用于创建函数的SQL语法错误

Question

我尝试运行以下代码：

std.execute(" DELIMITER $$" +
                " CREATE FUNCTION findfood ( col VARCHAR , inp VARCHAR , c_length INT , i_length INT ) " +
                " RETURNS VARCHAR" +
                " BEGIN " +
                "   DECLARE i INT;" +
                "   SET i = 0;" +
                "   DECLARE co INT;" +
                "   SET co = 0;" +
                "   DECLARE out VARCHAR;" +
                "   DECLARE out_match VARCHAR;" +
                "   lp: LOOP" +
                "     IF CAST(SUBSTRING_INDEX(col,'-',1) AS UNSIGNED) > CAST(SUBSTRING_INDEX(inp,'-',1) AS UNSIGNED) THEN" +
                "        SET i = i+1;" +
                "        SET inp = SUBSTRING_INDEX(inp,'-',i - i_length);" +
                "     ELSEIF CAST(SUBSTRING_INDEX(col,'-',1) AS UNSIGNED) < CAST(SUBSTRING_INDEX(inp,'-',1) AS UNSIGNED) THEN" +
                "        SET out = CONCAT(out,'-',SUBSTRING_INDEX(col,'-',1));" +
                "        SET co = co+1;" +
                "        SET col = SUBSTRING_INDEX(col,'-',co - c_length);"+
                "     ELSE" +
                "        SET out_match = CONCAT(out_match,'-',SUBSTRING_INDEX(col,'-',1));"  +
                "        SET co = co+1;" +
                "        SET col = SUBSTRING_INDEX(col,'-',co - c_length); " +
                "        SET i = i+1;" +
                "        SET inp = SUBSTRING_INDEX(inp,'-',i - i_length);" +
                "    END IF;" +
                "    IF i = i_length THEN" +
                "         IF co = c_length THEN" +
                "               LEAVE lp;" +
                "         ELSE" +
                "               SET out = CONCAT(out,col);" +
                "               LEAVE lp;" +
                "         END IF;" +
                "     ELSE " +
                "          IF co = c_length THEN" +
                "               LEAVE lp;" +
                "          ELSE" +
                "               ITERATE lp;" +
                "               END IF;" +
                "      END IF;" +
                "   END LOOP lp;" +
                "   SET out = CONCAT(SUBSTRING_INDEX(out_match,'-',1),'_',SUBSTRING_INDEX(out,'-',1));" +
                "   RETURN out;" +
                "END $$" +
                "DELIMITER ;");

++++++++++++++++++++++++++++++++++++++++++++++ < / p>

但是我收到了这个错误：

  

java.sql.SQLSyntaxErrorException :( conn：115）您的SQL语法中有错误;查看与MariaDB服务器版本对应的手册，以便在'DELIMITER $$ CREATE FUNCTION findfood附近使用正确的语法（col TEXT，inp TEXT，c_length INT，i_l'在第1行

++++++++++++++++++++++++++++++++++++++++++++++ < / p>