Mysql多次使用同一参数准备语句
我编写了如下存储过程:Mysql多次使用同一参数准备语句,mysql,sql,Mysql,Sql,我编写了如下存储过程: DELIMITER $$ CREATE PROCEDURE searchByTerm(term VARCHAR(300)) BEGIN SET @statment = "Select name,description from products where name like '%?%' OR description like '%?%'"; PREPARE stmt FROM @statment; SET @a = term;
DELIMITER $$
CREATE PROCEDURE searchByTerm(term VARCHAR(300))
BEGIN
SET @statment = "Select name,description from products where name like '%?%' OR description like '%?%'";
PREPARE stmt FROM @statment;
SET @a = term;
SET @b = term;
EXECUTE stmt USING @a,@b;
DEALLOCATE PREPARE stmt;
END$$
称之为:
CALL searchByTerm('xyz');
它会导致以下错误:
Error Code : 1210
Incorrect arguments to EXECUTE
我做错什么了吗?我知道可以用concat语句完成,但为什么它不能像这样工作呢?我不能多次使用同一个参数吗?感谢您的帮助。在查询中使用
SET @statment = "Select name,description
from products
where name like CONCAT('%', ? ,'%') OR
description like CONCAT('%', ? ,'%')";
所以您的完整查询将如下所示
DELIMITER $$
CREATE PROCEDURE searchByTerm(term VARCHAR(300))
BEGIN
SET @statment = "Select name,description
from products
where name like CONCAT('%', ? ,'%') OR
description like CONCAT('%', ? ,'%')";
PREPARE stmt FROM @statment;
SET @a = term;
SET @b = term;
EXECUTE stmt USING @a,@b;
DEALLOCATE PREPARE stmt;
END$$
伟大的它工作了…很多谢谢:这真的是一个愚蠢的错误,我没有考虑“?”作为字符串的一部分。