Re: Migration from DB2 to PostgreSQL-TIMESTAMP(arg1,arg1)

From: sachin kotwal <kotsachin(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Migration from DB2 to PostgreSQL-TIMESTAMP(arg1,arg1)
Date: 2013-06-28 04:30:53
Message-ID: 1372393853411-5761628.post@n5.nabble.com
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>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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