You can use the Nothing action to audit the SQL request by selecting Log When Rule is Applied.

If Dynamic Data Masking does not need to process data manipulation language commands, you can use the Nothing action to make SQL requests bypass rule processing sections. For example, you can create a rule tree in which the first rule identifies SQL requests with data manipulation language commands. In the rule, select the Nothing rule action and the Stop if Applied processing action. Dynamic Data Masking sends SQL requests with data manipulation language commands to the database instead of to the next rule in the tree.

For example, if you do not want to mask data manipulation language commands for a specific table, apply the Nothing action to data manipulation language commands. When the Rule Engine applies the rule to a request statement that uses data manipulation language commands, the Rule Engine does not mask the statement.