Learn how to check, replace, compare, and aggregate NULL values in a database query using common techniques and examples.

Environment Python: 3.7.0 64-bit pyodbc: 4.0.23 OS: Windows 10 Professional DB: SQL Server 2017 driver: ODBC Driver 11/13/17 for SQL Server; SQL Server Native Client 11.0 Issue When doing a single ...

In SQL we support non-standard clause called ON CONFLICT / OR. It is not a separate clause which can appear in INSERT/UPDATE statements or as a column option in CREATE TABLE statements. See examples ...

Null values indicate that data is missing or unknown, and if you don't take steps to handle them, you could wind up with runtime errors or erroneous data. These Access pointers will help you ...

Don't let Null values derail your formulas. See how to use the NZ function to convert the values to zeroes.