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* function to_char
@ 2021-04-17 15:03 Fontana Daniel C. (Desartec S.R.L.) <desartecsrl@gmail.com>
2021-04-17 15:09 ` Re: function to_char Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 2+ messages in thread
From: Fontana Daniel C. \(Desartec S.R.L.\) @ 2021-04-17 15:03 UTC (permalink / raw)
To: pgsql-bugs@lists.postgresql.org
Hi, using postgres 12.5.
The to_char function has a problem with format length.
Example, select length (to_char (1, '990'))
returns 4 because?
if the format has length 3?
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* Re: function to_char
2021-04-17 15:03 function to_char Fontana Daniel C. (Desartec S.R.L.) <desartecsrl@gmail.com>
@ 2021-04-17 15:09 ` Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 0 replies; 2+ messages in thread
From: Tom Lane @ 2021-04-17 15:09 UTC (permalink / raw)
To: Fontana Daniel C. \(Desartec S.R.L.\) <desartecsrl@gmail.com>; +Cc: pgsql-bugs@lists.postgresql.org
"Fontana Daniel C. \(Desartec S.R.L.\)" <desartecsrl@gmail.com> writes:
> Example, select length (to_char (1, '990'))
> returns 4 because?
Per the fine manual:
* If no explicit provision is made for a sign in to_char()'s pattern,
one column will be reserved for the sign, and it will be anchored to
(appear just left of) the number. If S appears just left of some
9's, it will likewise be anchored to the number.
If you don't want to leave space for a sign, it looks like FM is
the only way to do that.
regards, tom lane
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2021-04-17 15:03 function to_char Fontana Daniel C. (Desartec S.R.L.) <desartecsrl@gmail.com>
2021-04-17 15:09 ` Tom Lane <tgl@sss.pgh.pa.us>
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