????? ?col1????????? ?col2???????????col3
1??????a????????????? null???????????? b
就是類似上面那樣的,如何統(tǒng)計出第一行中列不為空的個數(shù)呢?請高手賜教
sql中如何統(tǒng)計一行中不為空的個數(shù)
慕尼黑5688855
2018-12-06 14:21:11