Re: back references using regex

How about this then, I didn't retain that information
from the doc. ;) I sometimes glaze over important gems
every now and then. It happens. I'm not a robot, yet.
At least I know the answer to my question is now
retained. You were a big help too. Thank you very
much. I appreciate it.

Speaking of data manipulation in a table... I was
thinking about storing and manipulating a list in a
column...

Is it possible to append and delete (unknown location)
items in a list? Or is another way more efficient? I'm
relatively new so sorry if I'm asking too many
questions. If possible, I will read about it if
there's docs for it so I don't trouble anyone with my
questions. It would be sweet to do that at the
database level.

Thanks again,
MP
Posgresql convert

--- Michael Fuhr <mike@fuhr.org> wrote:

> On Sat, Sep 10, 2005 at 10:27:13AM -0700, Matthew
> Peter wrote:
> > ahhhhhhhhh I swear I never came across any of
> these
> > gems of information in the docs. It was these
> subtle
> > differences that were throwing me.
>
> From "Regular Expression Escapes" in the "Pattern
> Matching" section
> of the manual:
>
>   A back reference (\n) matches the same string
> matched by the
>   previous parenthesized subexpression specified by
> the number n
>   (see Table 9-18).  For example, ([bc])\1 matches
> bb or cc but not
>   bc or cb.  The subexpression must entirely precede
> the back
>   reference in the RE.  Subexpressions are numbered
> in the order
>   of their leading parentheses.  Non-capturing
> parentheses do not
>   define subexpressions.
>
>
http://www.postgresql.org/docs/8.0/static/functions-matching.html#POSIX-ESCAPE-SEQUENCES
>
> --
> Michael Fuhr
>
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