Re: Passing varchar parameter to INTERVAL

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От rob stone
Тема Re: Passing varchar parameter to INTERVAL
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Msg-id 1473254692.7170.6.camel@gmail.com
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Ответ на Passing varchar parameter to INTERVAL  (Alexander Farber <alexander.farber@gmail.com>)
Ответы Re: Passing varchar parameter to INTERVAL  (Alexander Farber <alexander.farber@gmail.com>)
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Hello,
On Wed, 2016-09-07 at 15:05 +0200, Alexander Farber wrote:
> Good afternoon,
>
> when trying to create a custom function to temporary ban a user:
>
> CREATE OR REPLACE FUNCTION words_ban_user(
>         IN in_uid integer,
>         IN in_until varchar,    -- '1 week' OR '1 month' OR '1 year'
>         IN in_reason varchar)
>         RETURNS void AS
> $func$
> BEGIN
> ........
>         UPDATE words_users SET
>                 banned_until  = CURRENT_TIMESTAMP + INTERVAL
> in_until,
>                 banned_reason = in_reason,
>                 vip_until     = vip_until + INTERVAL in_until,    --
> for paying user
>                 grand_until   = grand_until + INTERVAL in_until
>         WHERE uid = in_uid;
>
> END
> $func$ LANGUAGE plpgsql;
>
> in 9.5.4 I unfortunately get the error:
>
> ERROR:  syntax error at or near "in_until"
> LINE 69: ...       banned_until = CURRENT_TIMESTAMP + INTERVAL
> in_until,
>                                                                ^
> Is there please a better way here?
>
> Thank you
> Alex
>


I think the interval values need to be quoted.
In any event I always use the P or T syntax. 'P1D' means add one day,
etc.

HTH,
Rob


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