Question

Qe : 1)

select 
  a.finishproductid 
from 
  tblt_invoiceorderitems a, tblm_invoiceorder b 
where 
  b.invoiceorderdate <= 'Current Date' and 
  a.invoiceorderid = b.invoiceorderid 

— it has more than 16k records.

Qe : 2 )

select jobcardid, stockcode 
from tblm_finishproduct 
where productionentrydate <= 'Current Date'

— it has also more than 16k Record.

Now i Want From 2nd Query not in first query.

select jobcardid, stockcode 
from 
  tblm_finishproduct 
where 
  productionentrydate <= 'CurrrntDate' and 
  finishproductid not in 
  (
    select 
      a.finishproductid 
    from 
      tblt_invoiceorderitems a, tblm_invoiceorder b 
    where 
      b.invoiceorderdate <= 'CurrrntDate' and 
      a.invoiceorderid = b.invoiceorderid
  );

Now its taking a time

Answer 1

This does not address your question, but you should not be using a.invoiceorderid = b.invoiceorderid in your where clause–try this query in place of the first one. Natural join is more efficient than making a cross product of the entire table and selecting only those rows that match.

select a.finishproductid 
from tblt_invoiceorderitems a 
natural join tblm_invoiceorder b 
where b.invoiceorderdate <= 'Current Date'