Thread: devide and summarize sql result (all)
Hi, My sql query results sth. like this: user percentage franz 78% smith 98% franz 81% jason 79% smith 89% smith 85% smith 99% Now I'd like to summarize the percentages oder every user like this. smith 2 matches 95-100% 2 matches 85-95% 0 mathes 75-85% franz 0 mathes 95-100% ... Hope there is someone who can help me Janek Sendrowksi
On Thu, Aug 15, 2013 at 1:51 PM, Janek Sendrowski <janek12@web.de> wrote:
Hi,
My sql query results sth. like this:
user percentage
franz 78%
smith 98%
franz 81%
jason 79%smith 89%smith 85%smith 99%Now I'd like to summarize the percentages oder every user like this.smith2 matches 95-100%2 matches 85-95%0 mathes 75-85%franz0 mathes 95-100%...
A CASE statement should work, if you are willing to hard-code the list of expressions.
SELECT username,
sum(case when avg between 76 and 85 then 1 else 0 end) as "76 to 85",
sum(case when avg between 86 and 95 then 1 else 0 end) as "86 to 95",
sum(case when avg > 95 then 1 else 0 end) as ">95"
FROM yourtable
GROUP BY username
SELECT username,
sum(case when avg between 76 and 85 then 1 else 0 end) as "76 to 85",
sum(case when avg between 86 and 95 then 1 else 0 end) as "86 to 95",
sum(case when avg > 95 then 1 else 0 end) as ">95"
FROM yourtable
GROUP BY username
Hi Janek,
--
You can try:
=# SELECT name, perc/5*5 || '-' || perc/5*5+5 AS range, count(*) as matches FROM test GROUP BY name, perc/5 ORDER BY perc/5;
name | range | matches
-------+--------+---------
franz | 75-80 | 1
jason | 75-80 | 1
franz | 80-85 | 1
smith | 85-90 | 2
smith | 95-100 | 2
(5 rows)
Beena Emerson
<div style="font-family: Verdana;font-size: 12.0px;"><div><div>Thanks for your Answers,</div><div> </div><div>my problemis, that there is no column with the name 'percentage'.</div><div>It's just a result of my query. So how can I useit anyway?</div><div>Should I just store the result in a record variable and do another query?</div><div> </div><div>Janek</div><div> <div name="quote" style="margin:10px 5px 5px 10px; padding: 10px 0 10px 10px;border-left:2px solid #C3D9E5; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><divstyle="margin:0 0 10px 0;"><b>Gesendet:</b> Freitag, 16. August 2013 um 00:24 Uhr<br /><b>Von:</b> bricklen<bricklen@gmail.com><br /><b>An:</b> "Janek Sendrowski" <janek12@web.de><br /><b>Cc:</b> "pgsql-general@postgresql.org"<pgsql-general@postgresql.org><br /><b>Betreff:</b> Re: [GENERAL] devideand summarize sql result (all)</div><div name="quoted-content"><div><div class="gmail_extra"><div class="gmail_quote">OnThu, Aug 15, 2013 at 1:51 PM, Janek Sendrowski <span><<a href="janek12@web.de" target="_parent">janek12@web.de</a>></span>wrote: <blockquote class="gmail_quote" style="margin: 0.0px 0.0px 0.0px 0.8ex;border-left:1.0px solid rgb(204,204,204);padding-left: 1.0ex;"><div><div style="font-family: Verdana;font-size: 12.0px;"><div>Hi,<br/> <br /> My sql query results sth. like this:<br /> <br /> user percentage<br /> franz 78%<br /> smith98%<br /> franz 81%<br /> jason 79%</div><div>smith 89%</div><div>smith 85%</div><div>smith 99%</div><div> </div><div>NowI'd like to summarize the percentages oder every user like this.</div><div>smith</div><div>2matches 95-100%</div><div>2 matches 85-95%</div><div>0 mathes 75-85%</div><div> </div><div>franz</div><div>0mathes 95-100%</div><div>...</div></div></div></blockquote></div></div><divclass="gmail_extra">A CASE statement should work, ifyou are willing to hard-code the list of expressions.<br /><br /> SELECT username,<br /> sum(case when avg between76 and 85 then 1 else 0 end) as "76 to 85",<br /> sum(case when avg between 86 and 95 then 1 else 0 end) as"86 to 95",<br /> sum(case when avg > 95 then 1 else 0 end) as ">95"<br /> FROM yourtable<br /> GROUP BYusername</div><div class="gmail_extra"> </div></div></div></div></div></div></div>
Hello,
Use a view
Regards
From: Janek Sendrowski <janek12@web.de>
To: pgsql-general@postgresql.org
Sent: Friday, August 16, 2013 11:55 AM
Subject: Re: [GENERAL] devide and summarize sql result (all)
Use a view
Regards
From: Janek Sendrowski <janek12@web.de>
To: pgsql-general@postgresql.org
Sent: Friday, August 16, 2013 11:55 AM
Subject: Re: [GENERAL] devide and summarize sql result (all)
Thanks for your Answers,
my problem is, that there is no column with the name 'percentage'.
It's just a result of my query. So how can I use it anyway?
Should I just store the result in a record variable and do another query?
Janek
Gesendet: Freitag, 16. August 2013 um 00:24 Uhr
Von: bricklen <bricklen@gmail.com>
An: "Janek Sendrowski" <janek12@web.de>
Cc: "pgsql-general@postgresql.org" <pgsql-general@postgresql.org>
Betreff: Re: [GENERAL] devide and summarize sql result (all)
Von: bricklen <bricklen@gmail.com>
An: "Janek Sendrowski" <janek12@web.de>
Cc: "pgsql-general@postgresql.org" <pgsql-general@postgresql.org>
Betreff: Re: [GENERAL] devide and summarize sql result (all)
On Thu, Aug 15, 2013 at 1:51 PM, Janek Sendrowski <janek12@web.de> wrote:
Hi,
My sql query results sth. like this:
user percentage
franz 78%
smith 98%
franz 81%
jason 79%smith 89%smith 85%smith 99%Now I'd like to summarize the percentages oder every user like this.smith2 matches 95-100%2 matches 85-95%0 mathes 75-85%franz0 mathes 95-100%...
A CASE statement should work, if you are willing to hard-code the list of expressions.
SELECT username,
sum(case when avg between 76 and 85 then 1 else 0 end) as "76 to 85",
sum(case when avg between 86 and 95 then 1 else 0 end) as "86 to 95",
sum(case when avg > 95 then 1 else 0 end) as ">95"
FROM yourtable
GROUP BY username
SELECT username,
sum(case when avg between 76 and 85 then 1 else 0 end) as "76 to 85",
sum(case when avg between 86 and 95 then 1 else 0 end) as "86 to 95",
sum(case when avg > 95 then 1 else 0 end) as ">95"
FROM yourtable
GROUP BY username