Error ORA-01858: a non-numeric character was found where a numeric was expected when running query

Question

01858: a non-numeric character was found where a numeric was expected

select project_name, my_date, sum(records_number) as 
from (
select project_name, 
  case 
    when :P33_RG = 'Daily' then
      to_char(date_sys, 'MM/DD/YYYY') 
    when :P33_RG = 'Weekly' then
      to_char(TRUNC(date_sys, 'IW'), 'MM/DD/YYYY')
  end as my_date,  
  BATCH.RECORDS_NUMBER
from BATCH
where date_sys between :P33_START_DATE and :P33_END_DATE
) my_records
group by project_name, my_date
;

:P33_START_DATE and:P33_END_DATE are have values of dates from a datepicker and:P33_RG is a varchar.

any advice to fix the error would be appreciated! Thank you

Answer 1

I'd say that you should "convert" date picker values into DATE datatype, using appropriate format model. If it follows what you already posted, that would be

       WHERE date_sys BETWEEN TO_DATE ( :P33_START_DATE, 'mm/dd/yyyy')
                          AND TO_DATE ( :P33_END_DATE  , 'mm/dd/yyyy')