How Can I Check the Final Executed SQL Query When Using PDO Parameterized Queries in PHP?

Checking Final Parameterized Query in PHP with PDO

When working with PDO in PHP to connect to a MySQL database, sometimes it becomes necessary to check the final SQL query that will be executed. The original question prompts, "Is there a way to check what gets really executed by the database?"

Short Answer: No

As pointed out in the answer, there is no straightforward way to retrieve the final query on the PHP side. The reason for this is that parameterized queries are sent to the database in separate parts: the query itself (with tokens) and the corresponding parameters. The final query is assembled and executed only on the database side.

Workaround: Query Logging

Although direct retrieval of the final query is not possible, a workaround can be implemented using query logging. By modifying the my.cnf (or my.ini) configuration file to include the following line:

log=[REPLACE_BY_PATH]/[REPLACE_BY_FILE_NAME]

All SQL queries executed on the server will be logged to the specified file. Note that this should only be used for debugging purposes and should not be used in production environments.

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