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Editorial Team
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Asked: 2026-05-24T11:29:26+00:00

i have a query returning user actions with action date , howeever , I

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i have a query returning user actions with action date , howeever , I want my query to return all the actions with their dates but return null for the action date when the date equals the previous date , for example

action                date
gone shopping         10/1/2011
swimming              10/1/2011
riding                11/1/2011

so i want my select to return rows like this
action                date
gone shopping         10/1/2011
swimming              NULL
riding                11/1/2011

anyone has an idea to implement this?

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1 Answer

  1. Editorial Team

    This sounds like a situation where you would want this aesthetic logic handled in the application layer, not the database layer.

    It could cause issues if you change the order of records, or something downstream adds additional logic like a GROUP BY.

    It is generally a bad idea to remove data without a reason. You will be effectively uncoupling the action from the date for any other process that consumes your data downstream.

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