For what purpose is the 'ToBoolean' function used in the context of queries?

The 'ToBoolean' function is utilized in queries primarily to determine if a particular condition, often based on numerical or string values, meets a defined threshold. This function converts its input into a boolean value—either true or false—based on the criteria specified. For instance, if the input is a numerical value that exceeds a certain threshold, 'ToBoolean' would return true, indicating that the condition has been met. This capability is essential in queries where logic branching requires a true or false evaluation to guide data processing or decision-making processes.

In contrast, the other options refer to different functionalities that do not align with the primary use of the 'ToBoolean' function. Converting numbers to their negative values, calculating averages, and creating time constants represent distinctly separate operations that do not involve transforming values into boolean logic or checking against thresholds.