如何修复MySQL创建功能查询？

Question

我想添加mySQL函数：

CREATE FUNCTION `chf_get_translation`(translation_id INT, site_lang INT) 
RETURNS text CHARSET utf8
BEGIN

  DECLARE translation TEXT;

  SELECT title 
    INTO translation 
    FROM chf_translations 
   WHERE key_id = translation_id 
     AND lang_id = site_lang;

  RETURN translation;

END

但是获取错误：

1064-您的SQL语法有错误；检查与您的MySQL Server版本相对应的手册，以获取合适的语法，以接近“”第3行

Answer 1

尝试...

DELIMITER $$

CREATE FUNCTION `chf_get_translation`(translation_id INT, site_lang INT) 
RETURNS text CHARSET utf8
BEGIN

  DECLARE translation TEXT;

  SELECT title 
    INTO translation 
    FROM chf_translations 
   WHERE key_id = translation_id 
     AND lang_id = site_lang;

  RETURN translation;

END$$

Answer 2

DELIMITER $

CREATE FUNCTION `chf_get_translation`(translation_id INT, site_lang INT) 
RETURNS text CHARSET utf8
DETERMINISTIC
BEGIN

  DECLARE translation TEXT;

  SELECT title 
    INTO translation 
    FROM chf_translations 
   WHERE key_id = translation_id 
     AND lang_id = site_lang;

  RETURN translation;

END$