Search Postgresql Archives

Re: Function fixing - PostgreSQL 9.2

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Feb 29, 2016 at 2:56 PM, drum.lucas@xxxxxxxxx <drum.lucas@xxxxxxxxx> wrote:

Question:

Payments in a Pending state cannot be invoiced and are excluded from the Invoice Runs section, but they are showing in the count mechanic.

How can I solve this?


​In 9.2 you probably need to convert the count into a conditional sum:

SELECT sum(CASE WHEN <boolean> THEN 1 ELSE 0 END) FROM data;

You can probably do the same with count since it excludes nulls.

SELECT count(NULLIF(invoice_status, 'Pending') FROM invoices;

​9.4 introduced a FILTER clause for Aggregate Expressions that can do this much more cleanly and efficiently.​


David J.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Postgresql Jobs]     [Postgresql Admin]     [Postgresql Performance]     [Linux Clusters]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Postgresql & PHP]     [Yosemite]
  Powered by Linux