numeric to text (7.3)

template1=# select text(2.000::numeric);
text
-------
2.000
(1 row)

The text(numeric) function doesn't round numbers. :(

This is bug or feature? :)

I'd say feature in that it doesn't reduce the precision of the number.

--
Rod Taylor <rbt@rbt.ca>

PGP Key: http://www.rbt.ca/rbtpub.asc

On Mon, Dec 02, 2002 at 01:35:47PM -0500, Rod Taylor wrote:

template1=# select text(2.000::numeric);
text
-------
2.000
(1 row)

The text(numeric) function doesn't round numbers. :(

This is bug or feature? :)

I'd say feature in that it doesn't reduce the precision of the number.

... and, of course, you can round with:

joel@joel=# select round('2.000'::numeric);
round
-------
2
(1 row)

joel@joel=# select round('2.000'::numeric,2);
round
-------
2.00
(1 row)

--

Joel BURTON | joel@joelburton.com | joelburton.com | aim: wjoelburton
Independent Knowledge Management Consultant

On Mon, 2 Dec 2002, Joel Burton wrote:

joel@joel=# select round('2.000'::numeric);
round
-------
2
(1 row)

joel@joel=# select round('2.000'::numeric,2);
round
-------
2.00
(1 row)

OK, but:

template1=# select round('2.001'::numeric);
round
-------
2
(1 row)

template1=# select round('2.001'::numeric,2);
round
-------
2.00
(1 row)

The good idea (in 7.2):

template1=# select text('2.000'::numeric);
text
------
2
(1 row)

template1=# select text('2.001'::numeric);
text
-------
2.001
(1 row)

This feature is missing from 7.3..

(new round function is good idea (e.g. fround(numeric))

-Sygma

This feature is missing from 7.3..

(new round function is good idea (e.g. fround(numeric))

double precision | pg_catalog | round | double precision
numeric | pg_catalog | round | numeric
numeric | pg_catalog | round | numeric, integer

Looks like round still exists to me.

rbt=# select round('2.4555', 2);
round
-------
2.46
(1 row)

--
Rod Taylor <rbt@rbt.ca>

PGP Key: http://www.rbt.ca/rbtpub.asc

On Mon, Dec 02, 2002 at 08:23:24PM +0100, Szima G�bor wrote:

OK, but:

template1=# select round('2.001'::numeric);
round
-------
2
(1 row)

template1=# select round('2.001'::numeric,2);
round
-------
2.00
(1 row)

The good idea (in 7.2):

template1=# select text('2.000'::numeric);
text
------
2
(1 row)

template1=# select text('2.001'::numeric);
text
-------
2.001
(1 row)

This feature is missing from 7.3..

Not sure I'd call it a feature -- ISTM that text(numeric) should show
all the precision you gave it, and not shave it down to the
least-precise number that is still equal.

Anyhoo, you can get what you want with some ugly-but-straightforward
trimming:

(in 7.3):

joel@joel=# select rtrim(rtrim('2.000'::numeric, '0'),'.');
rtrim
-------
2
(1 row)

joel@joel=# select rtrim(rtrim('2.001'::numeric, '0'),'.');
rtrim
-------
2.001
(1 row)

Easy enough to make this into a function trim_as_much(numeric) or
somesuch.

--

Joel BURTON | joel@joelburton.com | joelburton.com | aim: wjoelburton
Independent Knowledge Management Consultant

On Mon, 2 Dec 2002, Rod Taylor wrote:

double precision | pg_catalog | round | double precision
numeric | pg_catalog | round | numeric
numeric | pg_catalog | round | numeric, integer

Looks like round still exists to me.

Rod, you don't understand me. :)

I needn't round, or the valueless zeroes too.

It's good (in older version of pSQL):
2.000::numeric -> 2
2.001::numeric -> 2.001

It's "ugly" (in 7.3):
2.000::numeric -> 2.000
2.001::numeric -> 2.001
or
round(2.000::numeric,2) -> 2.00
round(2.001::numeric,2) -> 2.00

Joel had got a good idea:

joel@joel=# select rtrim(rtrim('2.000'::numeric, '0'),'.');
rtrim
-------
2
(1 row)

.. but i prefer the old text(numeric) function :)

Thanks!

-Sygma