On 1 March 2016 at 11:35, David G. Johnston <david.g.johns...@gmail.com> wrote:
> On Mon, Feb 29, 2016 at 2:56 PM, drum.lu...@gmail.com < > drum.lu...@gmail.com> 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. > > http://www.postgresql.org/docs/9.4/static/sql-expressions.html > > David J. > > Thank you David... Can you please show me how it would be with the new changes? Thanks
