>I've done something weird:
>CREATE OR REPLACE FUNCTION "timestamp"(_date date, _time time) RETURNS
timestamp AS $$
>SELECT _date + _time;
>$$ LANGUAGE sql;
>SELECT "timestamp"('2013-01-01'::date, '12:00:00'::time);
Good one.
function with above definition is already present in pg_catalog. so no need
to define new function.(3 rd row)
\df timestamp
List of functions
Schema | Name | Result data type | Argument
data types | Type
------------+-----------+-----------------------------+--------------------------------------+--------
pg_catalog | timestamp | timestamp without time zone | abstime
| normal
pg_catalog | timestamp | timestamp without time zone | date
| normal
pg_catalog | timestamp | timestamp without time zone | date, time without
time zone | normal
pg_catalog | timestamp | timestamp without time zone | timestamp without
time zone, integer | normal
pg_catalog | timestamp | timestamp without time zone | timestamp with time
zone | normal
(5 rows)
But why this function requires "" to get execute.
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