Added a test case with views for bug #17526.

mysql-test/r/func_str.result:
  Adjusted results for the test case of bug 17526.
sql/item_strfunc.cc:
  Post-merge modification

mysql-test/r/func_str.result

@@ -1059,27 +1059,27 @@ EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(s) > 'ab';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1003	select test.t1.s AS `s` from test.t1 where (trim(test.t1.s) > _latin1'ab')
+Note	1003	select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(`test`.`t1`.`s`) > _latin1'ab')
 EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM('y' FROM s) > 'ab';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1003	select test.t1.s AS `s` from test.t1 where (trim(both _latin1'y' from test.t1.s) > _latin1'ab')
+Note	1003	select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(both _latin1'y' from `test`.`t1`.`s`) > _latin1'ab')
 EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(LEADING 'y' FROM s) > 'ab';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1003	select test.t1.s AS `s` from test.t1 where (trim(leading _latin1'y' from test.t1.s) > _latin1'ab')
+Note	1003	select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(leading _latin1'y' from `test`.`t1`.`s`) > _latin1'ab')
 EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(TRAILING 'y' FROM s) > 'ab';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1003	select test.t1.s AS `s` from test.t1 where (trim(trailing _latin1'y' from test.t1.s) > _latin1'ab')
+Note	1003	select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(trailing _latin1'y' from `test`.`t1`.`s`) > _latin1'ab')
 EXPLAIN EXTENDED SELECT s FROM t1 WHERE TRIM(BOTH 'y' FROM s) > 'ab';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
 Warnings:
-Note	1003	select test.t1.s AS `s` from test.t1 where (trim(both _latin1'y' from test.t1.s) > _latin1'ab')
+Note	1003	select `test`.`t1`.`s` AS `s` from `test`.`t1` where (trim(both _latin1'y' from `test`.`t1`.`s`) > _latin1'ab')
 DROP TABLE t1;
 End of 4.1 tests
 create table t1 (d decimal default null);

mysql-test/r/view.result

@@ -2774,3 +2774,36 @@ Field	Type	Null	Key	Default	Extra
 COALESCE(i,j)	int(11)	YES		NULL	
 DROP VIEW v1;
 DROP TABLE t1,t2;
+CREATE TABLE t1 (s varchar(10));
+INSERT INTO t1 VALUES ('yadda'), ('yady');
+SELECT TRIM(BOTH 'y' FROM s) FROM t1;
+TRIM(BOTH 'y' FROM s)
+adda
+ad
+CREATE VIEW v1 AS SELECT TRIM(BOTH 'y' FROM s) FROM t1;
+SELECT * FROM v1;
+TRIM(BOTH 'y' FROM s)
+adda
+ad
+DROP VIEW v1;
+SELECT TRIM(LEADING 'y' FROM s) FROM t1;
+TRIM(LEADING 'y' FROM s)
+adda
+ady
+CREATE VIEW v1 AS SELECT TRIM(LEADING 'y' FROM s) FROM t1;
+SELECT * FROM v1;
+TRIM(LEADING 'y' FROM s)
+adda
+ady
+DROP VIEW v1;
+SELECT TRIM(TRAILING 'y' FROM s) FROM t1;
+TRIM(TRAILING 'y' FROM s)
+yadda
+yad
+CREATE VIEW v1 AS SELECT TRIM(TRAILING 'y' FROM s) FROM t1;
+SELECT * FROM v1;
+TRIM(TRAILING 'y' FROM s)
+yadda
+yad
+DROP VIEW v1;
+DROP TABLE t1;

mysql-test/t/view.test

@@ -2643,3 +2643,27 @@ DESCRIBE t2;
 
 DROP VIEW v1;
 DROP TABLE t1,t2;
+
+#
+# Bug #17526: views with TRIM functions
+#
+
+CREATE TABLE t1 (s varchar(10));
+INSERT INTO t1 VALUES ('yadda'), ('yady');
+
+SELECT TRIM(BOTH 'y' FROM s) FROM t1;
+CREATE VIEW v1 AS SELECT TRIM(BOTH 'y' FROM s) FROM t1;
+SELECT * FROM v1;
+DROP VIEW v1;
+
+SELECT TRIM(LEADING 'y' FROM s) FROM t1; 
+CREATE VIEW v1 AS SELECT TRIM(LEADING 'y' FROM s) FROM t1;
+SELECT * FROM v1;
+DROP VIEW v1;
+
+SELECT TRIM(TRAILING 'y' FROM s) FROM t1; 
+CREATE VIEW v1 AS SELECT TRIM(TRAILING 'y' FROM s) FROM t1;
+SELECT * FROM v1;
+DROP VIEW v1;
+
+DROP TABLE t1;

sql/item_strfunc.cc

@@ -1515,7 +1515,7 @@ void Item_func_trim::print(String *str)
   str->append(mode_name());
   str->append(' ');
   args[1]->print(str);
-  str->append(" from ",6);
+  str->append(STRING_WITH_LEN(" from "));
   args[0]->print(str);
   str->append(')');
 }