自动生成Insert数据的SQL脚本

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