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19 lines
631 B
Text
19 lines
631 B
Text
# Test for BUG#43249 "Innodb returns zero time for the time column
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# with <=> NULL order by limit"
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--source include/have_debug.inc
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--source include/have_innodb.inc
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SET @saved_dbug = @@SESSION.debug_dbug;
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set session debug_dbug="+d,optimizer_innodb_icp";
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CREATE TABLE t1(c1 TIME NOT NULL, c2 TIME NULL, c3 DATE, PRIMARY
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KEY(c1), UNIQUE INDEX(c2)) engine=innodb;
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INSERT INTO t1 VALUES('8:29:45',NULL,'2009-02-01');
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# first time, good results:
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SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c2 LIMIT 2;
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# second time, bad results:
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SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c2 LIMIT 2;
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drop table `t1`;
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SET debug_dbug= @saved_dbug;
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