Problem with create index

[Rajesh Kumar Mallah]

Hmmm... am i doing anything really silly?

tradein_clients=# CREATE INDEX profile_master2 on profile_master (lower( btrim(email) ) );
ERROR: parser: parse error at or near "(" at character 61
tradein_clients=#
Regds
mallah.

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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match

[Stephan Szabo]

On Tue, 11 Nov 2003, Rajesh Kumar Mallah wrote:

Hmmm... am i doing anything really silly?
Functional indexes on 7.3 and earlier only allow a function over one or
more columns (which would disallow the below as a function over a function
over a column). The usual workaround would be to make an immutable
function that does both functions on its argument something like:

create function lower_btrim(text) returns text as 'select
lower(btrim($1));' language 'sql' immutable;
create index profile_master2 on profile_master(lower_btrim(email));

In 7.4 I believe the below should work.
tradein_clients=# CREATE INDEX profile_master2 on profile_master (lower( btrim(email) ) );
ERROR: parser: parse error at or near "(" at character 61

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[Rajesh Kumar Mallah]

On Tuesday 11 Nov 2003 2:00 pm, Stephan Szabo wrote:

On Tue, 11 Nov 2003, Rajesh Kumar Mallah wrote:

Hmmm... am i doing anything really silly?
Functional indexes on 7.3 and earlier only allow a function over one or
more columns (which would disallow the below as a function over a function
over a column). The usual workaround would be to make an immutable
function that does both functions on its argument something like:

create function lower_btrim(text) returns text as 'select
lower(btrim($1));' language 'sql' immutable;
create index profile_master2 on profile_master(lower_btrim(email));

Thanks for the work around


In 7.4 I believe the below should work.

tradein_clients=# CREATE INDEX profile_master2 on profile_master (lower(
btrim(email) ) ); ERROR: parser: parse error at or near "(" at character
61

Yes it does work

template1=# CREATE INDEX profile_master2 on t_a(lower(btrim(email)));
CREATE INDEX
template1=#
template1=# CREATE unique INDEX profile_master3 on t_a(lower(btrim(email)));
CREATE INDEX
template1=#
Regds
Mallah.

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