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Don't use signal() on windows.

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Added missing InnoDB variables to SHOW VARIABLES.
Fixed bug when doing WHERE 'column_name=NULL' on an indexed column that had NULL values.
Fixed bug when doing 'LEFT JOIN ...  ON (column_name = constant) WHERE column_name = constant'


Docs/manual.texi:
  Changelog
libmysql/libmysql.c:
  Don't use signal() on windows.
mysql-test/r/join_outer.result:
  Test for bugfix
mysql-test/r/null.result:
  Test for bugfix
mysql-test/t/join_outer.test:
  Test for bugfix
mysql-test/t/null.test:
  Test for bugfix
sql/mysqld.cc:
  Add missing InnoDB variables to SHOW VARIABLES.
sql/sql_select.cc:
  Fixed bug when doing WHERE 'column_name=NULL' on an indexed column that had NULL values.
  Fixed bug when doing 'LEFT JOIN ...  ON (column_name = constant) WHERE column_name = constant'
This commit is contained in:
unknown 2001-10-19 22:10:54 +03:00
commit 253b9ecb11
8 changed files with 58 additions and 7 deletions
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15
mysql-test/t/null.test
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@ -20,3 +20,18 @@ create table t1 (x int);
insert into t1 values (null);
select * from t1 where x != 0;
drop table t1;
#
# Test problem med index on NULL columns and testing with =NULL;
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
indexed_field int default NULL,
KEY indexed_field (indexed_field)
);
INSERT INTO t1 VALUES (NULL),(NULL);
SELECT * FROM t1 WHERE indexed_field=NULL;
SELECT * FROM t1 WHERE indexed_field IS NULL;
SELECT * FROM t1 WHERE indexed_field<=>NULL;
DROP TABLE t1;