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Lag (DMX)

Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).

Returns the time slice between the date of the current case and the last date of the training set.

A scalar value of the type integer.

If the Lag function is used on a model where the KEY TIME column is located within a nested table, the function must be located within the sub-select of the statement.

The following example returns cases that fall within the last 12 months of the data that was used to train the model.

SELECT * FROM [Forecasting].CASES
WHERE Lag() < 12
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