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MySQL - 是合法做的 SlectT table1,*,table2.column from table1,table2 ?
它是合法的,但将给你两个表格的 product产品。 你们是否相信你想要一个 Car产品?
在大多数情况下,你将使用一个联合网络:
Select Table1.*, Table2,ColumnName
From Table1
INNER JOIN Table2
ON Table1.PKColumn = Table2.FKColumn
虽然这支“ta syntax”是合法的,但是,在没有传教者警告你的情况下,它非常容易地错过加入的条件。
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