Re: pgsql-server: Some preliminary documentation for composite-type stuff. - Mailing list pgsql-committers

From Tom Lane
Subject Re: pgsql-server: Some preliminary documentation for composite-type stuff.
Date
Msg-id 24299.1086583930@sss.pgh.pa.us
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In response to Re: pgsql-server: Some preliminary documentation for composite-type stuff.  (Alvaro Herrera <alvherre@dcc.uchile.cl>)
List pgsql-committers
Alvaro Herrera <alvherre@dcc.uchile.cl> writes:
> Nice work.  This is a cool unexpected step forward in functionality.

As recently as Thursday I didn't think this would get done for 7.5,
but I wanted to nibble off a few rough edges, and after a while there
weren't any left.

Or almost ... I just noticed that there's no convenient way to assign to
a subfield in UPDATE.  You can hack around it with something like
    UPDATE mytab SET myfield = ROW(myfield.a, newval, myfield.c)
but my goodness that's painful.  AFAICS the SQL99 spec gives license
to write
    UPDATE mytab SET myfield.b = newval
and I think I will look into making that happen tomorrow.  We already
have a solution in place for assigning to an array element, and this
doesn't seem much different.

            regards, tom lane

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