Using loop varibale in UPDATE statement

Question

begin
for i in 1..31 loop
Update od_ebh_shift_schedule
Set i='Test'
where year=2010 and i='W' ;
end loop;
end;}
Here "i" is the column such as 01,02,03....31 in the table called od_ebh_shift_schedule
FYI-->Column type is varchar2
I want the column get updated as 'Test' when it is 'W', Kindly help he me with this

Answer 1

Hi,
Yes, typo. Sorry.
And if your table columns have some prefix, PL/SQL might look something like this
DECLARE
l_sql VARCHAR2(32700);
l_col VARCHAR2(255);
BEGIN
  FOR i IN 1 .. 31
  LOOP
    IF i < 10 THEN
      l_col := '0' || i;
    ELSE
      l_col := i;
    END IF;
    l_sql :=
      'UPDATE od_ebh_shift_schedule SET '
      || l_col
      || ' = ''Test'' WHERE year = 2010 AND '
      || l_col || ' = ''W'''
    EXECUTE IMMEDIATE l_sql;
  END LOOP;
END;But I just guess as OP do not provide details
Regards,
Jari