<p>MySQL throws error 1748 when an INSERT or UPDATE targets a partitioned table but the row’s partition key values do not match the explicitly referenced partition.</p>
<p>MySQL Error 1748 ER_ROW_DOES_NOT_MATCH_GIVEN_PARTITION_SET occurs when a row does not belong to the partition named in an INSERT or UPDATE statement. Remove the PARTITION hint or supply values that map to the correct partition to resolve the issue.</p>
Found a row not matching the given partition set
MySQL raises error 1748 with the message Found a row not matching the given partition set when an INSERT or UPDATE references a specific partition but the supplied values would be routed to a different partition based on the table definition.
The server validates partition key columns during DML. If the PARTITION clause conflicts with the partitioning function, the statement fails to keep data integrity intact.
The error appears most often with INSERT ... PARTITION or UPDATE ... PARTITION statements where the partition key values hash, list, or range into a different partition than the one named.
Schema changes such as ALTER TABLE ... ADD PARTITION or ALTER PARTITION FUNCTION can render hard-coded partition names stale, triggering error 1748 in previously working code.
Identify the correct partition for the row by inspecting the partition scheme with SHOW CREATE TABLE or INFORMATION_SCHEMA.PARTITIONS. Then either remove the PARTITION hint so MySQL routes the row automatically or adjust the key values to match the hinted partition.
For updates, ensure that changes to partition key columns continue to map the row to the addressed partition. When relocating rows, perform a DELETE from the old partition followed by an INSERT without a PARTITION clause.
Range partition example: inserting 2024 data into partition p2023 fails. Solution: switch to p2024 or drop the PARTITION clause.
Cached partition names: application keeps p2023 after new partitions added. Solution: refresh cache or avoid hard-coding partition names.
Only include PARTITION in DML when absolutely needed. Allow the optimizer to choose the correct partition automatically.
When partition hints are required, generate them dynamically based on the same logic that created the partition scheme. Test regularly after schema changes.
Galaxy surfaces partition metadata in its schema sidebar and warns when your query’s PARTITION clause conflicts with the current layout, reducing runtime errors.
Error 1739 ER_NO_PARTITION_FOR_GIVEN_VALUE: occurs when no partition exists for the supplied values. Fix by adding a suitable partition or changing the data values.
Error 1503 ER_PARTITION_HANDLER: signals inability to open a partition. Verify storage paths and permissions.
The values in partition key columns route to a partition other than the one named in the DML statement.
Application logic uses a partition that was valid before schema changes such as ADD PARTITION.
An UPDATE changes a partition key so the row no longer belongs in the referenced partition.
Defaults compute to unexpected values that violate the PARTITION hint.
No partition exists for the supplied values. Usually fixed by adding a new partition or altering data values.
Indicates problems opening a partition file. Check file paths, permissions, and storage engine support.
Occurs when partition management commands target a non-partitioned table.
No. MySQL enforces partition integrity. You must supply correct partition hints or omit them.
Yes, if the INSERT part uses a PARTITION clause and the selected rows map elsewhere, the error is raised.
Hard-coded partition names became outdated. Refresh them or remove the PARTITION clause.
Galaxy shows current partition metadata and warns when PARTITION hints conflict with the schema, reducing runtime failures.
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