Re: psql: add \create_function command - Mailing list pgsql-hackers

From Pavel Stehule
Subject Re: psql: add \create_function command
Date
Msg-id CAFj8pRDZsiAx+U3h8EUp=HUQrBhWDPcvW_5MmWstDqeu_4TjOg@mail.gmail.com
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In response to Re: psql: add \create_function command  (Tom Lane <tgl@sss.pgh.pa.us>)
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pá 26. 1. 2024 v 21:04 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal:
Pavel Stehule <pavel.stehule@gmail.com> writes:
> but why you need to do in psql? - you can prepare content outside and
> execute just like echo "CREATE FUNCTION ...." | psql

The bit that's probably hard if you're trying to do this in a shell
script is "quote this data as a SQL string literal".  psql can get
that right even in the face of encoding considerations,
standard_conforming_strings, etc.  Not sure you can build a
fully bulletproof solution outside.

I don't know, maybe I have a problem with the described use case. I cannot imagine holding the body and head of PL routines in different places and I don't understand the necessity to join it.

On second hand, few years ago (if I remember well, I proposed some like `:{file}`. I don't remember the syntax. But it was not finished, and then I wrote


The possibility for some simple import external data can be nice




                        regards, tom lane

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