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Bug #46680: Assertion failed in file item_subselect.cc, line 305 crashing on HAVING subquery
- Backport the testcase (the fix itself was included with the subquery optimizations backport)
This commit is contained in:
Sergey Petrunya
@ -1725,3 +1725,154 @@ m
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DROP TABLE t1;
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#
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End of 5.1 tests
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#
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# BUG#46680 - Assertion failed in file item_subselect.cc,
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# line 305 crashing on HAVING subquery
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#
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# Create tables
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#
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CREATE TABLE t1 (
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pk INT,
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v VARCHAR(1) DEFAULT NULL,
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PRIMARY KEY(pk)
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);
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CREATE TABLE t2 LIKE t1;
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CREATE TABLE t3 LIKE t1;
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CREATE TABLE empty1 (a int);
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INSERT INTO t1 VALUES (1,'c'),(2,NULL);
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INSERT INTO t2 VALUES (3,'m'),(4,NULL);
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INSERT INTO t3 VALUES (1,'n');
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#
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# 1) Test that subquery materialization is setup for query with
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# premature optimize() exit due to "Impossible WHERE"
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#
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SELECT MIN(t2.pk)
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FROM t2 JOIN t1 ON t1.pk=t2.pk
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WHERE 'j'
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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MIN(t2.pk)
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NULL
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Warnings:
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Warning 1292 Truncated incorrect INTEGER value: 'j'
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EXPLAIN
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SELECT MIN(t2.pk)
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FROM t2 JOIN t1 ON t1.pk=t2.pk
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WHERE 'j'
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
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2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
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Warnings:
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Warning 1292 Truncated incorrect INTEGER value: 'j'
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#
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# 2) Test that subquery materialization is setup for query with
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# premature optimize() exit due to "No matching min/max row"
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#
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SELECT MIN(t2.pk)
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FROM t2
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WHERE t2.pk>10
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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MIN(t2.pk)
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NULL
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EXPLAIN
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SELECT MIN(t2.pk)
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FROM t2
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WHERE t2.pk>10
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL No matching min/max row
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2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
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#
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# 3) Test that subquery materialization is setup for query with
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# premature optimize() exit due to "Select tables optimized away"
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#
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# NOTE: The result of this query is actually wrong; it should be NULL
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# See BUG#47762. Even so, the test case is still needed to test
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# that the HAVING subquery does not crash the server
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#
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SELECT MIN(pk)
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FROM t1
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WHERE pk=NULL
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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MIN(pk)
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NULL
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EXPLAIN
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SELECT MIN(pk)
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FROM t1
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WHERE pk=NULL
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
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2 SUBQUERY t2 ALL NULL NULL NULL NULL 2
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#
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# 4) Test that subquery materialization is setup for query with
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# premature optimize() exit due to "No matching row in const table"
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#
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SELECT MIN(a)
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FROM (SELECT a FROM empty1) tt
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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MIN(a)
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NULL
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EXPLAIN
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SELECT MIN(a)
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FROM (SELECT a FROM empty1) tt
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
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3 SUBQUERY t2 ALL NULL NULL NULL NULL 2
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2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
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#
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# 5) Test that subquery materialization is setup for query with
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# premature optimize() exit due to "Impossible WHERE noticed
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# after reading const tables"
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#
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SELECT min(t1.pk)
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FROM t1
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WHERE t1.pk IN (SELECT 1 from t3 where pk>10)
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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min(t1.pk)
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NULL
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EXPLAIN
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SELECT min(t1.pk)
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FROM t1
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WHERE t1.pk IN (SELECT 1 from t3 where pk>10)
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
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3 SUBQUERY t2 ALL NULL NULL NULL NULL 2
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#
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# Cleanup for BUG#46680
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#
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DROP TABLE IF EXISTS t1,t2,t3,empty1;
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End of 6.0 tests
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@ -1099,3 +1099,140 @@ DROP TABLE t1;
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--echo #
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--echo End of 5.1 tests
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--echo #
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--echo # BUG#46680 - Assertion failed in file item_subselect.cc,
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--echo # line 305 crashing on HAVING subquery
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--echo #
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--echo # Create tables
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--echo #
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CREATE TABLE t1 (
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pk INT,
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v VARCHAR(1) DEFAULT NULL,
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PRIMARY KEY(pk)
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);
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CREATE TABLE t2 LIKE t1;
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CREATE TABLE t3 LIKE t1;
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CREATE TABLE empty1 (a int);
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INSERT INTO t1 VALUES (1,'c'),(2,NULL);
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INSERT INTO t2 VALUES (3,'m'),(4,NULL);
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INSERT INTO t3 VALUES (1,'n');
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--echo
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--echo #
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--echo # 1) Test that subquery materialization is setup for query with
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--echo # premature optimize() exit due to "Impossible WHERE"
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--echo #
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SELECT MIN(t2.pk)
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FROM t2 JOIN t1 ON t1.pk=t2.pk
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WHERE 'j'
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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EXPLAIN
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SELECT MIN(t2.pk)
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FROM t2 JOIN t1 ON t1.pk=t2.pk
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WHERE 'j'
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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--echo #
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--echo # 2) Test that subquery materialization is setup for query with
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--echo # premature optimize() exit due to "No matching min/max row"
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--echo #
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SELECT MIN(t2.pk)
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FROM t2
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WHERE t2.pk>10
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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EXPLAIN
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SELECT MIN(t2.pk)
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FROM t2
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WHERE t2.pk>10
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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--echo #
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--echo # 3) Test that subquery materialization is setup for query with
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--echo # premature optimize() exit due to "Select tables optimized away"
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--echo #
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--echo # NOTE: The result of this query is actually wrong; it should be NULL
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--echo # See BUG#47762. Even so, the test case is still needed to test
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--echo # that the HAVING subquery does not crash the server
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--echo #
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SELECT MIN(pk)
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FROM t1
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WHERE pk=NULL
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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EXPLAIN
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SELECT MIN(pk)
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FROM t1
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WHERE pk=NULL
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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--echo #
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--echo # 4) Test that subquery materialization is setup for query with
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--echo # premature optimize() exit due to "No matching row in const table"
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--echo #
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--echo
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SELECT MIN(a)
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FROM (SELECT a FROM empty1) tt
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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EXPLAIN
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SELECT MIN(a)
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FROM (SELECT a FROM empty1) tt
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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--echo #
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--echo # 5) Test that subquery materialization is setup for query with
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--echo # premature optimize() exit due to "Impossible WHERE noticed
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--echo # after reading const tables"
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--echo #
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SELECT min(t1.pk)
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FROM t1
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WHERE t1.pk IN (SELECT 1 from t3 where pk>10)
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo
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EXPLAIN
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SELECT min(t1.pk)
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FROM t1
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WHERE t1.pk IN (SELECT 1 from t3 where pk>10)
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HAVING ('m') IN (
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SELECT v
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FROM t2);
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--echo #
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--echo # Cleanup for BUG#46680
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--echo #
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DROP TABLE IF EXISTS t1,t2,t3,empty1;
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###
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--echo End of 6.0 tests
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