Question

I’m really stuck here.

e.g past_data table.

name|date      |hour   |data
____________________________________________________________
je  |06/05/2012|1       |32323
je  |06/05/2012|2       |43564
je  |20/05/2102|3       |12334
je  |06/05/2012|4       |123123
je  |13/05/2012|1       |133223

new_table

name|date      |hour   |data
____________________________________________________________
je  |06/05/2012|1       |32323
je  |06/05/2012|2       |43564
je  |20/05/2102|3       |12334
je  |06/05/2012|4       |123123

How do I write a program to find all day matches current day (today is Sunday) from column “date” table “past_date” copy to talbe “new_table”. In the example you can see row with date = 06/05/2012 and 20/05/2012 from past_date table were copied into new_table because those two date are Sundays.

Then to loop this process 13 times (weeks in total) increasing 1 day each time e.g sunday then monday then tuesday so on.

Please help.

Answer 1

You don’t need PLSQL for this,
try this:

INSERT INTO new_table (name, date, hour, data)
  SELECT name, date, hour, data
    FROM past_data
   WHERE to_char(sysdate, 'd') = to_char(date, 'd')

---

UPDATE: I really don’t understand why and what is it good for, but since you asked…

If you use PLSQL then you can do:

BEGIN
  FOR i IN 0 .. 12 LOOP
    INSERT INTO new_table (name, date, hour, data)
      SELECT name, date, hour, data
        FROM past_data
       WHERE to_char(sysdate + i, 'd') = to_char(date, 'd');
  END LOOP;
END;