sql server - SQL INSERT INTO query copy 3 x times -

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i have master table , i'd insert into table straight forward copy. want copy table 3 x times changing value of 1 x field called comp (short company). in master table field comp contains value master. i'd change value 3 x new companies a, b & c.

how & in query do this?

much appreciated assistance!

lets have following table values , 1 more table same schema called anothertable

create table mastertable(    comp varchar(50),    moredata varchar(200) );

and have 3 values:

declare @comp1 varchar(50) = 'acomp', @comp2 varchar(50) = 'bcomp', @comp3 varchar(50) = 'ccomp';  insert anothertable select @comp1, moredata mastertable union  select @comp2, moredata mastertable union select @comp3, moredata mastertable

now there still issues of primary key, clustered index. have identity in these tables or identifier. if tables huge need in 3 inserts

insert anothertable select @comp1, moredata mastertable;  insert anothertable select @comp2, moredata mastertable;  insert anothertable select @comp3, moredata mastertable;

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