Re: postgres function - Mailing list pgsql-general

From Ramesh T
Subject Re: postgres function
Date
Msg-id CAK8Zd=sjgb_GrNa4xFY0AaFt3_O=65AN-4sm8YvHU4DoXZGYmg@mail.gmail.com
Whole thread Raw
In response to Re: postgres function  ("David G. Johnston" <david.g.johnston@gmail.com>)
List pgsql-general
yes David gave correct solution

but , the value I'm using  and  it's column in the table sometimes value  may be '123-987-123' or '123-987-123-13-87'

if pass like below must return else condiion 0,



select case when select split_part('123-987-123','-',4) >0
then 1 else 0 end 
it's return error like integer need...



On Thu, Oct 15, 2015 at 8:50 PM, David G. Johnston <david.g.johnston@gmail.com> wrote:
On Thu, Oct 15, 2015 at 10:05 AM, Ramesh T <rameshparnanditech@gmail.com> wrote:
'123-987-123' it is not fixed some times it may be '1233-9873-123-098'
as you said it's fixed,

changes the values in middle of the -

sometimes times i need 1233 and 098 or 9873,first position  i'll find direct for second variable we don't know where it's end with -

i.e ,
i need to find second postition of the variable between the '-'
​​ 
 
​While I and others are likely inclined to provide you a working solution to do so you need to state your data and requirement more clearly.​  Given the apparent language dynamic I'd suggest supplying 5-10 example data values along with their expected result.

​Otherwise, regular expressions almost certainly will let you solve your problem (though, like Joe Conway indicated, split_​part may be possible) once you learn how to construct them.  regexp_matches(...) is the access point to using them.

David J.


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