How to Log the Actual SQL Statement Executed by a PreparedStatement in Java?

Logging the Actual SQL Statement Executed by a PreparedStatement

In Java, when working with prepared statements, it's valuable to log the actual SQL statement that gets executed. However, by default, logging the sql string used to create the statement only shows the template with placeholders ('?').

Challenges of Extracting Actual SQL Statement

Prepared statements separate the statement from the parameters. The statement is parsed and optimized by the database, and the parameters are handled separately. Therefore, there's no explicit representation of the final SQL statement to be executed.

Possible Solutions

• Logging Statement and Parameters Separately: Log the statement template and the list of parameters. While not as convenient, this approach provides the information necessary for debugging.
• Building the SQL Query Manually: Manually construct the SQL query using the statement template and the parameter values. This method is labor-intensive and prone to errors.
• Using Third-Party Libraries: Some libraries offer the ability to retrieve the actual SQL statement after it has been executed. However, this depends on the specific library and database being used.

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