Commit d005299a authored by ingo@mysql.com's avatar ingo@mysql.com
Browse files

Bug#9112 - Merge table with composite index producing invalid results with some queries 

Reduced the precision of the test numbers.
Not all platforms could reproduce the exact numbers.
parent 4025d296

mysql-test/r/merge.result

+6 −6
Original line number Diff line number Diff line
@@ -620,28 +620,28 @@ create table t3 engine=merge union=(t1, t2) select * from t2; 
INSERT TABLE 't2' isn't allowed in FROM table list

drop table t1, t2;

create table t1 (

a double(16,6),

a double(14,4),

b varchar(10),

index (a,b)

) engine=merge union=(t2,t3);

create table t2 (

a double(16,6),

a double(14,4),

b varchar(10),

index (a,b)

) engine=myisam;

create table t3 (

a double(16,6),

a double(14,4),

b varchar(10),

index (a,b)

) engine=myisam;

insert into t2 values ( null, '');

insert into t2 values ( 9999999999.999999, '');

insert into t2 values ( 9999999999.9999, '');

insert into t3 select * from t2;

select min(a), max(a) from t1;

min(a)	max(a)

9999999999.999998	9999999999.999998

9999999999.9999	9999999999.9999

flush tables;

select min(a), max(a) from t1;

min(a)	max(a)

9999999999.999998	9999999999.999998

9999999999.9999	9999999999.9999

drop table t1, t2, t3;

mysql-test/t/merge.test

+4 −4
Original line number Diff line number Diff line
@@ -273,25 +273,25 @@ drop table t1, t2; 
# non-debug build. But there is no guarantee that this will be always so.

#

create table t1 (

 a double(16,6),

 a double(14,4),

 b varchar(10),

 index (a,b)

) engine=merge union=(t2,t3);



create table t2 (

 a double(16,6),

 a double(14,4),

 b varchar(10),

 index (a,b)

) engine=myisam;



create table t3 (

 a double(16,6),

 a double(14,4),

 b varchar(10),

 index (a,b)

) engine=myisam;



insert into t2 values ( null, '');

insert into t2 values ( 9999999999.999999, '');

insert into t2 values ( 9999999999.9999, '');

insert into t3 select * from t2;

select min(a), max(a) from t1;

flush tables;