Given is my table structure, now I need to write a query to compare "STRVAL1 and STRVAL2" then "BVAL1 and BVAL2", if both are not same, then that row should be returned.Given is my table structure, now I need to w
阅读背景：
如何在包含空值和空值的两列上写一个在哪里相等
来源：互联网
分享到：
