Re: [pgsql-advocacy] interesting PHP/MySQL thread - Mailing list pgsql-general

> > Personally, if I want case insensitivity, I'll WRITE IT INTO THE CODE,
> > but I can see how some people might think that 'NOLAN', 'Nolan' and
> > 'nolan' should be considered as the same data.
>
> Oh, you mean like "SELECT * FROM table WHERE field ~* 'nolan';"?

No, I mean as in "SELECT * FROM table WHERE field = 'nolan';"

That will match values with any combination of upper and lower case
letters that fold to 'nolan':  'Nolan', 'NOLAN', etc.

Also, unlike PostgreSQL (at least in 7.3), if you define an index on
the column, mysql appears to use it for LIKE queries.

   "SELECT * FROM table WHERE field LIKE 'nolan%';"

is very fast in mysql but not in 7.3, and even non-anchored LIKE searches
in mysql appear to be using the index.

   "SELECT * FROM table WHERE field LIKE '%nolan%';"

executes considerably faster with an index on field than without one.
--
Mike Nolan