Error
Error Code:
3012
MySQL Error 3012: Unsupported EXPLAIN FOR CONNECTION Target
Description
This error indicates that the `EXPLAIN FOR CONNECTION` command was used on a SQL statement type not supported for analysis. It specifically occurs when attempting to explain a query that is not a `SELECT`, `UPDATE`, `INSERT`, `DELETE`, or `REPLACE` statement.
Error Message
EXPLAIN FOR CONNECTION command is supported only for SELECT/UPDATE/INSERT/DELETE/REPLACE
Known Causes
3 known causesUsing EXPLAIN on DDL Statements
The EXPLAIN FOR CONNECTION command is designed for Data Manipulation Language (DML) operations, not Data Definition Language (DDL) like `CREATE TABLE` or `ALTER TABLE`.
Explaining Administrative Commands
MySQL administrative commands (e.g., `SHOW`, `SET`, `FLUSH`) and other utility statements are not valid targets for `EXPLAIN FOR CONNECTION`.
Unsupported Control Flow or Transaction Statements
Statements such as `COMMIT`, `ROLLBACK`, or those within stored procedures that are not DML operations cannot be analyzed using `EXPLAIN FOR CONNECTION`.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service