写一个sqlserver中的身份证15位转18位的函数怎么写答:Create Function [dbo].[fn_SJ](@ID Varchar(15))Returns Varchar(18)As Begin If Len(@ID)!=15 Return Null Declare @SFZ Varchar(18)Set @SFZ=Left(@ID,6)+'19'+Right(@ID,9)Declare @Q Varchar(17),@YZM Varchar(1)Set @Q='1,0,X,9,8,7,6,5,4,3,2,'Declare @X Varch...