SQL：如何选择变量值？

Question

我有一个查询

INSERT INTO ... SET ....; 
SET @last_id = LAST_INSERT_ID();
INSERT INTO ... SET .... ,item_id = @last_id;
INSERT INTO ... SET .... ,item_id = @last_id;

我想输出变量的结果值。例如：

SELECT @last_id as ID;

查询：

INSERT INTO `targets` SET `name` = '123';
SET @target_id = LAST_INSERT_ID();
SELECT @target_id as id;

Answer 1

这不是查询，而是一组查询 按顺序依次运行它们。