RE: Which records aren't in list? Use static list as table or records

[Patrick FICHE <Patrick.Fiche@xxxxxxxxxxx>]

Hi,

 

May be something like this could help

 

SELECT TestList.id

FROM ( SELECT * FROM ( VALUES( 1 ), (5), (12), (33), (55) ) t ) AS TestList( id )

    LEFT OUTER JOIN idList ON IdList.id = TEstList.id

WHERE IdList.Id IS NULL;

 

 

Patrick Fiche

Database Engineer, Aqsacom Sas.

c. 33 6 82 80 69 96

 

 

From: Durumdara <durumdara@xxxxxxxxx>
Sent: Wednesday, May 22, 2019 3:43 PM
To: Postgres General <pgsql-general@xxxxxxxxxxxxxx>
Subject: Which records aren't in list? Use static list as table or records

 

Hi!

 

A very silly question. I have a limited list of identifiers.

I want to know which one IS NOT in a table.

 

The

select * from theserecords where id not in (1, 5, 12, 33, 55)

isn't listing missing records... because they are missing... :-)

 

For example, a pseudo:

idlist = (1, 5, 12, 33, 55)

select id from idlist

where id not in (select id from theserecords)

 

The id list is a static string.

 

Now I can do this with temporary table - I create one, insert the ID-s and run the select:

 

select id from temptable where id not in (select id from theserecords)

 

It would be nice if I can get the missing ID-s.

 

F.e:

 

select id from (

   select 1 as id, 

   select 5 as id,   

   ...

) where id not in (select id from theserecords)

 

or

select id from (
  select split_string_to_records('1,2,3,4,5', ',') as id

) ...

 

Do you know any simple way to do this without stored proc or temp table?

 

Thank you!

 

B.W:

    dd