Populate table with all foreign keys from other table's primary key
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I'm working on a Django application and created a new table (tblA) which has a foreign key that is linked to the primary key of (tblB).

Now tblB already has several entries (and thus several primary keys in it already).

I want to run an SQL query that will create a new row for every primary key in tblA inside tblB with the corresponding foreign key copied and default values of all other columns in tblB inserted in the rows.

I hope I was clear enough!