我想用不同的值两次选择 2 列
SELECT id FROM ads WHERE onoff='1' AND again='0'
SELECT id FROM ads WHERE onoff='2' AND again='1'
SELECT id FROM ads WHERE onoff='3' AND again='1'
有没有办法在一个 sql 中完成这一切？
最佳答案
SELECT id
FROM ads
WHERE (onoff = '1' AND again = '0')
OR (onoff = '2' AND again = '1')
OR (onoff = '3' AND again = '1')
关于PHP/SQL : SELECT 2 columns 3 times with different values，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22156009/