Re: [COMMITTERS] pgsql: Remove typename from A_Const. - Mailing list pgsql-hackers

From Tom Lane
Subject Re: [COMMITTERS] pgsql: Remove typename from A_Const.
Date
Msg-id 5500.1209500159@sss.pgh.pa.us
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In response to Re: [COMMITTERS] pgsql: Remove typename from A_Const.  (Alvaro Herrera <alvherre@commandprompt.com>)
List pgsql-hackers
Alvaro Herrera <alvherre@commandprompt.com> writes:
> Tom Lane escribi�:
>> I'm thinking is that we should get rid of the ::float8 decoration too,
>> and thereby be able to revert some of the ugly code added elsewhere such
>> as guc.c.

> Hmm, I'm not sure but I think the typecast is needed in the guc.c code
> in order to pass the fact that the Const is an Interval.

Yeah, I had just found that out --- it's not so much that we care that
it's an interval, as that the original input might have had typmod
restrictions that need to be applied to the interval value.  Definitely
a kluge to support a corner case ...

Anyway, I'm in the middle of testing removal of the ::float8 cast
--- we can at least simplify parse_type.c's handling of typmods here.
I also see that we can eliminate some manual construction of A_Const's
in gram.y, since makeFloatConst and friends no longer do any unwanted
extra stuff.
        regards, tom lane


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