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Merge mysql.com:/home/mydev/mysql-5.0

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into  mysql.com:/home/mydev/mysql-5.0-5000
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unknown
2005-09-25 15:51:28 +02:00
parent bd8b5dc845 944db06bbb
commit 03fd2da4fe
7 changed files with 95 additions and 12 deletions
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26
mysql-test/r/merge.result
View File

@ -653,6 +653,32 @@ ERROR HY000: You can't specify target table 't2' for update in FROM clause
create table t3 engine=merge union=(t1, t2) select (select max(a) from t2);
ERROR HY000: You can't specify target table 't2' for update in FROM clause
drop table t1, t2;
create table t1 (
a double(16,6),
b varchar(10),
index (a,b)
) engine=merge union=(t2,t3);
create table t2 (
a double(16,6),
b varchar(10),
index (a,b)
) engine=myisam;
create table t3 (
a double(16,6),
b varchar(10),
index (a,b)
) engine=myisam;
insert into t2 values ( null, '');
insert into t2 values ( 9999999999.999999, '');
insert into t3 select * from t2;
select min(a), max(a) from t1;
min(a) max(a)
9999999999.999998 9999999999.999998
flush tables;
select min(a), max(a) from t1;
min(a) max(a)
9999999999.999998 9999999999.999998
drop table t1, t2, t3;
create table t1 (a int,b int,c int, index (a,b,c));
create table t2 (a int,b int,c int, index (a,b,c));
create table t3 (a int,b int,c int, index (a,b,c))

36
mysql-test/t/merge.test
View File

@ -288,6 +288,42 @@ create table t3 engine=merge union=(t1, t2) select * from t2;
create table t3 engine=merge union=(t1, t2) select (select max(a) from t2);
drop table t1, t2;
#
# Bug#9112 - Merge table with composite index producing invalid results with some queries
# This test case will fail only without the bugfix and some
# non-deterministic circumstances. It depends on properly initialized
# "un-initialized" memory. At the time it happens with a standard
# non-debug build. But there is no guarantee that this will be always so.
#
create table t1 (
a double(16,6),
b varchar(10),
index (a,b)
) engine=merge union=(t2,t3);
create table t2 (
a double(16,6),
b varchar(10),
index (a,b)
) engine=myisam;
create table t3 (
a double(16,6),
b varchar(10),
index (a,b)
) engine=myisam;
insert into t2 values ( null, '');
# We may have insufficient accuracy for 16 digits of '9'.
# Suppress a "truncate" warning due to accuracy problems.
--disable_warnings
insert into t2 values ( 9999999999.999999, '');
--enable_warnings
insert into t3 select * from t2;
select min(a), max(a) from t1;
flush tables;
select min(a), max(a) from t1;
drop table t1, t2, t3;
# BUG#6699 : no sorting on 'ref' retrieval
create table t1 (a int,b int,c int, index (a,b,c));
create table t2 (a int,b int,c int, index (a,b,c));