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Code Activity

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)


BUILD/compile-pentium-valgrind-max:
  Remove FORCE_INIT_OF_VARS to spot wrong LINT_INIT() options
mysql-test/r/distinct.result:
  Update of test results (new optimizer)
mysql-test/r/null_key.result:
  Update after ref_or_null optimization
mysql-test/r/subselect.result:
  Update after ref_or_null optimization
mysql-test/t/null_key.test:
  New tests for ref_or_null optimization
sql/sql_select.cc:
  Added ref_or_null optimization
  Optimized find_best_combinations() and read-functions
sql/sql_select.h:
  Added ref_or_null optimization
sql/sql_yacc.yy:
  Fixed bug in ALTER TABLE ... MODIFY integer-column
sql/table.cc:
  Safety fix for ALTER TABLE .. MODIFY
sql/unireg.cc:
  Safety fix for ALTER TABLE .. MODIFY
This commit is contained in:
unknown
2003-06-30 13:23:54 +03:00
parent 27205cc64b
commit d0dc9e7db3
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