摘要:
Why use the 'ref' keyword when passing an object? Pass a ref if you want to change what the object is: TestRef t = new TestRef(); t.Something = "Foo"; 阅读全文
摘要:
Column 'dbo.tbm_vie_View.ViewID' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause. htt 阅读全文
摘要:
https://docs.microsoft.com/en-us/sql/t-sql/language-elements/logical-operators-transact-sql Logical operators test for the truth of some condition. Lo 阅读全文