要最多两个表列 [英] Want maximum of two table column

问题描述

你好，
我创建了两个表，分别是indledger和cash_indledger，它们具有两个相同的列，即"entryno".现在，我想要"entryno"的最大值.这两个表中的max(entryno)可以在单个查询中集中起来....
请帮帮我....
谢谢.

Hello,
I have created two tables namely indledger and cash_indledger which has two same column namely "entryno".Now i want the maximum of "entryno" ie. max(entryno) from these two tables collectively in a single query....
Please help me....
Thank you.

推荐答案

使用UNION

Use UNION

SELECT MAX(entryno) AS m FROM tbl1
UNION
SELECT MAX(exitno) AS m FROM tbl2

SELECT CASE WHEN MAX(indledger.entryno) > MAX(cash_indledger.entryno) THEN MAX(indledger.entryno) ELSE MAX(cash_indledger.entryno) END FROM indledger, cash_indledger;

这篇关于要最多两个表列的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！