MySQL 1092: Incorrect index name.

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What is

MySQL 1092: Incorrect index name.

 ?

When encountering the error 1092: Incorrect index name in MySQL, the immediate action to take includes the following steps:

  1. Identify the query that caused the error. Look at the application logs or MySQL query logs if enabled. This helps in understanding which index is causing the issue.



  1. Check the existing indexes on the table mentioned in the error. Run the following SQL command, replacing `yourtablename` with the name of the table you're troubleshooting:


SHOW INDEXES FROM yourtablename;
This will list all indexes on the table, allowing you to verify if the index name mentioned in the error actually exists.

  1. If the index does not exist, you might need to create it or correct the index name in your query or application code. If the index should be removed or modified, ensure you have the correct index name and structure before proceeding.



  1. If the issue is due to a typo or incorrect index name in a query or code, correct it and rerun your query or application to confirm the issue is resolved.



  1. If you attempted to drop an index and encountered this error, ensure you are using the correct index name as per the output of the `SHOW INDEXES` command. Use the following command to drop the index, replacing `indexname` with the correct index name and `tablename` with the name of your table:


ALTER TABLE tablename DROP INDEX indexname;

Attached error: 
MySQL 1092: Incorrect index name.
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