What operators do query expressions utilize to combine fields and constants?

Query expressions use logical and comparison operators to combine fields and constants effectively. Logical operators, such as AND, OR, and NOT, allow for the combination of multiple criteria in a way that can filter data based on complex conditions. Comparison operators, like equal to (=), not equal to (<>), greater than (>), less than (<), and others, facilitate the direct comparison of field values against constants to yield true or false evaluations.

Using these operators helps in constructing precise queries that define how data should be retrieved and assessed. For instance, when fetching specific records, using a comparison operator helps clarify which records meet the defined criteria while logical operators can concatenate multiple such conditions, enhancing the flexibility and specificity of the data retrieval process. This is essential in database management and reporting tasks where the search for particular data points or patterns is needed.