| From: | Fernando Schapachnik <fschapachnik(at)vianetworks(dot)com(dot)ar> |
|---|---|
| To: | "Samuel J(dot) Sutjiono" <ssutjiono(at)wc-group(dot)com> |
| Cc: | pgsql-sql(at)postgresql(dot)org, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Regular Expression for 'and' instead of 'or' |
| Date: | 2002-02-22 18:15:14 |
| Message-ID: | 20020222151514.E2066@ns1.via-net-works.net.ar |
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| Thread: | |
| Lists: | pgsql-general pgsql-sql |
En un mensaje anterior, Samuel J. Sutjiono escribió:
> This expression matches the word socks or shoes or nike in product category
> where productdescr ~* '(socks|shoes|nike)'
>
> Does anybody know what the expression should be if I want to do 'and' of those key words instead of 'or' ?
You have to use something like:
'(socks.*shoes.*nike)|(socks.*nike.*shoes)|...'
where ... is every other possible combination. Not pretty, but that's
a limitation of finite automata (or regular expressions, which are
the same).
Regards.
Fernando P. Schapachnik
Gerente de tecnología de red
y sistemas de información
VIA NET.WORKS ARGENTINA S.A.
fschapachnik(at)vianetworks(dot)com(dot)ar
Tel.: (54-11) 4323-3381
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