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mysql> show variables like '%func%';
+-----------------------------------------+-------+
| Variable_name                            | Value |
+-----------------------------------------+-------+
| log_bin_trust_function_creators | ON    |
+-----------------------------------------+-------+
1 row in set (0.02 sec)
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mysql> set global log_bin_trust_function_creators=1;
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mysql> use xxx;
Database changed
delimiter $$ÊÇÉèÖà $$ΪÃüÁîÖÕÖ¹·ûºÅ£¬´úÌæ·ÖºÅ£¬ÒòΪ·ÖºÅÔÚbegin...endÖлáÓõ½£»
mysql> delimiter $$
CREATE FUNCTION first_func(param1 varchar(5),parmam2 varchar(5),param3 varchar(10))
RETURNS TINYINT
BEGIN
   RETURN 1;
END
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mysql> delimiter ;
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mysql> select first_func('aaa','bbb','ccc');
+-------------------------------+
| first_func('aaa','bbb','ccc') |
+-------------------------------+
|                             1 |
+-------------------------------+
1 row in set (0.47 sec)
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mysql> drop function first_func ;
Query OK, 0 rows affected (0.11 sec)
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1) show function status
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 mysql>show create function bobj.first_func;