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Sounds like you are trying to calculate your column headings.
Let's say your first shipment date was 2014-08-20. And you want the
headings for 53 columns beginning with the Monday of that date.
To calculate the first Monday would be like this actual working sql
statement:
values date('2014-08-20') - (dayofweek_iso('2014-08-20') - 1) days
For imbedded sql you can do a VALUES INTO ColHeading(1)
Once you know that date it's quite simple to calculate the rest of the 53
columns:
for x = 2 to 53;
ColHeading(x)=ColHeading(1) + ((x-1) * 7) days;
EndFor;
Rob Berendt
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