<p>MySQL raises ER_PARTITION_NAME (error 1633) when a partition name in a CREATE or ALTER TABLE statement is invalid, duplicated, or conflicts with naming rules.</p>
<p>MySQL Error 1633: ER_PARTITION_NAME occurs when a partition name in CREATE TABLE or ALTER TABLE violates naming rules or duplicates an existing partition. Use a unique, valid identifier that follows MySQL’s 64-character limit and rerun the statement to resolve the issue.</p>
Partition
MySQL error 1633 appears when a CREATE TABLE or ALTER TABLE statement defines a partition name that the server cannot accept.
The name may duplicate another partition, exceed 64 characters, contain illegal characters, or clash with reserved keywords.
The server stops the DDL operation to protect metadata integrity, leaving the table unchanged until the fault is corrected.
Error 1633 is triggered by duplicate partition names within the same table. MySQL requires each partition and sub-partition to have a unique identifier.
Using characters outside a-z, 0-9, or the underscore also causes the error because partition names must follow identifier rules.
Names longer than 64 bytes or starting with a digit can be rejected, as can names that repeat after case folding on case-insensitive systems.
Pick a unique, legal partition name. Ensure the identifier is under 64 characters, starts with a letter, and uses only permitted characters.
Revise the CREATE or ALTER statement with the corrected name, then execute it again. The table will be partitioned successfully.
Developers often clone sample DDL and forget to update partition names, leading to duplicates. Renaming duplicated partitions resolves the issue.
Auto-generated names from scripts may exceed 64 characters. Truncate or hash the string to a shorter, unique value.
Case-insensitive file systems on Windows can treat Part1 and part1 as equal. Use fully unique names such as p_2024_q1 and p_2024_q2.
Adopt a consistent naming convention like p_YYYY_MM, ensuring predictable, unique names across environments.
Validate partition names in CI pipelines with a regex check before deploying migration scripts.
When working in Galaxy, enable query linting so the editor flags illegal identifiers before running the statement.
Error 1517 (ER_WRONG_PARTITION_NAME) indicates illegal characters; fix by renaming the partition.
Error 1733 (ER_PARTITION_NAME_DUPLICATE) flags repeated names during ALTER TABLE; provide distinct identifiers.
Error 1735 (ER_PARTITION_SUBPARTITION_ERROR) arises when sub-partition definitions are missing; supply full syntax to solve.
The same name is used twice in a single CREATE or ALTER statement.
Names contain spaces, hyphens, or symbols that are not allowed in MySQL identifiers.
Long auto-generated strings breach MySQL’s identifier length restriction.
Names differ only by letter case on Windows or macOS, causing perceived duplication.
Thrown when a partition name contains disallowed characters.
Raised during ALTER TABLE if a new partition duplicates an existing one.
Indicates mismatched or missing sub-partition definitions.
Yes. Use ALTER TABLE ... PARTITION p_old RENAME TO p_new to change the identifier without moving data.
On case-sensitive file systems, yes. On Windows and some macOS setups, names differing only by case are treated as duplicates.
No. You must explicitly specify each partition name, making a clear naming convention essential.
Galaxy’s editor validates identifier length and uniqueness in real time, highlighting problematic names before running DDL.
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