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Re: re-novice coming back to pgsql: porting an SQLite update statement to postgres

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On 7/23/24 13:11, Vincent Veyron wrote:
On Mon, 15 Jul 2024 20:31:13 +0000
Dan Kortschak <dan+pgsql@xxxxxxxxxxxx> wrote:

My question is where would be the best place for me to looks to learn
about how to implement a port of this SQLite? and what would broadly be
the most sensible approach to take (to narrow down what I need to read
through in learning)?


This is the goto page for anything SQL :
https://www.postgresql.org/docs/current/sql-commands.html

For DateTime types :
https://www.postgresql.org/docs/current/datatype-datetime.html

For JSON types :
https://www.postgresql.org/docs/current/datatype-json.html

Just know that SQLite does not enforce types, therefore it is entirely possible that there are values in fields that are not valid in Postgres.

Think:

select ''::integer
ERROR:  invalid input syntax for type integer: ""
LINE 1: select ''::integer



If your query works in SQLite, all you have to do is read those, and try to port; if it fails, read them again. Also search the archives of the pgsql-general list, many answers in there



--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx






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