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365ba070fe
- Adopt MySQL's fix: don't run index_merge optimizer if the table statistics reports that the table has 0 rows.
30 lines
762 B
Text
30 lines
762 B
Text
#
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# Tests for the BLACKHOLE storage engine
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#
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--source include/have_blackhole.inc
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--echo #
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--echo # Bug #11880012: INDEX_SUBQUERY, BLACKHOLE,
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--echo # HANG IN PREPARING WITH 100% CPU USAGE
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--echo #
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CREATE TABLE t1(a INT NOT NULL);
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INSERT INTO t1 VALUES (1), (2), (3);
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CREATE TABLE t2 (a INT UNSIGNED, b INT, UNIQUE KEY (a, b)) ENGINE=BLACKHOLE;
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SELECT 1 FROM t1 WHERE a = ANY (SELECT a FROM t2);
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DROP TABLE t1, t2;
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--echo End of 5.5 tests
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--echo #
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--echo # Bug#13948247 DIVISION BY 0 IN GET_BEST_DISJUNCT_QUICK WITH FORCE INDEX GROUP BY
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--echo #
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CREATE TABLE t1(a INT, b INT, c INT, KEY(c), UNIQUE(a)) ENGINE = BLACKHOLE;
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SELECT 0 FROM t1 FORCE INDEX FOR GROUP BY(a) WHERE a = 0 OR b = 0 AND c = 0;
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DROP TABLE t1;
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--echo End of 5.6 tests
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