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The Columns Deck is where you drag fields you wish to add as columns to the view. Any number of items (Dimensions, Measures, Parameters) can be dragged into the Columns Deck to create a View.
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The Rows Deck is where you drag fields you wish to display as a row in your view. Any number of items (Dimensions, Measures, Parameters) can be placed in the Row Deck to create a View.
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