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Fixed bug #17526: incorrect print method

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for class Item_func_trim. 
For 4.1 it caused wrong output for EXPLAIN EXTENDED commands
if expressions with the TRIM function of two arguments were used.
For 5.0 it caused an error message when trying to select
from a view with the TRIM function of two arguments.
This unexpected error message was due to the fact that the
print method for the class Item_func_trim was inherited from
the class Item_func. Yet the TRIM function does not take a list
of its arguments. Rather it takes the arguments in the form:
  [{BOTH | LEADING | TRAILING} [remstr] FROM] str) |
  [remstr FROM] str
This commit is contained in:
igor@olga.mysql.com
2006-07-19 12:36:55 -07:00
parent a8d230c672
commit f201828dd8
4 changed files with 64 additions and 0 deletions
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15
mysql-test/t/func_str.test
View File

@@ -697,5 +697,20 @@ SELECT a, CONCAT(a,' ',a) AS c FROM t1
INSTR(REVERSE(CONCAT(a,' ',a))," ")) = a;
DROP TABLE t1;
#
# Bug#17526: WRONG PRINT for TRIM FUNCTION with two arguments
#
CREATE TABLE t1 (s varchar(10));
INSERT INTO t1 VALUES ('yadda'), ('yaddy');
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(s) > 'ab';
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM('y' FROM s) > 'ab';
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(LEADING 'y' FROM s) > 'ab';
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(TRAILING 'y' FROM s) > 'ab';
EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(BOTH 'y' FROM s) > 'ab';
DROP TABLE t1;
--echo End of 4.1 tests