Re: dynamically generate path to output file - Mailing list pgsql-general

From Osvaldo Kussama
Subject Re: dynamically generate path to output file
Date
Msg-id CADgbbqjOmphi4NYkcrSPNB-at6mB=77J+AB6czUhoOGYhRU7Kw@mail.gmail.com
Whole thread Raw
In response to dynamically generate path to output file  ("robert@redo2oo.ch" <robert@redo2oo.ch>)
List pgsql-general
2022-03-26 6:35 GMT-03:00, robert@redo2oo.ch <robert@redo2oo.ch>:
> Hi Friends
>
> I would like to generate the path of a CSV file to which I output a query.
>
> This is what I try:
>
> CREATEORREPLACEPROCEDUREexport_cvs(
> home_dir varchar
> )
> AS
> $BODY$
> DECLARE
> OUTFILE varchar;
> BEGIN
> OUTFILE = (home_dir || '/tmp/company.csv');
> copy(
> select'company_'||id as"External ID",
> nameas"Name",'True'as"Is a Company",
> email,
> phone ,
> company_registry
> fromres_company
> ) TOOUTFILE withCSV HEADER;
> END;
> $BODY$
> LANGUAGEplpgsql;
>
> this produces a syntax error:
>
> psql:export_contacts_short.sql:21: ERROR:  syntax error at or near
> "OUTFILE"
> LINE 17:     ) TO OUTFILE  with CSV HEADER;
>
>
> It works fine when I replace "TO OUTFILE" with a hard coded string.
>
> Can anybody of you give me a hint how to do that?
>
> Thanks a lot.
>
> Robert
>
>

Look at EXECUTE statement:
43.5.4. Executing Dynamic Commands
https://www.postgresql.org/docs/current/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-DYN

Osvaldo



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