Replacing DAX PathContains With OR

Chris Koester shows the performance benefits of replacing the PathContains function in DAX with a simple OR operator:

This post shows how you can generate optimized multi-value DAX parameters in SSRS and achieve greater performance compared to the DAX PathContains function. This will be a short post that provides the SSRS expression to convert multiple SSRS parameters into a double-pipe delimited string for use in a DAX query. In other words, the goal is to use the DAX OR operator (||) instead of the PathContains function. I’m assuming the reader has experience with SSRS, so not all steps will be shown.

Read on for the example, which ended up being a 16X performance improvement.

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