mysql中不能創建函數的處理方法

 

在使用MySQL數據庫時，有時會遇到MySQL函數不能創建的情況。下面就教您一個解決MySQL函數不能創建問題的方法，供您借鑑參考。

出錯信息大致類似：

ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)
ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)

MySQL函數不能創建，是未開啓功能：

mysql> show variables like '%func%';
+---------------------------------+-------+
| Variable_name                   | Value |
+---------------------------------+-------+
| log_bin_trust_function_creators | OFF   |
+---------------------------------+-------+
1 row in set (0.00 sec)

mysql> set global log_bin_trust_function_creators=1;
Query OK, 0 rows affected (0.00 sec)

mysql> show variables like '%func%';
+---------------------------------+-------+
| Variable_name                   | Value |
+---------------------------------+-------+
| log_bin_trust_function_creators | ON    |
+---------------------------------+-------+
1 row in set (0.00 sec)mysql>

注意：在mysql環境中創建函數和過程時必須加入  delimiter $$ 和結束的 $$ 否則會報語法錯誤。

delimiter $$
drop function getParamDescByValue;
create function getParamDescByValue(
in_sParamCode 	VARCHAR(64),
in_sParamValue	VARCHAR(64)
) returns VARCHAR(255)
begin
DECLARE v_sTemp VARCHAR(255);
select  param_desc into @v_sTemp from info_param where param_code = in_sParamCode and  param_value = in_sParamValue;
return @v_sTemp;
end$$