Wise Owl Answers - How do I refer to the previous column in a matrix in SSRS? 

By Andrew Gould
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The video explains how to use the Previous function to compare columns in a matrix with the previous column or group.
Chapters
00:00 The Question and Basic Setup
03:00 Referring to the Previous Row or Column
05:00 Comparing a Column with the Previous Column
05:57 Excluding Blank Values
08:11 Adding a Second Column Group
09:36 Changing the Scope of the Previous Function
11:10 Adding Conditional Formatting
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