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2007-07-31 11:10:03 +05:00
parent 2dc02f2424
commit 210243480c
2 changed files with 43 additions and 0 deletions

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@ -699,6 +699,32 @@ Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 1
DROP TABLE t1;
CREATE TABLE t1 (
f1 int(10) unsigned NOT NULL auto_increment PRIMARY KEY,
f2 varchar(100) NOT NULL default ''
);
CREATE TABLE t2 (
f1 varchar(10) NOT NULL default '',
f2 char(3) NOT NULL default '',
PRIMARY KEY (`f1`),
KEY `k1` (`f2`, `f1`)
);
INSERT INTO t1 values(NULL, '');
INSERT INTO `t2` VALUES ('486878','WDT'),('486910','WDT');
SELECT COUNT(*) FROM t1;
COUNT(*)
1
SELECT min(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
min(t2.f1)
INSERT INTO t1 (f2)
SELECT min(t2.f1) FROM t1, t2 where t2.f2 = 'SIR' GROUP BY t1.f1;
SELECT COUNT(*) FROM t1;
COUNT(*)
1
SELECT * FROM t1;
f1 f2
1
DROP TABLE t1, t2;
CREATE TABLE t1 (x int, y int);
CREATE TABLE t2 (z int, y int);
CREATE TABLE t3 (a int, b int);