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Bug#15130: CREATE .. SELECT was denied to use advantages of the SQL_BIG_RESULT.

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When the SQL_BIG_RESULT flag is specified SELECT should store items from the
select list in the filesort data and use them when sending to a client.
The get_addon_fields function is responsible for creating necessary structures
for that. But this function was allowed to do so only for SELECT and
INSERT .. SELECT queries. This makes the SQL_BIG_RESULT useless for
the CREATE .. SELECT queries.

Now the get_addon_fields allows storing select list items in the filesort
data for the CREATE .. SELECT queries.
This commit is contained in:
evgen@moonbone.local
2007-07-24 18:15:44 +04:00
parent 33518801fb
commit fd1a43b080
3 changed files with 25 additions and 1 deletions
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10
mysql-test/t/create.test
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@@ -1119,4 +1119,14 @@ show create table t1;
drop table t1;
#
# Bug#15130:CREATE .. SELECT was denied to use advantages of the SQL_BIG_RESULT.
#
create table t1(f1 int,f2 int);
insert into t1 value(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
flush status;
create table t2 select sql_big_result f1,count(f2) from t1 group by f1;
show status like 'handler_read%';
drop table t1,t2;
--echo End of 5.0 tests