indexes on columns and functions

[Joseph Shraibman]

You can CREATE INDEX on multiple columns, and you can CREATE INDEX on a functions, but can
you create an index on multiple columns and functions? For example if I want to create an
index on lower(textfield), intfield
---------------------------(end of broadcast)---------------------------
TIP 1: subscribe and unsubscribe commands go to ma*******@postgresql.org

[Stephan Szabo]

On Wed, 2 Jul 2003, Joseph Shraibman wrote:

You can CREATE INDEX on multiple columns, and you can CREATE INDEX on
a functions, but can you create an index on multiple columns and
functions? For example if I want to create an index on
lower(textfield), intfield

In 7.3 or earlier you'd have to write a mangling function that took
multiple columns did functions you wanted and appended the fields together
in some fashion I believe. In 7.4 you can make a index like the above
with something like
create index foo on tab((lower(textfield)), intfield)

---------------------------(end of broadcast)---------------------------
TIP 5: Have you checked our extensive FAQ?

http://www.postgresql.org/docs/faqs/FAQ.html