Bug #730: cannot create functional index

Vadim Grepan (kezal@mail.ru) reports a bug with a severity of 3
The lower the number the more severe it is.

Short Description
cannot create functional index

Long Description
I've tried to create functional index like
that:
=== cut ===
db=> CREATE INDEX NDX_FNC_TBL_TRAFBYTES__DATE ON tbl_trafbytes (date (date_trunc ('day', trafbytes_date)));
ERROR:  parser: parse error at or near "("
=== cut ===

Column trafbytes_date define as
=== cut ===
 trafbytes_date    | timestamp without time zone | not null
=== cut ===

Does it means that PostgreSQL funcional indexes support only simplest fucntions like lower ()?


Sample Code


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