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Merge

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sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
mysql-test/r/select.result:
  SCCS merged
mysql-test/t/select.test:
  SCCS merged
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2006-01-13 12:13:50 +03:00
parent 891202f7d1 593bed0d92
commit a8a4a22974
5 changed files with 42 additions and 3 deletions
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13
mysql-test/r/select.result
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@@ -3337,6 +3337,19 @@ id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 Using index
1 SIMPLE t3 const PRIMARY PRIMARY 8 const,const 1
DROP TABLE t1,t2,t3;
create table t1 (f1 int unique);
create table t2 (f2 int unique);
create table t3 (f3 int unique);
insert into t1 values(1),(2);
insert into t2 values(1),(2);
insert into t3 values(1),(NULL);
select * from t3 where f3 is null;
f3
NULL
select t2.f2 from t1 left join t2 on f1=f2 join t3 on f1=f3 where f1=1;
f2
1
drop table t1,t2,t3;
create table t1(f1 char, f2 char not null);
insert into t1 values(null,'a');
create table t2 (f2 char not null);