本文介绍了SQL查询使用Column1值和column2值相同显示计数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

sno Name1 Name2 Data

-----------------------

1 Jai Jai 20

2 mani mani 30

3 kumar ganesh 40

4 siva kumar 50

5 sai sai 60



SQL查询是=从表名中选择Count(*)作为countt,其中(Name1 == Name2)



i这是我自己的查询,这是错误的。





i想要的输出是:



Countt

------

3

sno Name1 Name2 Data
-----------------------
1 Jai Jai 20
2 mani mani 30
3 kumar ganesh 40
4 siva kumar 50
5 sai sai 60

SQL Query is = Select Count(*) as countt from tablename where (Name1 == Name2)

i thing this is my own query this s wrong one.


i want the output is :

Countt
------
3

推荐答案

Select Count(*) as countt from tablename where Name1 = Name2



SELECT COUNT(*) FROM tablename WHERE Name1 = Name2


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09-11 13:38