ISNULLis a function specific to the SQL dialect, whileCOALESCEis a standard SQL function. The former behaves differently depending on the specific implementation. The second always returns the first non-NULLvalue, regardless of the database system in use. ...
Up in the Air-17 Wedding’s meaning. Can you believe it’s tomorrow? How are you gonna sleep? I don’t know. Well, do you want some Xanax(安眠药)? I don’t think that’s for sleeping. Yeah. No, I... Java的多线程问题,带jvm解析 ...
So, you aren’t a NULL value, as the MSDN entry says you should be, otherwise SSMS should show the word NULL with a yellow background (as it did in the earlier screenshots). Oh, and my code is also looking for a non-null mirroring_witness_state_desc value that is anything other th...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
has the intended meaning of If and only if all expressions are nonnullable, the result is typed as nonnullable. Obviously those mean different things, but that reading is at least consistent with all the examples I've seen so far.