Ernst Molitor (molitor@uni-bonn.de) reports a bug with a severity of 3
The lower the number the more severe it is.
Short Description
create index ... (date_part('year', d)) fails
Long Description
IMHO, creation of an index on a part of a date field should work,
but it fails due to the definition of "create index ..." in gram.y.
Maybe I'm wrong, but I feel that for large tables which will have to be analyzed per year, an index of this kind could
bean advantage.
Sample Code
-- the table
create table test (d date);
-- partial indices:
create index d_year on test (date_part('year', d));
-- fails with: ERROR: parser: parse error at or near "'"
create index d_year on test (extract(year from d));
-- fails with: ERROR: parser: parse error at or near "("
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