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Loop Through Date and Create QVD

Hi everyone,

This is probably a simple concept but I am not all that familiar with loops.  Basically I have the following in a table, say with a date from 01/01/2013 through today 10/30/2014.


Data:

Reported_Date, Value

01/01/2013, 1.5

...

06/30/2014, 1.2

...

10/30/2014, 1.8

I would like to loop through and create a QVD for each date from 06/30/2014 and forward.  What's the best way to do this?

Thanks!

Tags (5)
5 Replies

Re: Loop Through Date and Create QVD

The logic must be something like:

For i = 1 to number of rows of the table (Look for NoofRows() function)

     LET myDate=Peek(myDateField,$(i));

     MYTAB:

     noconcatenate

     Select * from MyTable where myDateField = $(myDate);

     Store * from MYTAB INTO mytab_$(myDate).qvd;

     drop table MYTAB;

Next

Let me know

Not applicable

Re: Loop Through Date and Create QVD

Hello Mark, Please find the below:

LOAD Reported_Date, Value From source_table :

LET vRows =

FOR i=1 to  FieldValueCount('Reported_Date')

    LET vDate = FieldValue( 'Reported_Date', $(i) );

   QVDNAME_$(vDate):

   LOAD * FROM ..(ur statement)

   STORE QVDNAME_$(vDate) FROM QVDNAME_$(vDate).qvd (qvd) ;

   DROP Table QVDNAME_$(vDate):    

Next

Not applicable

Re: Loop Through Date and Create QVD

Hi Alessandro - thanks for your response.  I receive the following errors and am not sure why. It appears QV is having trouble understanding the variable $(vDate) in the where clause. 

Field not found - <=>

MyTable:

NoConcatenate

LOAD * RESIDENT Data where [REPORTED_DATE]=

---------------------------------

For i = 1 to NoOfRows(Data)

LET vDate=Peek([REPORTED_DATE],$(i));

MyTable:

NoConcatenate

LOAD * RESIDENT Data where [REPORTED_DATE]=$(vDate);

Store MyTable into [DailyStats_$(vDate).qvd](qvd);

Drop Table MyTable;

Next

vinay_bangari
Valued Contributor III

Re: Loop Through Date and Create QVD

use peek function.

Re: Loop Through Date and Create QVD

try with

For i = 1 to NoOfRows(MyTable)


verify (with a text box that NoOfRows(MyTable) returns the right number

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