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Fix for BUG#8397 (second commit after review):

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In Item_cache_decimal::store(item) the call item->val_decimal_result() 
returns NULL if the passed item has an SQL null value. Don't try copying
NULL into Item_cache_decimal::val in this case.


mysql-test/r/type_decimal.result:
  Test for BUG#8397
mysql-test/t/type_decimal.test:
  Test for BUG#8397
sql/item.cc:
  Fix for BUG#8397: In Item_cache_decimal::store(item) the call 
  item->val_decimal_result() returns NULL if the passed item has an SQL null 
  value. Don't try copying NULL into Item_cache_decimal::val in this case.
This commit is contained in:
unknown
2005-02-22 21:58:10 +03:00
parent 61f2abba64
commit 6850c17f94
3 changed files with 36 additions and 3 deletions
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18
mysql-test/r/type_decimal.result
View File

@ -1,4 +1,4 @@
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t1, t2;
SET SQL_WARNINGS=1;
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
@ -677,3 +677,19 @@ a
9999.999
0000.000
drop table t1;
CREATE TABLE t1
(EMPNUM CHAR(3) NOT NULL,
HOURS DECIMAL(5));
CREATE TABLE t2
(EMPNUM CHAR(3) NOT NULL,
HOURS BIGINT);
INSERT INTO t1 VALUES ('E1',40);
INSERT INTO t1 VALUES ('E8',NULL);
INSERT INTO t2 VALUES ('E1',40);
SELECT EMPNUM FROM t1 WHERE HOURS IN (SELECT HOURS FROM t2);
EMPNUM
E1
SELECT EMPNUM FROM t1 WHERE HOURS IN (SELECT HOURS FROM t1);
EMPNUM
E1
DROP TABLE t1,t2;

19
mysql-test/t/type_decimal.test
View File

@ -1,7 +1,7 @@
# bug in decimal() with negative numbers by kaido@tradenet.ee
--disable_warnings
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t1, t2;
--enable_warnings
SET SQL_WARNINGS=1;
@ -268,3 +268,20 @@ insert into t1 values ('1'),('+1'),('-1'),('0000000001'),('+0000000001'),('-0000
--enable_warnings
select * from t1;
drop table t1;
# Test for BUG#8397: decimal type in subselects (Item_cache_decimal)
CREATE TABLE t1
(EMPNUM CHAR(3) NOT NULL,
HOURS DECIMAL(5));
CREATE TABLE t2
(EMPNUM CHAR(3) NOT NULL,
HOURS BIGINT);
INSERT INTO t1 VALUES ('E1',40);
INSERT INTO t1 VALUES ('E8',NULL);
INSERT INTO t2 VALUES ('E1',40);
SELECT EMPNUM FROM t1 WHERE HOURS IN (SELECT HOURS FROM t2);
SELECT EMPNUM FROM t1 WHERE HOURS IN (SELECT HOURS FROM t1);
DROP TABLE t1,t2;