[tarantool-patches] [PATCH v3 2/6] sql: fix "PRAGMA parser_trace" result

imeevma at tarantool.org imeevma at tarantool.org
Wed Dec 26 21:18:12 MSK 2018


Hi! Thank you for review! My answers, diff between versions and
new version below.


On 12/24/18 5:01 PM, n.pettik wrote:
> Why is this patch part of #3832?
> Couldn’t you implement #3832 without this patch?
Removed this from commit-message.

> Why can’t you simply set to this pragma type ‘flag’?
> It works almost that way.
Done.

> Let's avoid using ’sqlite’ prefix in any added code. 
Fixed.

> Personally I'd rather create new test file for this (debug) purpose.
> Also, your test doesn’t check value which has been set (it checks
> only that it is bool):
>
> Pragma parser_trace=1
> pragma parser_trace — this must return 1, not 0.
Done. I created new test file.


Diff between versions:

commit 4b1229191fbf15fd9d0d9bb178e8ab8de2c3280f
Author: Mergen Imeev <imeevma at gmail.com>
Date:   Tue Dec 25 18:19:35 2018 +0300

    Temporary: review fixes

diff --git a/src/box/sql/pragma.c b/src/box/sql/pragma.c
index b8edc76..6122986 100644
--- a/src/box/sql/pragma.c
+++ b/src/box/sql/pragma.c
@@ -466,33 +466,31 @@ sqlite3Pragma(Parse * pParse, Token * pId,	/* First part of [schema.]id field */
 	switch (pPragma->ePragTyp) {
 
 	case PragTyp_FLAG:{
-			if (zRight == 0) {
-				setPragmaResultColumnNames(v, pPragma);
-				returnSingleInt(v,
-						(user_session->
-						 sql_flags & pPragma->iArg) !=
-						0);
-			} else {
-				int mask = pPragma->iArg;	/* Mask of bits to set
-								 * or clear.
-								 */
-
-				if (sqlite3GetBoolean(zRight, 0)) {
-					user_session->sql_flags |= mask;
-				} else {
-					user_session->sql_flags &= ~mask;
-				}
-
-				/* Many of the flag-pragmas modify the code
-				 * generated by the SQL * compiler (eg.
-				 * count_changes). So add an opcode to expire
-				 * all * compiled SQL statements after
-				 * modifying a pragma value.
-				 */
-				sqlite3VdbeAddOp0(v, OP_Expire);
+		if (zRight == 0) {
+			setPragmaResultColumnNames(v, pPragma);
+			returnSingleInt(v, (user_session->sql_flags &
+					    pPragma->iArg) != 0);
+		} else {
+			int mask = pPragma->iArg;	/* Mask of bits to set
+							 * or clear.
+							 */
+			bool is_value_true = sqlite3GetBoolean(zRight, 0);
+
+			if (is_value_true)
+				user_session->sql_flags |= mask;
+			else
+				user_session->sql_flags &= ~mask;
+#ifndef NDEBUG
+			if (mask == PARSER_TRACE_FLAG) {
+				if (is_value_true)
+					sqlite3ParserTrace(stdout, "parser: ");
+				else
+					sqlite3ParserTrace(0, 0);
 			}
-			break;
+#endif
 		}
+		break;
+	}
 
 	case PragTyp_TABLE_INFO:
 		sql_pragma_table_info(pParse, zRight);
@@ -569,24 +567,6 @@ sqlite3Pragma(Parse * pParse, Token * pId,	/* First part of [schema.]id field */
 		}
 		break;
 	}
-#ifndef NDEBUG
-	case PragTyp_PARSER_TRACE:{
-		int mask = pPragma->iArg;
-		if (zRight == NULL) {
-			returnSingleInt(v,
-					(user_session->sql_flags & mask) != 0);
-		} else {
-			if (sqlite3GetBoolean(zRight, 0)) {
-				sqlite3ParserTrace(stdout, "parser: ");
-				user_session->sql_flags |= mask;
-			} else {
-				sqlite3ParserTrace(0, 0);
-				user_session->sql_flags &= ~mask;
-			}
-		}
-		break;
-	}
-#endif
 
 		/*
 		 * Reinstall the LIKE and functions. The variant
diff --git a/src/box/sql/pragma.h b/src/box/sql/pragma.h
index 59e0e1e..ae8e030 100644
--- a/src/box/sql/pragma.h
+++ b/src/box/sql/pragma.h
@@ -14,7 +14,6 @@
 #define PragTyp_INDEX_LIST                    11
 #define PragTyp_STATS                         15
 #define PragTyp_TABLE_INFO                    17
-#define PragTyp_PARSER_TRACE                  24
 #define PragTyp_DEFAULT_ENGINE                25
 #define PragTyp_COMPOUND_SELECT_LIMIT         26
 
@@ -137,10 +136,10 @@ static const PragmaName aPragmaName[] = {
 	 /* iArg:      */ 0},
 #if defined(SQLITE_DEBUG)
 	{ /* zName:     */ "parser_trace",
-	 /* ePragTyp:  */ PragTyp_PARSER_TRACE,
+	 /* ePragTyp:  */ PragTyp_FLAG,
 	 /* ePragFlg:  */ PragFlg_Result0 | PragFlg_NoColumns1,
 	 /* ColNames:  */ 0, 0,
-	 /* iArg:      */ SQLITE_ParserTrace},
+	 /* iArg:      */ PARSER_TRACE_FLAG},
 #endif
 	{ /* zName:     */ "query_only",
 	 /* ePragTyp:  */ PragTyp_FLAG,
diff --git a/src/box/sql/sqliteInt.h b/src/box/sql/sqliteInt.h
index 212f75a..a484486 100644
--- a/src/box/sql/sqliteInt.h
+++ b/src/box/sql/sqliteInt.h
@@ -1564,7 +1564,7 @@ struct sqlite3 {
  */
 #define SQLITE_VdbeTrace      0x00000001	/* True to trace VDBE execution */
 /* Debug print info about SQL query as it parsed */
-#define SQLITE_ParserTrace    0x00000002
+#define PARSER_TRACE_FLAG     0x00000002
 #define SQLITE_FullColNames   0x00000004	/* Show full column names on SELECT */
 #define SQLITE_ShortColNames  0x00000040	/* Show short columns names */
 #define SQLITE_CountRows      0x00000080	/* Count rows changed by INSERT, */
diff --git a/test/sql/errinj.result b/test/sql/errinj.result
index 6ba7e72..cb993f8 100644
--- a/test/sql/errinj.result
+++ b/test/sql/errinj.result
@@ -280,22 +280,3 @@ errinj.set("ERRINJ_WAL_IO", false)
 box.sql.execute("DROP TABLE t3;")
 ---
 ...
---
--- gh-3832: Some statements do not return column type
--- This test placed here because it should be skipped in release
--- build.
--- Check that "PRAGMA parser_trace" returns 0 or 1 if called
--- without parameter.
-result = box.sql.execute('PRAGMA parser_trace')
----
-...
--- Should be TRUE.
-result[1][1] == 0 or result[1][1] == 1
----
-- true
-...
--- Check that "PRAGMA parser_trace" returns nothing if called
--- with parameter.
-box.sql.execute('PRAGMA parser_trace = '.. result[1][1])
----
-...
diff --git a/test/sql/errinj.test.lua b/test/sql/errinj.test.lua
index a938eda..fa7f9f2 100644
--- a/test/sql/errinj.test.lua
+++ b/test/sql/errinj.test.lua
@@ -97,19 +97,3 @@ box.sql.execute("ALTER TABLE t3 DROP CONSTRAINT fk1;")
 box.sql.execute("INSERT INTO t3 VALUES(1, 1, 3);")
 errinj.set("ERRINJ_WAL_IO", false)
 box.sql.execute("DROP TABLE t3;")
-
---
--- gh-3832: Some statements do not return column type
-
--- This test placed here because it should be skipped in release
--- build.
-
--- Check that "PRAGMA parser_trace" returns 0 or 1 if called
--- without parameter.
-result = box.sql.execute('PRAGMA parser_trace')
--- Should be TRUE.
-result[1][1] == 0 or result[1][1] == 1
-
--- Check that "PRAGMA parser_trace" returns nothing if called
--- with parameter.
-box.sql.execute('PRAGMA parser_trace = '.. result[1][1])
diff --git a/test/sql/sql-debug.result b/test/sql/sql-debug.result
new file mode 100644
index 0000000..692fa82
--- /dev/null
+++ b/test/sql/sql-debug.result
@@ -0,0 +1,32 @@
+remote = require('net.box')
+---
+...
+test_run = require('test_run').new()
+---
+...
+engine = test_run:get_cfg('engine')
+---
+...
+box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
+---
+...
+--
+-- gh-3832: Some statements do not return column type
+-- Check that "PRAGMA parser_trace" returns 0 or 1 if called
+-- without parameter.
+result = box.sql.execute('PRAGMA parser_trace')
+---
+...
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = 1')
+---
+...
+-- Should be 1.
+box.sql.execute('PRAGMA parser_trace')
+---
+- - [1]
+...
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = '.. result[1][1])
+---
+...
diff --git a/test/sql/sql-debug.test.lua b/test/sql/sql-debug.test.lua
new file mode 100644
index 0000000..66f47b3
--- /dev/null
+++ b/test/sql/sql-debug.test.lua
@@ -0,0 +1,17 @@
+remote = require('net.box')
+test_run = require('test_run').new()
+engine = test_run:get_cfg('engine')
+box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
+
+--
+-- gh-3832: Some statements do not return column type
+
+-- Check that "PRAGMA parser_trace" returns 0 or 1 if called
+-- without parameter.
+result = box.sql.execute('PRAGMA parser_trace')
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = 1')
+-- Should be 1.
+box.sql.execute('PRAGMA parser_trace')
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = '.. result[1][1])
diff --git a/test/sql/suite.ini b/test/sql/suite.ini
index 4504731..ce6ccb7 100644
--- a/test/sql/suite.ini
+++ b/test/sql/suite.ini
@@ -6,4 +6,4 @@ use_unix_sockets = True
 config = engine.cfg
 is_parallel = True
 lua_libs = lua/sql_tokenizer.lua
-release_disabled = errinj.test.lua view_delayed_wal.test.lua
+release_disabled = errinj.test.lua view_delayed_wal.test.lua sql-debug.test.lua


New version:

commit efa1434cc4186a026f416f7506319f89009fd029
Author: Mergen Imeev <imeevma at gmail.com>
Date:   Wed Dec 12 22:16:33 2018 +0300

    sql: fix "PRAGMA parser_trace" result
    
    Currently PRAGMA parser_trace returns an empty table. This seems
    wrong, since other similar pragmas return their status. Fixed in
    the current patch.

diff --git a/src/box/sql/pragma.c b/src/box/sql/pragma.c
index 5729fe6..6122986 100644
--- a/src/box/sql/pragma.c
+++ b/src/box/sql/pragma.c
@@ -466,33 +466,31 @@ sqlite3Pragma(Parse * pParse, Token * pId,	/* First part of [schema.]id field */
 	switch (pPragma->ePragTyp) {
 
 	case PragTyp_FLAG:{
-			if (zRight == 0) {
-				setPragmaResultColumnNames(v, pPragma);
-				returnSingleInt(v,
-						(user_session->
-						 sql_flags & pPragma->iArg) !=
-						0);
-			} else {
-				int mask = pPragma->iArg;	/* Mask of bits to set
-								 * or clear.
-								 */
-
-				if (sqlite3GetBoolean(zRight, 0)) {
-					user_session->sql_flags |= mask;
-				} else {
-					user_session->sql_flags &= ~mask;
-				}
-
-				/* Many of the flag-pragmas modify the code
-				 * generated by the SQL * compiler (eg.
-				 * count_changes). So add an opcode to expire
-				 * all * compiled SQL statements after
-				 * modifying a pragma value.
-				 */
-				sqlite3VdbeAddOp0(v, OP_Expire);
+		if (zRight == 0) {
+			setPragmaResultColumnNames(v, pPragma);
+			returnSingleInt(v, (user_session->sql_flags &
+					    pPragma->iArg) != 0);
+		} else {
+			int mask = pPragma->iArg;	/* Mask of bits to set
+							 * or clear.
+							 */
+			bool is_value_true = sqlite3GetBoolean(zRight, 0);
+
+			if (is_value_true)
+				user_session->sql_flags |= mask;
+			else
+				user_session->sql_flags &= ~mask;
+#ifndef NDEBUG
+			if (mask == PARSER_TRACE_FLAG) {
+				if (is_value_true)
+					sqlite3ParserTrace(stdout, "parser: ");
+				else
+					sqlite3ParserTrace(0, 0);
 			}
-			break;
+#endif
 		}
+		break;
+	}
 
 	case PragTyp_TABLE_INFO:
 		sql_pragma_table_info(pParse, zRight);
@@ -569,18 +567,6 @@ sqlite3Pragma(Parse * pParse, Token * pId,	/* First part of [schema.]id field */
 		}
 		break;
 	}
-#ifndef NDEBUG
-	case PragTyp_PARSER_TRACE:{
-			if (zRight) {
-				if (sqlite3GetBoolean(zRight, 0)) {
-					sqlite3ParserTrace(stdout, "parser: ");
-				} else {
-					sqlite3ParserTrace(0, 0);
-				}
-			}
-			break;
-		}
-#endif
 
 		/*
 		 * Reinstall the LIKE and functions. The variant
diff --git a/src/box/sql/pragma.h b/src/box/sql/pragma.h
index 84ab478..ae8e030 100644
--- a/src/box/sql/pragma.h
+++ b/src/box/sql/pragma.h
@@ -14,7 +14,6 @@
 #define PragTyp_INDEX_LIST                    11
 #define PragTyp_STATS                         15
 #define PragTyp_TABLE_INFO                    17
-#define PragTyp_PARSER_TRACE                  24
 #define PragTyp_DEFAULT_ENGINE                25
 #define PragTyp_COMPOUND_SELECT_LIMIT         26
 
@@ -137,10 +136,10 @@ static const PragmaName aPragmaName[] = {
 	 /* iArg:      */ 0},
 #if defined(SQLITE_DEBUG)
 	{ /* zName:     */ "parser_trace",
-	 /* ePragTyp:  */ PragTyp_PARSER_TRACE,
-	 /* ePragFlg:  */ 0,
+	 /* ePragTyp:  */ PragTyp_FLAG,
+	 /* ePragFlg:  */ PragFlg_Result0 | PragFlg_NoColumns1,
 	 /* ColNames:  */ 0, 0,
-	 /* iArg:      */ 0},
+	 /* iArg:      */ PARSER_TRACE_FLAG},
 #endif
 	{ /* zName:     */ "query_only",
 	 /* ePragTyp:  */ PragTyp_FLAG,
diff --git a/src/box/sql/sqliteInt.h b/src/box/sql/sqliteInt.h
index 4110a59..a484486 100644
--- a/src/box/sql/sqliteInt.h
+++ b/src/box/sql/sqliteInt.h
@@ -1563,6 +1563,8 @@ struct sqlite3 {
  * Possible values for the sqlite3.flags.
  */
 #define SQLITE_VdbeTrace      0x00000001	/* True to trace VDBE execution */
+/* Debug print info about SQL query as it parsed */
+#define PARSER_TRACE_FLAG     0x00000002
 #define SQLITE_FullColNames   0x00000004	/* Show full column names on SELECT */
 #define SQLITE_ShortColNames  0x00000040	/* Show short columns names */
 #define SQLITE_CountRows      0x00000080	/* Count rows changed by INSERT, */
diff --git a/test/sql/sql-debug.result b/test/sql/sql-debug.result
new file mode 100644
index 0000000..692fa82
--- /dev/null
+++ b/test/sql/sql-debug.result
@@ -0,0 +1,32 @@
+remote = require('net.box')
+---
+...
+test_run = require('test_run').new()
+---
+...
+engine = test_run:get_cfg('engine')
+---
+...
+box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
+---
+...
+--
+-- gh-3832: Some statements do not return column type
+-- Check that "PRAGMA parser_trace" returns 0 or 1 if called
+-- without parameter.
+result = box.sql.execute('PRAGMA parser_trace')
+---
+...
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = 1')
+---
+...
+-- Should be 1.
+box.sql.execute('PRAGMA parser_trace')
+---
+- - [1]
+...
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = '.. result[1][1])
+---
+...
diff --git a/test/sql/sql-debug.test.lua b/test/sql/sql-debug.test.lua
new file mode 100644
index 0000000..66f47b3
--- /dev/null
+++ b/test/sql/sql-debug.test.lua
@@ -0,0 +1,17 @@
+remote = require('net.box')
+test_run = require('test_run').new()
+engine = test_run:get_cfg('engine')
+box.sql.execute('pragma sql_default_engine=\''..engine..'\'')
+
+--
+-- gh-3832: Some statements do not return column type
+
+-- Check that "PRAGMA parser_trace" returns 0 or 1 if called
+-- without parameter.
+result = box.sql.execute('PRAGMA parser_trace')
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = 1')
+-- Should be 1.
+box.sql.execute('PRAGMA parser_trace')
+-- Should be nothing.
+box.sql.execute('PRAGMA parser_trace = '.. result[1][1])
diff --git a/test/sql/suite.ini b/test/sql/suite.ini
index 4504731..ce6ccb7 100644
--- a/test/sql/suite.ini
+++ b/test/sql/suite.ini
@@ -6,4 +6,4 @@ use_unix_sockets = True
 config = engine.cfg
 is_parallel = True
 lua_libs = lua/sql_tokenizer.lua
-release_disabled = errinj.test.lua view_delayed_wal.test.lua
+release_disabled = errinj.test.lua view_delayed_wal.test.lua sql-debug.test.lua
-- 
2.7.4





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