I'd like to insert content based on a user's last entry within a Data Extension; that is, if a user looked at five products over five days, I want to use the most recent product to insert content. The Data Extension is a transactional DB in that all the records are present - so how do I write the AMPscript to review all the rows but only action on the most recent one?
I'm going with the assumption you have a field in your Data Extension that has a date data type. I'll call it
You'll need to use the LookupOrderedRows AMPscript Function and do something like this:
%%[ SET @rowset = LookupOrderedRows("MYDENAME, 1,"ViewDate Desc","SubscriberKey", SubscriberKey) IF RowCount(@rowset) > 0 THEN SET @productName = FIELD(ROW(@rowset, 1), "ProductName") ENDIF ]%%
I'm looking up the Data Extension and retrieving only 1 row, where the SubscriberKey matches and the latest ViewDate. I'm then creating a variable that will be populated with the Product's name.