Magnus Hagander wrote:
Per previous discussions, here are two functions to send INT and TERM
signals to other backends.They permit only INT and TERM, and permits
sending only to postgresql backends (as registered in pgstat).

Why does this depend on pgstat? ISTM it would be better to use the per-backend PGPROC information, which is stored in shared memory. Consider TransactionIdIsInProgress() for an example.


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TIP 9: the planner will ignore your desire to choose an index scan if your
     joining column's datatypes do not match

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