[tarantool-patches] Re: [PATCH v1 18/28] sql: remove SQL_CONSTRAINT errcode

Mergen Imeev imeevma at tarantool.org
Wed Jun 19 11:02:49 MSK 2019


Thank you for review! My answer, diff and new patch below.

On Tue, Jun 18, 2019 at 10:40:04PM +0200, Vladislav Shpilevoy wrote:
> Hi! Thanks for the patch!
> 
> On 15/06/2019 12:00, Mergen Imeev wrote:
> > On Fri, Jun 14, 2019 at 12:24:55AM +0200, Vladislav Shpilevoy wrote:
> >> Thanks for the patch!
> >>
> >> I've found 'sql_CONSTRAINT_UNIQUE' in sql-tap/unique.test.lua
> 
> It is still here. Please, fix.
> 
Sorry, missed this. Fixed.

Diff:

diff --git a/test/sql-tap/unique.test.lua b/test/sql-tap/unique.test.lua
index 358a06f..9818f90 100755
--- a/test/sql-tap/unique.test.lua
+++ b/test/sql-tap/unique.test.lua
@@ -1,6 +1,6 @@
 #!/usr/bin/env tarantool
 test = require("sqltester")
-test:plan(32)
+test:plan(35)
 
 --!./tcltestrunner.lua
 -- 2001 September 27
@@ -20,12 +20,7 @@ test:plan(32)
 -- $Id: unique.test,v 1.9 2009/05/02 15:46:47 drh Exp $
 -- ["set","testdir",[["file","dirname",["argv0"]]]]
 -- ["source",[["testdir"],"\/tester.tcl"]]
--- MUST_WORK_TEST
-if (0 > 0)
- then
-    -- Try to create a table with two primary keys.
-    -- (This is allowed in sql even that it is not valid SQL)
-end
+
 test:do_catchsql_test(
     "unique-1.1",
     [[
@@ -213,20 +208,16 @@ test:do_catchsql_test(
         -- </unique-2.7>
     })
 
--- MUST_WORK_TEST i2 is checking not only "a" column #2495
-if 0 > 0 then
 test:do_catchsql_test(
     "unique-2.8",
     [[
-        select a from t2;
-        --CREATE UNIQUE INDEX i2 ON t2(a);
+        CREATE UNIQUE INDEX i2 ON t2(a);
     ]], {
         -- <unique-2.8>
-        1, "UNIQUE constraint failed: t2.a"
+        1, "Duplicate key exists in unique index 'I2' in space 'T2'"
         -- </unique-2.8>
     })
 
--- verify_ex_errcode unique-2.8b sql_CONSTRAINT_UNIQUE
 test:do_catchsql_test(
     "unique-2.9",
     [[
@@ -236,7 +227,6 @@ test:do_catchsql_test(
         0
         -- </unique-2.9>
     })
-end
 
 --integrity_check unique-2.10
 -- Test the UNIQUE keyword as used on two or more fields.
@@ -391,18 +381,15 @@ test:do_catchsql_test(
         -- </unique-4.9>
     })
 
--- MUST_WORK_TEST i4c is checking not only "b" column #2495
-if 0 > 0 then
 test:do_catchsql_test(
     "unique-4.10",
     [[
         CREATE UNIQUE INDEX i4c ON t4(b)
     ]], {
         -- <unique-4.10>
-        1, "UNIQUE constraint failed: t4.b"
+        1, "Duplicate key exists in unique index 'I4C' in space 'T4'"
         -- </unique-4.10>
     })
-end
 
 --integrity_check unique-4.99
 -- Test the error message generation logic.  In particular, make sure we
diff --git a/test/sql-tap/index4.test.lua b/test/sql-tap/index4.test.lua
index d8c6bab..37c0569 100755
--- a/test/sql-tap/index4.test.lua
+++ b/test/sql-tap/index4.test.lua
@@ -1,6 +1,6 @@
 #!/usr/bin/env tarantool
 test = require("sqltester")
-test:plan(6)
+test:plan(7)
 
 --!./tcltestrunner.lua
 -- 2011 July 9
@@ -150,20 +150,15 @@ test:do_execsql_test(
         COMMIT;
     ]])
 
--- MUST_WORK_TEST possible reason of failing #2495
-if (0 > 0)
- then
-    test:do_catchsql_test(
-        2.2,
-        [[
-            CREATE UNIQUE INDEX i3 ON t2(x);
-        ]], {
-            -- <2.2>
-            1, "UNIQUE constraint failed: t2.x"
-            -- </2.2>
-        })
-
-end
+test:do_catchsql_test(
+    2.2,
+    [[
+        CREATE UNIQUE INDEX i3 ON t2(x);
+    ]], {
+        -- <2.2>
+        1, "Duplicate key exists in unique index 'I3' in space 'T2'"
+        -- </2.2>
+    })
 
 
 test:finish_test()


New patch:

>From 8394c34eab7f945ce3d18bb80027a2f5c195328f Mon Sep 17 00:00:00 2001
Date: Wed, 22 May 2019 17:42:11 +0300
Subject: [PATCH] sql: remove SQL_CONSTRAINT errcode

Removing this error code is part of getting rid of the SQL error
system.

diff --git a/src/box/sql/fk_constraint.c b/src/box/sql/fk_constraint.c
index 08e7f62..6cb41f8 100644
--- a/src/box/sql/fk_constraint.c
+++ b/src/box/sql/fk_constraint.c
@@ -44,7 +44,7 @@
  *
  * Foreign keys in sql come in two flavours: deferred and immediate.
  * If an immediate foreign key constraint is violated,
- * SQL_CONSTRAINT_FOREIGNKEY is returned and the current
+ * -1 is returned and the current
  * statement transaction rolled back. If a
  * deferred foreign key constraint is violated, no action is taken
  * immediately. However if the application attempts to commit the
@@ -110,7 +110,7 @@
  * is that the counter used is stored as part of each individual statement
  * object (struct Vdbe). If, after the statement has run, its immediate
  * constraint counter is greater than zero,
- * it returns SQL_CONSTRAINT_FOREIGNKEY
+ * it returns -1.
  * and the statement transaction is rolled back. An exception is an INSERT
  * statement that inserts a single row only (no triggers). In this case,
  * instead of using a counter, an exception is thrown immediately if the
diff --git a/src/box/sql/sqlInt.h b/src/box/sql/sqlInt.h
index 4af65b0..f9f19bf 100644
--- a/src/box/sql/sqlInt.h
+++ b/src/box/sql/sqlInt.h
@@ -332,7 +332,6 @@ enum sql_ret_code {
 	/** Some kind of disk I/O error occurred. */
 	SQL_IOERR,
 	/** Abort due to constraint violation. */
-	SQL_CONSTRAINT,
 	SQL_TARANTOOL_ERROR,
 	/** sql_step() has another row ready. */
 	SQL_ROW,
@@ -554,9 +553,6 @@ sql_exec(sql *,	/* An open database */
 #define SQL_IOERR_CLOSE             (SQL_IOERR | (16<<8))
 #define SQL_IOERR_DELETE_NOENT      (SQL_IOERR | (23<<8))
 #define SQL_IOERR_GETTEMPPATH       (SQL_IOERR | (25<<8))
-#define SQL_CONSTRAINT_FOREIGNKEY   (SQL_CONSTRAINT | (3<<8))
-#define SQL_CONSTRAINT_NOTNULL      (SQL_CONSTRAINT | (5<<8))
-#define SQL_CONSTRAINT_TRIGGER      (SQL_CONSTRAINT | (7<<8))
 
 /**
  * Subtype of a main type. Allows to do some subtype specific
@@ -3520,17 +3516,16 @@ sql_generate_index_key(struct Parse *parse, struct index *index, int cursor,
  * ----------  ----------  --------------------------------------
  *    any       ROLLBACK   The current transaction is rolled
  *                         back and VDBE stops immediately
- *                         with return code of sql_CONSTRAINT.
+ *                         with an error.
  *
  *    any        ABORT     Back out changes from the current
  *                         command only (do not do a complete
  *                         rollback) then cause VDBE to return
- *                         immediately with sql_CONSTRAINT.
+ *                         immediately with an error.
  *
- *    any        FAIL      VDBE returns immediately with a
- *                         return code of sql_CONSTRAINT. The
- *                         transaction is not rolled back and any
- *                         changes to prior rows are retained.
+ *    any        FAIL      VDBE returns immediately with an error.
+ *                         The transaction is not rolled back and
+ *                         any changes to prior rows are retained.
  *
  *    any       IGNORE     The attempt in insert or update the
  *                         current row is skipped, without
diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index 918e73c..878724b 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -1065,7 +1065,6 @@ case OP_Halt: {
 	}
 	rc = sqlVdbeHalt(p);
 	assert(rc == 0 || rc == SQL_ERROR);
-	assert(rc == 0 || (p->rc & 0xff) == SQL_CONSTRAINT);
 	rc = p->rc ? SQL_TARANTOOL_ERROR : SQL_DONE;
 	goto vdbe_return;
 }
diff --git a/src/box/sql/vdbeaux.c b/src/box/sql/vdbeaux.c
index 2a9e39b..53e9463 100644
--- a/src/box/sql/vdbeaux.c
+++ b/src/box/sql/vdbeaux.c
@@ -2013,8 +2013,7 @@ sqlVdbeCloseStatement(Vdbe * p, int eOp)
  * violations, return SQL_ERROR. Otherwise, 0.
  *
  * If there are outstanding FK violations and this function returns
- * SQL_ERROR, set the result of the VM to SQL_CONSTRAINT_FOREIGNKEY
- * and write an error message to it. Then return SQL_ERROR.
+ * SQL_TARANTOOL_ERROR and set an error.
  */
 int
 sqlVdbeCheckFk(Vdbe * p, int deferred)
@@ -2177,7 +2176,6 @@ sqlVdbeHalt(Vdbe * p)
 						closeCursorsAndFree(p);
 						return SQL_ERROR;
 					}
-					rc = SQL_CONSTRAINT_FOREIGNKEY;
 				} else {
 					/* The auto-commit flag is true, the vdbe program was successful
 					 * or hit an 'OR FAIL' constraint and there are no deferred foreign
@@ -2220,17 +2218,15 @@ sqlVdbeHalt(Vdbe * p)
 		/* If eStatementOp is non-zero, then a statement transaction needs to
 		 * be committed or rolled back. Call sqlVdbeCloseStatement() to
 		 * do so. If this operation returns an error, and the current statement
-		 * error code is 0 or SQL_CONSTRAINT, then promote the
+		 * error code is 0 or -1, then promote the
 		 * current statement error code.
 		 */
 		if (eStatementOp) {
 			rc = sqlVdbeCloseStatement(p, eStatementOp);
 			if (rc) {
 				box_txn_rollback();
-				if (p->rc == 0
-				    || (p->rc & 0xff) == SQL_CONSTRAINT) {
+				if (p->rc == 0)
 					p->rc = rc;
-				}
 				closeCursorsAndFree(p);
 				sqlRollbackAll(p);
 				sqlCloseSavepoints(p);
diff --git a/test/sql-tap/index4.test.lua b/test/sql-tap/index4.test.lua
index d8c6bab..37c0569 100755
--- a/test/sql-tap/index4.test.lua
+++ b/test/sql-tap/index4.test.lua
@@ -1,6 +1,6 @@
 #!/usr/bin/env tarantool
 test = require("sqltester")
-test:plan(6)
+test:plan(7)
 
 --!./tcltestrunner.lua
 -- 2011 July 9
@@ -150,20 +150,15 @@ test:do_execsql_test(
         COMMIT;
     ]])
 
--- MUST_WORK_TEST possible reason of failing #2495
-if (0 > 0)
- then
-    test:do_catchsql_test(
-        2.2,
-        [[
-            CREATE UNIQUE INDEX i3 ON t2(x);
-        ]], {
-            -- <2.2>
-            1, "UNIQUE constraint failed: t2.x"
-            -- </2.2>
-        })
-
-end
+test:do_catchsql_test(
+    2.2,
+    [[
+        CREATE UNIQUE INDEX i3 ON t2(x);
+    ]], {
+        -- <2.2>
+        1, "Duplicate key exists in unique index 'I3' in space 'T2'"
+        -- </2.2>
+    })
 
 
 test:finish_test()
diff --git a/test/sql-tap/trigger1.test.lua b/test/sql-tap/trigger1.test.lua
index 38d7c55..bc02d62 100755
--- a/test/sql-tap/trigger1.test.lua
+++ b/test/sql-tap/trigger1.test.lua
@@ -511,7 +511,7 @@ test:do_catchsql_test(
         -- </trigger1-6.3>
     })
 
--- verify_ex_errcode trigger1-6.3b sql_CONSTRAINT_TRIGGER
+-- Verify the previous test has not deleted anything.
 test:do_execsql_test(
     "trigger1-6.4",
     [[
diff --git a/test/sql-tap/unique.test.lua b/test/sql-tap/unique.test.lua
index fbd73a6..9818f90 100755
--- a/test/sql-tap/unique.test.lua
+++ b/test/sql-tap/unique.test.lua
@@ -1,6 +1,6 @@
 #!/usr/bin/env tarantool
 test = require("sqltester")
-test:plan(32)
+test:plan(35)
 
 --!./tcltestrunner.lua
 -- 2001 September 27
@@ -20,12 +20,7 @@ test:plan(32)
 -- $Id: unique.test,v 1.9 2009/05/02 15:46:47 drh Exp $
 -- ["set","testdir",[["file","dirname",["argv0"]]]]
 -- ["source",[["testdir"],"\/tester.tcl"]]
--- MUST_WORK_TEST
-if (0 > 0)
- then
-    -- Try to create a table with two primary keys.
-    -- (This is allowed in sql even that it is not valid SQL)
-end
+
 test:do_catchsql_test(
     "unique-1.1",
     [[
@@ -74,7 +69,7 @@ test:do_catchsql_test(
         -- </unique-1.3>
     })
 
--- verify_ex_errcode unique-1.3b sql_CONSTRAINT_PRIMARYKEY
+-- Verify the previous test has not inserted anything.
 test:do_execsql_test(
     "unique-1.4",
     [[
@@ -95,7 +90,7 @@ test:do_catchsql_test(
         -- </unique-1.5>
     })
 
--- verify_ex_errcode unique-1.5b sql_CONSTRAINT_UNIQUE
+-- Verify the previous test has not inserted anything.
 test:do_execsql_test(
     "unique-1.6",
     [[
@@ -171,7 +166,7 @@ test:do_catchsql_test(
         -- </unique-2.3>
     })
 
--- verify_ex_errcode unique-2.3b sql_CONSTRAINT_UNIQUE
+-- Verify the previous test has not inserted anything.
 test:do_catchsql_test(
     "unique-2.4",
     [[
@@ -213,20 +208,16 @@ test:do_catchsql_test(
         -- </unique-2.7>
     })
 
--- MUST_WORK_TEST i2 is checking not only "a" column #2495
-if 0 > 0 then
 test:do_catchsql_test(
     "unique-2.8",
     [[
-        select a from t2;
-        --CREATE UNIQUE INDEX i2 ON t2(a);
+        CREATE UNIQUE INDEX i2 ON t2(a);
     ]], {
         -- <unique-2.8>
-        1, "UNIQUE constraint failed: t2.a"
+        1, "Duplicate key exists in unique index 'I2' in space 'T2'"
         -- </unique-2.8>
     })
 
--- verify_ex_errcode unique-2.8b sql_CONSTRAINT_UNIQUE
 test:do_catchsql_test(
     "unique-2.9",
     [[
@@ -236,7 +227,6 @@ test:do_catchsql_test(
         0
         -- </unique-2.9>
     })
-end
 
 --integrity_check unique-2.10
 -- Test the UNIQUE keyword as used on two or more fields.
@@ -291,7 +281,6 @@ test:do_catchsql_test(
         -- </unique-3.4>
     })
 
--- verify_ex_errcode unique-3.4b sql_CONSTRAINT_UNIQUE
 --integrity_check unique-3.5
 -- Make sure NULLs are distinct as far as the UNIQUE tests are
 -- concerned.
@@ -392,20 +381,16 @@ test:do_catchsql_test(
         -- </unique-4.9>
     })
 
--- MUST_WORK_TEST i4c is checking not only "b" column #2495
-if 0 > 0 then
 test:do_catchsql_test(
     "unique-4.10",
     [[
         CREATE UNIQUE INDEX i4c ON t4(b)
     ]], {
         -- <unique-4.10>
-        1, "UNIQUE constraint failed: t4.b"
+        1, "Duplicate key exists in unique index 'I4C' in space 'T4'"
         -- </unique-4.10>
     })
-end
 
--- verify_ex_errcode unique-4.10b sql_CONSTRAINT_UNIQUE
 --integrity_check unique-4.99
 -- Test the error message generation logic.  In particular, make sure we
 -- do not overflow the static buffer used to generate the error message.
@@ -448,7 +433,4 @@ test:do_catchsql_test(
         -- </unique-5.2>
     })
 
--- verify_ex_errcode unique-5.2b sql_CONSTRAINT_UNIQUE
-
-
 test:finish_test()





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