How can we reduce this to single query???

Question

I need record from table1 where field matches the data of other table OR belongs to some date.
Select field
   from table1
   into table result1
   where ldate = p_date.
Select field
   from table1
   into table result2
   for all entires in table2
   where field1 = table2-field1
Loop at result1.
   result-field = result1-field.
  append result.
Endloop.
Loop at result2.
   result-field = result2-field.
  append result.
Endloop.
Please suggest.

Answer 1

Your code is not identical to the original code, simply write
Select
           from table1
            for all entries in table2
           Where field1 = table2-field
           OR date = p_date.
Performancewise this might not be optimal, if you select many data, as the two conditions can be overlapping.
If so then your original solution has duplicate entries while the lower has no duplicates.
Siegfried