Using more than one BETWEEN operator in a single filter string results in what?

The use of multiple BETWEEN operators in a single filter string is not syntactically valid in many query languages and systems. The BETWEEN operator is designed to evaluate whether a value falls within a specific range, defined by two boundary values. However, attempting to combine multiple BETWEEN clauses without proper logical connectors (like AND or OR) leads to a syntax error. This is because each BETWEEN clause is expected to have its own complete expression, and combining them improperly results in a structure that the system cannot parse.

Understanding this concept is crucial as it affects how queries are constructed and executed in database management and data retrieval contexts. Properly structuring filter conditions allows for successful searches to retrieve the necessary data. In contrast, using improper syntax hampers the process and generates errors that prevent the query from running as intended.