Re: Changing Data Types
| От | Mike Frost |
|---|---|
| Тема | Re: Changing Data Types |
| Дата | |
| Msg-id | DUB127-W93405B915C0FA12BA7E94E82540@phx.gbl обсуждение исходный текст |
| Ответ на | Re: Changing Data Types (Thom Brown <thom@linux.com>) |
| Ответы |
Re: Changing Data Types
Re: Changing Data Types |
| Список | pgsql-novice |
thanks man!
so the syntax in [fielname]::[datatype]?
From: thom@linux.com
Date: Mon, 7 Sep 2015 11:27:46 +0100
Subject: Re: [NOVICE] Changing Data Types
To: m_frost2010@hotmail.com
CC: tgl@sss.pgh.pa.us; pgsql-novice@postgresql.org
From: thom@linux.com
Date: Mon, 7 Sep 2015 11:27:46 +0100
Subject: Re: [NOVICE] Changing Data Types
To: m_frost2010@hotmail.com
CC: tgl@sss.pgh.pa.us; pgsql-novice@postgresql.org
On 7 September 2015 at 11:20, Mike Frost <m_frost2010@hotmail.com> wrote:
Hi All,This REALLY is a novice questionI'm writing a simple query where i need to return [Field A]/[Field B] so i can express [Field A] as a percentageBoth of these fields are BigInts, so i always get 0What do i need to do to the data types in my query to enable decimal places?
You can cast at least one of them to numeric:
postgres=# SELECT 7::int / 10::int;
?column?
----------
0
(1 row)
postgres=# SELECT 7::numeric / 10::int;
?column?
------------------------
0.70000000000000000000
(1 row)
postgres=# SELECT 7::int / 10::int;
?column?
----------
0
(1 row)
postgres=# SELECT 7::numeric / 10::int;
?column?
------------------------
0.70000000000000000000
(1 row)
Thom
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