Query Databases with Regular Expressions

The method for using regular expressions in database queries is to use regular expressions as query criteria to match and filter data in the database. When performing a query operation, regular expressions can be used to define the pattern that needs to be matched, thereby retrieving data that conforms to the pattern. Different database systems may have different syntax and functions to support regular expression queries, such as MySQL, Oracle, SQL Server, etc. Specific usage methods can be found in the corresponding database documentation and syntax specifications.