Hello
you should to use a citext datatype
http://www.postgresql.org/docs/9.0/interactive/citext.html
regards
Pavel Stehule
2011/1/13 Phillip Smith <phillip@softworks.com>:
> Hi,
> I'm moving over from MS SQL. I've been googling this for ages now and
> suprisingly cannot find a clear answer.
>
> I want my data in tables to be case insensitive.
>
> This is so i can:
> 1. Put keys on natural key fields, for instance a product part number. I
> product number 'ABC123' inserted i need to disallow 'abc123' to be inserted
> as a second row. Please don't tell me i have to add another column holding a
> lowered version of the product number. My database is littered with this
> need and i would end up bloating my table schema.
>
> 2. I need to query case insensitively. SELECT * FROM product WHERE
> product_number = 'ABC123' should return the same row as SELECT * FROM
> product WHERE product_number = 'abc123'
>
> Is there a database wide collation setting i can make, or a case
> insensitive character type. There are lots of online posts regarding using
> LOWER function for querying. This is a workaround for point (2) but does not
> remedy point (1) above.
>
> Many thanks
>
> Phillip
>
> Phillip Smith
>