From: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | lockhart(at)alumni(dot)caltech(dot)edu (Thomas G(dot) Lockhart) |
Cc: | hackers(at)postgresql(dot)org |
Subject: | Re: Function call problems with BETWEEN |
Date: | 1998-03-11 04:49:23 |
Message-ID: | 199803110449.XAA07467@candle.pha.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
> Probably the strongest solution would be to copy the entire parse tree.
> Is there already a function to do that? It seems like it would be a lot
> of work to start this from scratch.
>
> Another possible solution would be to have transformExpr() accept a
> previously transformed parse tree without damaging it. A simple minded
> fix having transformExpr() ignore the T_Const (the "105" node in the
> example) and T_Var nodes did not work.
>
> Yet another solution would be to have transformExpr() replicate parse
> trees instead of having gram.y do it.
>
> Any thoughts on this?
I am sure copyfuncs.c has some function to do this, but these are
parse-specific structures. Not sure if they do have such functions. I
considered the reuse a possible problem when I wrote the code, but could
not find any problems, so I left it.
--
Bruce Momjian | 830 Blythe Avenue
maillist(at)candle(dot)pha(dot)pa(dot)us | Drexel Hill, Pennsylvania 19026
+ If your life is a hard drive, | (610) 353-9879(w)
+ Christ can be your backup. | (610) 853-3000(h)
From | Date | Subject | |
---|---|---|---|
Next Message | The Hermit Hacker | 1998-03-11 05:17:02 | Re: [HACKERS] ODBC DRIVERS FOR 6.1/6.2 |
Previous Message | Michael Yeung | 1998-03-11 04:47:46 | ODBC DRIVERS FOR 6.1/6.2 |