I think it's only a syntax problem :
to_timestamp('null','yyyy-MM-ddhh24:mi:ss')::TIMESTAMP
In this form your 'null' parameter is a text which dont match for your
definition, so the function is waiting for an integer representing the
year and fails.
But if you write :
to_timestamp(null,'yyyy-MM-ddhh24:mi:ss')::TIMESTAMP
the function return a NULL value.
Hope it helps.
Le 31/08/2013 07:19, Technical Doubts a écrit :
>
> Dear Team,
>
> I have a table with name registers_info with below columns
>
> regid character varying,
> transid bigint,
> regdate timestamp without time zone,
> canceldate timestamp without time zone
>
>
> insert into registers_info (regid,transid,regdate,canceldate) values
> ('reg1',1,to_timestamp('2013-07-24','yyyy-MM-dd
> hh24:mi:ss')::TIMESTAMP,to_timestamp('null','yyyy-MM-dd
> hh24:mi:ss')::TIMESTAMP);
>
> The above query works fine in Postgres 8.3 version.
>
> But the same query when executed in postgres 9.2 its throwing below error
>
> ERROR: invalid value "null" for "yyyy"
> Detail: Value must be an integer.
>
> From application, this cancel date might have values or it may come as null.
>
> Kindly suggest. Thanks in advance.
>
>
> --
> John
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