sql - SQL Server Insert table into same table?

Question

I am trying to create some test data for the project i am working on. At the moment I have about 64000 records in my table but I need more. My question is can i copy all these rows and insert them again ?

I have tried:

Select * INTO dbo.Calls from dbo.Calls

score 2 · Accepted Answer

因为主键必须包含唯一值，不能包含 NULL 值。因此，如果您的表没有主键，请使用以下查询。

对于所有列使用：

INSERT INTO dbo.Calls SELECT * fROM  dbo.Calls

对于选定的列使用：

 INSERT INTO dbo.Calls (<column name list>) SELECT  <column name list> FROM dbo.Calls

score 1 · Accepted Answer

使用这个查询，以防你没有primary key它

insert into table_name
select * from table_name

如果你有primary key然后使用这个

insert into table_name (col2,col3)
select col2,col3 from table_name

sql - SQL Server Insert table into same table?

2 回答 2

Related

Reference