Question

我正在学习如何在MySQL中创建存储过程，并且在创建存储过程时遇到错误。

这是我的存储过程：

CREATE DEFINER=`root`@`localhost` PROCEDURE `GetCategoryWiseProducts`(IN param varchar(250), IN isAll boolean)
BEGIN
    declare catName VARCHAR(250) default '';
    declare catId VARCHAR(250) default 0;

    IF(isAll) THEN
        SELECT 'All Products' as category_name, COUNT(*) as total from product_mast;
    ELSE 
        SELECT category_name INTO catName, category_id INTO catId from category_mast WHERE slug = param;
        SELECT catName as category_name, COUNT(*) as total from product_mast WHERE category_id = @category_id;
    END IF;
END;

在else语句的第一个查询中获得错误from is not valid at this position, expecting : ';'。

谢谢

Answer 1

使用pi@Harald:~ $ java -version openjdk version "9-Raspbian" OpenJDK Runtime Environment (build 9-Raspbian+0-9b181-4bpo9rpt1) OpenJDK Server VM (build 9-Raspbian+0-9b181-4bpo9rpt1, mixed mode)，请参见24.1 Defining Stored Programs：

pi@Harald:~ $ javac -version
javac 9-Raspbian

DELIMITER变量集的值在哪里？

Answer 2

选择语法为SELECT id，数据INTO @ x，@ y FROM test.t1 LIMIT 1;参见https://dev.mysql.com/doc/refman/8.0/en/select-into.html

from在此位置无效，期望：';'在MySQL中

2 个答案: