How to use variables in Report?

Question

Good Day All,
I am new to PlSql. So please bare with me.
I have a report that runs on SSRS.
Here's what I need it to do:
When the report is executed:
1st of the month : It extracts the previous months data.
16th of the month: Extracts 1st of current month to 15th.
I am trying to use a case statement to find the correct date & then use that value for ReportDate.
ReportDate is a column in the database.
--Find 1st of month
SELECT
CASE
WHEN SYSDATE > last_day(add_months(SYSDATE, -1))
AND SYSDATE < last_day(add_months(SYSDATE, -1))+2
THEN
ReportDate = last_day(add_months(SYSDATE, -2))
ELSE
SYSDATE
END ReportStartDate,
Using 10G.
Again, I'm fairly new to this, so go easy. Let me know if I can provide any other details.

Answer 1

Hi,
Welcome to the forum!
1009545 wrote:
Good Day All,
I am new to PlSql. So please bare with me.Certainly not! This is not that kind of a site!
Did you mean "please *bear* with me"?
I have a report that runs on SSRS.
Here's what I need it to do:
When the report is executed:
1st of the month : It extracts the previous months data.
16th of the month: Extracts 1st of current month to 15th.What if it's run on some other day of the month?
The query below uses looks at the previous month when it is run anytime from the 1st through the 15th of a month, inclusive, and looks at the 1st-15th of the current month when it is run on the 16th or later.
I am trying to use a case statement to find the correct date & then use that value for ReportDate.
ReportDate is a column in the database.
--Find 1st of month
SELECT
CASE
WHEN SYSDATE > last_day(add_months(SYSDATE, -1))ADD_MONTHS (SYSDATE, -1)       will always be some time in the previous month, so
LAST_DAY (ADD_MONTHS (SYSDATE, -1)       will also be in the previous month, but
SYSDATE       is always in the current month, therefore
SYSDATE > ADD_MONTHS (SYSDATE, -1)       will always be TRUE.
AND SYSDATE < last_day(add_months(SYSDATE, -1))+2
THEN
ReportDate = last_day(add_months(SYSDATE, -2))That's 2 months in the past. Are you ever interested in stuff that old? Areen't you always interested either in 1 month ago, or the current month?
ELSE
SYSDATE
END ReportStartDate,
Using 10G.
Again, I'm fairly new to this, so go easy. Let me know if I can provide any other details.Whenever you have a problem, post CREATE TABLE and INSERT statements for a little sample data, and the results you want from that data.
See the forum FAQ {message:id=9360002} It only takes a few minutes to read, and can really help you get the most out of this forum.
I think you want something like this:
WITH     period_of_interest     AS
     SELECT     CASE
              WHEN  TO_CHAR (SYSDATE, 'DD') &lt; '16'
                                       -- should be '16' above.  See note
              THEN  TRUNC ( ADD_MONTHS (SYSATE, -1), 'MONTH')
              ELSE  TRUNC (             SYSDATE    , 'MONTH')
          END     AS period_start
     ,     CASE
              WHEN  TO_CHAR (SYSDATE, 'DD') < '16'
              THEN  TRUNC (SYSDATE, 'MONTH')
              ELSE  TRUNC (SYSDATE, 'MONTH') + 16
          END     AS period_end
     FROM    dual
SELECT     ...
FROM     table_x              x
JOIN     period_of_interest  p  ON  x.transaction_date >= p.period_start
                      AND x.transaction_date <  p.period_end
;Period_end is a slightly misleading name for the column; it's actually the first DATE after the period ends; that's why I used &lt; (and not &lt;=) when comparing it to x.transaction_date.
I'm not sure what ReportDate is in your description. This is one example of shy you need to post CREATE TABLE and INSERT statements for a little sample data. It could be that ReportDate is just what I called transaction_date above.
Edited by: Frank Kulash on Jun 3, 2013 4:55 PM
This site is garbling my code. It seens to think the   in the first
WHEN TO_CHAR (SYSDATE, 'DD') < '16'indicates some kind of markup, and won't display the '16', even if I put it on a separate line by itself.
Edited by: Frank Kulash on Jun 3, 2013 5:09 PM
Used &amp;lt; to correct garbling, after Sentinel below.