I have a core table with tens-of-millions of rows, and need to delete about a 
million records.

There are 21 foreign key checks against this table.  Based on the current 
performance, it would take a few days to make my deletions.

None of the constraints were defined as `DEFERRABLE INITIALLY IMMEDIATE', so 
I'm out of luck on deferring them.

Dropping/redefining constraints looks to be an ordeal --  and something I'm 
scared to make a mistake on.

i looked into disabling triggers on a table, but I couldn't find any info on 
how to trigger at the end of the transaction so I can ensure integrity.

does anyone have suggestions on things that might work?
 

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