判断当表存在标识列的时候就要允许将显式值插入表的标识列中，设置：
Set Identity_Insert TableName Off
判断数据类型：
如，varchar,char,datetime,nvarchar,nchar，uniqueidentifier时候，在Insert字段中就要增加双引号，否则就不加。
| Use Test Go Declare @Table1 nvarchar(128), @Table2 nvarchar(128), @Sql1 nvarchar(4000), @Sql2 nvarchar(4000), @SqlIdentityInsert nvarchar(512) Set @Table1='DutyHistory' --源表 Set @Table2='Duty' --目标表 IF Object_id(@Table1,'U') Is Null Return If Isnull(@Table2,'')='' Set @Table2=@Table1 Set @SqlIdentityInsert='' If Exists(Select 1 From sys.columns Where Object_id=Object_id(@Table1,'U')) Set @SqlIdentityInsert='Select ''Set Identity_Insert '+@Table2+' On ''' Select @Sql1=Isnull(@Sql1+',',' Insert Into '+@Table2+' (')+Quotename(name), @Sql2=Isnull(@Sql2+'+'',''+','Select @Sql1+'' Select ''')+'+Case When '+Quotename(name)+' Is null Then ''null'' Else '+ Case When user_type_id In(175,61,239,231,58,98,36,167,241) Then '''''''''+Rtrim('+Quotename(name)+')+''''''''' Else 'Rtrim('+Quotename(name)+')' End +' End' From sys.columns Where Object_id=Object_id(@Table1,'U') Set @Sql1=@Sql1+')' Set @Sql2= 'Select Convert(nvarchar(max),''If Object_id('''''+@Table2+''''',''''U'''') Is Null Return;'') As SqlInsert Union All '+ @SqlIdentityInsert+' Union All '+ @Sql2+' From '+Quotename(@Table1)+Case @SqlIdentityInsert When '' Then '' Else ' Union All ' End+ Replace(@SqlIdentityInsert,' On ',' Off') Exec sp_executesql @Sql2,N'@Sql1 nvarchar(4000)',@Sql1 Result: SqlInsert --------------------------------------------------------- If Object_id('Duty','U') Is Null Return; Set Identity_Insert Duty On Insert Into Duty ([id],[Name],[WorkDate],[WorkHours]) Select 1,'Robert','01 1 2008 12:00AM',3.4 Insert Into Duty ([id],[Name],[WorkDate],[WorkHours]) Select 2,'Robert','01 2 2008 12:00AM',3.4 Insert Into Duty ([id],[Name],[WorkDate],[WorkHours]) Select 3,'Robert','01 3 2008 12:00AM',3.4 ... ... Insert Into Duty ([id],[Name],[WorkDate],[WorkHours]) Select 58,'Robert','02 27 2008 12:00AM',4.5 Insert Into Duty ([id],[Name],[WorkDate],[WorkHours]) Select 59,'Robert','02 28 2008 12:00AM',4.5 Insert Into Duty ([id],[Name],[WorkDate],[WorkHours]) Select 60,'Robert','02 29 2008 12:00AM',4.5 Set Identity_Insert Duty Off |
