SQL lets you use one command to quickly create a new table containing a subset of records from a larger table while working in Access. Sound complicated? It's not, as Mary Ann Richardson shows us.

SQL Server throws a wobbly when one tries to declare/create the same-named temporary table more than once in the same procedure - I guess the query analyser assumes that all temp table creations ...

SQL Server 2016 and Azure SQL Database both give you tables that automatically keep track of the history of your data. Here's how to retrieve that historical data. In an earlier column, I showed how ...

SQL para hacer cálculos sobre filas de la misma tabla en PC › Software libreQuiero que mi consulta saque la alarma, el instante de generación, y la DURACIÓN que dicha alarma está activa. Si ...