Question

There is a User Table.

Id    Name    Surname     Address     OID
1     n1      s1          a1          24
2     n2      s2          a2          24
3     n3      s3          a3          24
4     n4      s4          a4          12

I want to duplicate rows where OID = 24. I wrote below query but I got error.

INSERT INTO [User] ([OID],[Name],[Surname],[Address]) SELECT * FROM [User] Where OID = 24

Error:

The select list for the INSERT statement contains more items than the
insert list. The number of SELECT values must match the number of
INSERT columns.

How can Insert these rows w/o error? Also I dont know how many records will return from SELECT statement, sometimes it can be 1 sometimes 5, sometimes 15 etc.

Answer 1

    INSERT INTO [User] ([OID],[Name],[Surname],[Address])  
    SELECT [OID],[Name],[Surname],[Address] FROM [User] Where OID = 24

your select * is retrieving 5 fields, but you only can insert 4.
So, you must the fields to insert