| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tarlika Elisabeth Schmitz <postgresql(at)numerixtechnology(dot)de> |
| Cc: | pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: extracting words |
| Date: | 2008-04-23 13:13:03 |
| Message-ID: | 20080423131303.GE4768@alvh.no-ip.org |
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| Thread: | |
| Lists: | pgsql-sql |
Tarlika Elisabeth Schmitz wrote:
> I need to extract the words from department_name and product_name
> (words are separated by spaces) and get something like:
>
> 1 cakes
> 1 desserts
> 1 apple
> 1 crumble
> 2 cakes
> 2 desserts
> 2 cheese
> 2 cake
> 3 starters
> 3 soups
> 3 french
> 3 onion
> 3 soup
regexp_split_to_table is handy (8.3 only):
select pk, regexp_split_to_table(product_name, '[& ]+') from products
union
select pk, regexp_split_to_table(dept_name, '[& ]+') from departments;
Add joins as desired.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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