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Bug#44040 MySQL allows creating a MERGE table upon VIEWs but crashes when

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using it.
The crash was due to a null pointer present for select_lex while 
processing the view.
Adding a check while opening the view to see if its a child of a 
merge table fixed this problem.
This commit is contained in:
Anurag Shekhar
2009-04-17 11:21:51 +05:30
parent 8de80ef1b4
commit e0e8ec4b28
3 changed files with 43 additions and 0 deletions
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12
mysql-test/r/merge.result
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@ -2115,4 +2115,16 @@ insert into m1 (col1) values (1);
insert into m1 (col1) values (1);
ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
drop table m1, t1;
CREATE TABLE t1 (
col1 INT(10)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE VIEW v1 as SELECT * FROM t1;
CREATE TABLE m1 (
col1 INT(10)
)ENGINE=MRG_MyISAM DEFAULT CHARSET=latin1 INSERT_METHOD=LAST UNION=(v1);
#Select should detect that the child table is a view and fail.
SELECT * FROM m1;
ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist
DROP VIEW v1;
DROP TABLE m1, t1;
End of 5.1 tests