Question

select case when cntrctr_lcns_seq_no is null
                                   then 1
                                   else max(cntrctr_lcns_seq_no)
                                   end as cntrctr_lcns_seq_no
                                   from nuwmsweb.cntrctr_lcns_info
                                    where third_party_id = thirdPartyId
                                    group by third_party_id

I think you an see what i’m trying to do. Get the max seq_no for a specific id. But I get the error “not a single group group clause”.

This select statement is part of a larger insert.

Thanks!

update: this is the whole statement

insert into nuwmsweb.CNTRCTR_LCNS_INFO
    (third_party_id,cntrctr_lcns_seq_no,cntrctr_lcns_no,
    lcns_st_cd,certfn_level_type_cd,cntrctr_type_cd,cut_tap_authy_ind,
    stat_type_nm)
    VALUES(thirdPartyId,(select max(case when cntrctr_lcns_seq_no is null
                                   then 1
                                   else cntrctr_lcns_seq_no
                                   end) as cntrctr_lcns_seq_no
                                   from nuwmsweb.cntrctr_lcns_info
                                    where third_party_id = thirdPartyId
                                    group by third_party_id
                                    ),
          licenseNumber,licenseState,licenseLevel,licenseType,cutTap,status);

Answer 1

The max aggregate function will ignore null values, so you don’t need the case statement or the group by as you want the max over the entire returned set.

select
    coalesce(max(cntrctr_lcns_seq_no), 1) as cntrctr_lcns_seq_no
from nuwmsweb.cntrctr_lcns_info
where third_party_id = thirdPartyId