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Remove FORCE_INIT_OF_VARS when compiling for valgrind/purify to spot wrong LINT_INIT() options

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Fixed bug in ALTER TABLE ... MODIFY integer-column
Added ref_or_null optimization (needed for subqueries)
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monty@mashka.mysql.fi
2003-06-30 13:23:54 +03:00
parent 01c2c0c326
commit dbebed97e4
10 changed files with 500 additions and 270 deletions
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6
mysql-test/r/distinct.result
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@@ -173,9 +173,9 @@ INSERT INTO t2 values (1),(2),(3);
INSERT INTO t3 VALUES (1,'1'),(2,'2'),(1,'1'),(2,'2');
explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t3 index a a 5 NULL 6 Using index; Using temporary
1 SIMPLE t2 index a a 4 NULL 5 Using index; Distinct
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Distinct
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 2 Using temporary
1 SIMPLE t2 ref a a 4 test.t1.a 2 Using index
1 SIMPLE t3 ref a a 5 test.t1.b 2 Using where; Using index
SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
a
1