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Bug#19904: UDF: not initialized *is_null per row

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The is_null value was initialized once and thereafter only set to indicate
NULL, and never unset to indicate not-NULL.

Now set is_null to false, in addition to only setting it to true when the value 
in question is null.


mysql-test/r/udf.result:
  Add result.
mysql-test/t/udf.test:
  Add test.
sql/sql_udf.h:
  Initialize is_null to false before trying to use it, so that historical NULLs
  don't affect our operation.
This commit is contained in:
unknown 2006-06-08 13:25:28 -04:00
commit e2495206b2
3 changed files with 32 additions and 0 deletions
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18
mysql-test/r/udf.result
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@ -76,6 +76,24 @@ call XXX2();
metaphon(testval)
HL
drop procedure xxx2;
CREATE TABLE bug19904(n INT, v varchar(10));
INSERT INTO bug19904 VALUES (1,'one'),(2,'two'),(NULL,NULL),(3,'three'),(4,'four');
SELECT myfunc_double(n) AS f FROM bug19904;
f
49.00
50.00
NULL
51.00
52.00
SELECT metaphon(v) AS f FROM bug19904;
f
ON
TW
NULL
0R
FR
DROP TABLE bug19904;
End of 5.0 tests.
DROP FUNCTION metaphon;
DROP FUNCTION myfunc_double;
DROP FUNCTION myfunc_nonexist;