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MySQL 1228: Cannot add partition.
When encountering the error 1228: Cannot add partition in MySQL, follow these immediate actions:
- Check Storage Space: Ensure there's sufficient disk space where the database is hosted. Run the command `df -h` to view available space on all mounted filesystems. Low disk space could prevent new partitions from being added.
- Review Partition Limit: MySQL tables have a limit on the number of partitions. Check if your table has reached this limit by running:
SELECT TABLENAME, PARTITIONNAME FROM informationschema.partitions WHERE TABLESCHEMA = 'yourdatabasename';
Replace `yourdatabasename` with the name of your database. This will help you review the current partition setup and count.
- Check MySQL Error Log: Look for more detailed error messages in the MySQL error log. The location of this log depends on your MySQL configuration, but you can find it by running:
SHOW VARIABLES LIKE 'log_error';
Then, review the log file for any additional messages related to the error.
- Examine Table Status: Check for any issues with the table you're trying to partition by running:
CHECK TABLE yourtablename;
Replace `yourtablename` with the name of the table you're working on.
- Review MySQL Version: Ensure your MySQL version supports the type of partitioning you're attempting. Some partitioning features are only available in newer versions. Check your MySQL version with:
SELECT VERSION();
- Alter Table Statement: If you've confirmed space, limits, and version aren't issues, consider reviewing your ALTER TABLE statement for syntax errors or constraints. Ensure it follows the correct syntax for adding partitions.
Perform these actions step by step to identify and potentially resolve the issue with adding a partition in MySQL.
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