON CONFLICT REPLACE, v INTEGER)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute("CREATE TABLE t1(a INT PRIMARY KEY ON CONFLICT REPLACE)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 box.sql.execute("CREATE TABLE t2(a INT PRIMARY KEY ON CONFLICT IGNORE)")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 -- CHECK constraint is illegal with REPLACE option.
 --
 box.sql.execute("CREATE TABLE t (id INTEGER PRIMARY KEY, a INTEGER CHECK (a > 5) ON CONFLICT REPLACE);")
 ---
-- error: keyword "ON" is reserved
+- error: Keyword 'ON' is reserved. Please use double quotes if 'ON' is an identifier.
 ...
 --
 -- gh-3473: Primary key can't be declared with NULL.
diff --git a/test/sql/types.result b/test/sql/types.result
index 11b045c..1220cc0 100644
--- a/test/sql/types.result
+++ b/test/sql/types.result
@@ -8,23 +8,26 @@ test_run = env.new()
 --
 box.sql.execute("CREATE TABLE t1 (id PRIMARY KEY);")
 ---
-- error: keyword "PRIMARY" is reserved
+- error: Keyword 'PRIMARY' is reserved. Please use double quotes if 'PRIMARY' is an
+    identifier.
 ...
 box.sql.execute("CREATE TABLE t1 (a, id INT PRIMARY KEY);")
 ---
-- error: 'near ",": syntax error'
+- error: Syntax error near ','
 ...
 box.sql.execute("CREATE TABLE t1 (id PRIMARY KEY, a INT);")
 ---
-- error: keyword "PRIMARY" is reserved
+- error: Keyword 'PRIMARY' is reserved. Please use double quotes if 'PRIMARY' is an
+    identifier.
 ...
 box.sql.execute("CREATE TABLE t1 (id INT PRIMARY KEY, a);")
 ---
-- error: 'near ")": syntax error'
+- error: Syntax error near ')'
 ...
 box.sql.execute("CREATE TABLE t1 (id INT PRIMARY KEY, a INT, b UNIQUE);")
 ---
-- error: keyword "UNIQUE" is reserved
+- error: Keyword 'UNIQUE' is reserved. Please use double quotes if 'UNIQUE' is an
+    identifier.
 ...
 -- gh-3104: real type is stored in space format.
 --
-- 
2.7.4





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