> 原文:[https://www . geesforgeks . org/is numeric-and-is null-function in-ms-access/](https://www.geeksforgeeks.org/isnumeric-and-isnull-function-in-ms-access ...

The ISNULL function in Google BigQuery is used to check if a value is null. It returns true if a value is null and false if a value is not null.