Issue with a date field

Question

Hi,
I have a pl/sql page that is the output of a select statement with some conditions.
One of the condition is like:
AND MyColumn between (:P1_MyDateItem - 7 , :P1_MyDateItem)
but as soon as I include an addition or substraction (:P1_datefield - 7) , I get ORA-06550: line 18, column 28: PL/SQL: ORA-00932: inconsistent datatypes: expected DATE got NUMBER
How can I resolve that error?
Also,
I am trying to pass the date field to a second page in a hidden field. In a similar scenario as the one described above, how can I manipulate the date using the hidden field. ie. in my testing, I think it kind of converts the "date" into "char' format?? can I also do the same manipulation "Date-7" but this time using a hidden field instead?
Thanks

Answer 1

FabioBui wrote:
but as soon as I include an addition or substraction (:P1_datefield - 7) , I get ORA-06550: line 18, column 28: PL/SQL: ORA-00932: inconsistent datatypes: expected DATE got NUMBER
How can I resolve that error?Try converting it to a date first
to_date(:P1_datefield, <date_format>)-7
I am trying to pass the date field to a second page in a hidden field. In a similar scenario as the one described above, how can I manipulate the date using the hidden field. ie. in my testing, I think it kind of converts the "date" into "char' format?? can I also do the same manipulation "Date-7" but this time using a hidden field instead? Yes, if that's what you want to do. A date field is just a text box, made nicer with the jQuery Date Picker.
so date picker:
<input type="text" value="12/14/2011" />
to a hidden item
<input type="hidden" value="12/14/2011" />
only difference being the display type.
Just remember to convert it to a date in your pl/sql code.