关于mysql临时笔记

查询两个条件的情况

SELECT
    * 
FROM
    investmenttab 
WHERE
    ( investment, investdays ) = 
( SELECT 
    investment, 
        investdays 
    FROM 
        investmenttab 
    WHERE 
        investmentlistid = 'ph-000000001' );

将查询结果直接存储到新表中（新表未创建）

create table temp as
select  ename  from employee_new 
;