Microsoft Excel's Data Validation tool lets you add a drop-down list to a cell based on existing data in a column. However, how this works depends on whether the source data is part of a formatted ...

That being the case, you’ll need a couple additional columns of datetime2 data type, the VALIDFROM and VALIDTO columns, which tells SQL Server which snapshot of the temporal table to use when querying ...

We’ll use data validation to prevent duplicate numbers in the Membership Number column. First, enter the following function into cell K3: =COUNTIF(Table1[Membership Number],B3) ...