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Fix for BUG#7455.

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The fix checks if the trim string argument is NULL. If so, the standard
mandates that the function result must be also NULL.
This commit is contained in:
timour@mysql.com
2004-12-28 11:57:56 +02:00
parent fbc96c79a1
commit 064c73490b
3 changed files with 24 additions and 1 deletions
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6
mysql-test/r/func_str.result
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@ -697,3 +697,9 @@ quote(ltrim(concat(' ', 'a')))
select quote(trim(concat(' ', 'a')));
quote(trim(concat(' ', 'a')))
'a'
select trim(null from 'kate') as "must_be_null";
must_be_null
NULL
select trim('xyz' from null) as "must_be_null";
must_be_null
NULL