This question was answered, 4 months ago. If your problem is different, start a new topic, provide full information as to the problem (i.e. where the data is), example data/output if useful.
Personally I avoid using this scenario where "data" - in this case quarters, is used in names of datasets and one of the resons behind that is to avoid this whole need to know issues. If you have a master data table, and update that, and it has quarter information, it is simple to code with, and you can pull out any required information.
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