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44 lines
1 KiB
Text
44 lines
1 KiB
Text
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#
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# Test of update statement that uses many tables.
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#
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--disable_warnings
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DROP TABLE IF EXISTS t1,t2;
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--enable_warnings
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#
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# Bug#1820 Rows not deleted from second table on multi-table delete
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#
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CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL) ;
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--echo # The protocolling of many inserts into t1 is suppressed.
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--disable_query_log
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INSERT INTO t1 VALUES (1,1),(2,2),(3,3),(4,4);
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let $1=19;
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set @d=4;
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while ($1)
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{
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eval INSERT INTO t1 SELECT a+@d,b+@d FROM t1;
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eval SET @d=@d*2;
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dec $1;
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}
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--enable_query_log
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ALTER TABLE t1 ADD INDEX i1(a);
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DELETE FROM t1 WHERE a > 2000000;
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CREATE TABLE t2 LIKE t1;
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INSERT INTO t2 SELECT * FROM t1;
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SELECT 't2 rows before small delete', COUNT(*) FROM t1;
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DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 2;
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SELECT 't2 rows after small delete', COUNT(*) FROM t2;
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SELECT 't1 rows after small delete', COUNT(*) FROM t1;
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## Try deleting many rows
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DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 100*1000;
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SELECT 't2 rows after big delete', COUNT(*) FROM t2;
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SELECT 't1 rows after big delete', COUNT(*) FROM t1;
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DROP TABLE t1,t2;
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