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Code Activity

supported possiblity of item substitute (fixed bug) in setup_fields

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more efficient reference creation
fixed table_name of Field in temporary table


mysql-test/r/subselect.result:
  test of 2 references bugs
mysql-test/t/subselect.test:
  test of 2 references bugs
sql/field.h:
  fixed layout
  fixed table name of fields of temporary table (derived table)
sql/item.cc:
  more efficient reference creation
sql/sql_base.cc:
  fixed layout
  supported possiblity of item substitute (fixed bug)
This commit is contained in:
unknown
2002-11-25 01:38:56 +02:00
parent 06e647472f
commit b5b19a7877
5 changed files with 23 additions and 6 deletions
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5
mysql-test/t/subselect.test
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@@ -12,6 +12,7 @@ EXPLAIN SELECT 1 FROM (SELECT 1 as a) HAVING (SELECT a)=1;
SELECT 1 FROM (SELECT 1 as a) HAVING (SELECT a)=1;
-- error 1054
SELECT (SELECT 1), a;
SELECT 1 as a FROM (SELECT 1) HAVING (SELECT a)=1;
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8;
create table t1 (a int);
create table t2 (a int, b int);
@@ -197,3 +198,7 @@ EXPLAIN SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT 1
EXPLAIN SELECT MAX(numreponse) FROM t1 WHERE numeropost='1';
EXPLAIN SELECT numreponse FROM t1 WHERE numeropost='1' AND numreponse=(SELECT MAX(numreponse) FROM t1 WHERE numeropost='1');
drop table t1;
CREATE TABLE t1 (a int(1));
INSERT INTO t1 VALUES (1);
SELECT 1 FROM (SELECT a FROM t1) HAVING (SELECT a)=1;
drop table t1;