MySQL 1225: Duplicate partition name.

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What is

MySQL 1225: Duplicate partition name.

 ?

When encountering the error 1225: Duplicate partition name in MySQL, follow these steps:

  1. Identify the specific query causing the error by checking the application logs or MySQL query logs. This helps to pinpoint the operation that led to the duplicate partition name issue.



  1. Use the `SHOW CREATE TABLE tablename;` command to check the existing partition names for the table involved in the operation. Replace `tablename` with the name of the table you're dealing with. This command outputs the table's structure, including partition names.



SHOW CREATE TABLE tablename;

  1. Compare the partition names obtained from step 2 with the partition name causing the error to identify the duplicate name.



  1. If the intention was to add a new partition, ensure that the new partition name is unique. Modify the original ALTER TABLE statement to use this new, unique partition name.



  1. If the intention was to modify or drop an existing partition, ensure that the correct partition name is being referenced in your query.



  1. To modify the existing partition scheme without causing duplicates, use the `ALTER TABLE` command with the correct partitioning options. Here is a generic example of adding a partition with a unique name:



ALTER TABLE tablename
ADD PARTITION (PARTITION newpartitionname VALUES LESS THAN (value));

Replace `tablename`, `newpartitionname`, and `value` with the actual table name, the new unique partition name, and the partition value, respectively.

  1. After making the adjustments, re-run the corrected query.



8. To avoid future errors, periodically review and document partition names and schemes as part of your database maintenance routine.

Attached error: 
MySQL 1225: Duplicate partition name.
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MySQL 1220: Cannot update parent row.
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