sql-server - SQL Server AND 和 OR 优先级

Question

我正在调试一些代码并遇到了这个。有人可以根据 SQL Server 的顺序在这个语句周围加上括号来帮助我。只是我，还是这是糟糕的编码？

WHERE 
T1.C1 = @VAR1 AND T1.C2 = @VAR2 AND T1.C3 NOT IN(@VAR3)
OR T2.C1 = @VAR2 OR T3.C1 = @VAR2

Answer 1

照原样，它将被解析为

WHERE 
(T1.C1 = @VAR1 AND T1.C2 = @VAR2 AND T1.C3 NOT IN(@VAR3))
OR
(T2.C1 = @VAR2)
OR
(T3.C1 = @VAR2)