<p>MySQL raises error 1563 when a partition constant falls outside the allowed range defined by the partition function.</p>
<p>MySQL Error 1563: ER_PARTITION_CONST_DOMAIN_ERROR happens when the partition value you supply is not within the valid range of the partitioning expression. Verify the column data type, then adjust the boundary value or widen the partition function to solve the problem.</p>
Partition constant is out of partition function domain
MySQL throws error 1563 when a constant used in a partition definition or partition pruning predicate is outside the value range accepted by the partition function, often a RANGE or LIST partition on integer or date columns.
The server refuses to create, alter, or query the table because the misplaced constant would make partitions unreachable or inconsistent, risking silent data loss or wrong query plans.
The most frequent cause is specifying a partition boundary value that is smaller or larger than the allowed integer, date, or enum domain. For example, using 0 in a RANGE partition on a UNSIGNED column that starts at 1 triggers the error.
The error also appears during SELECT with partition pruning if a constant literal in the WHERE clause bows outside the partition domain, especially after schema changes.
First confirm the data type and range of the partition key column with DESCRIBE or INFORMATION_SCHEMA queries. Adjust the offending constant to fall within that range, or cast it to the correct type.
If the constant is valid but the partition function is too narrow, redefine the table with ALTER TABLE REORGANIZE PARTITION or EXCHANGE PARTITION to expand the range.
During CREATE TABLE, ensure each VALUES LESS THAN clause holds values increasing and inside the column domain.
When filtering with SELECT ... PARTITION or WHERE clauses, wrap parameters with CAST or TRUNCATE to keep them inside the supported domain.
Validate boundary values in migration scripts and CI pipelines. Use CHECK constraints where available to mirror partition ranges.
Galaxy's AI copilot highlights out-of-range literals in the editor and offers one-click fixes, preventing the error before the query hits production.
Errors 1493, 1504, and 1730 often accompany partition misconfigurations; see below for details.
A numeric or date constant is below MIN_VALUE or above MAX_VALUE of the partition key column.
Partition boundary is negative while the column is UNSIGNED, or vice versa.
Supplying a string to a numeric partition function causes implicit cast that fails domain check.
Column type changed after partitions were defined, making earlier constants invalid.
Raised when a non-deterministic function is used in partitioning.
Occurs if subpartition definitions conflict with primary partition layout.
Appears when a PARTITION clause is used on a table without partitioning.
No. MySQL enforces it to guarantee correct partition pruning. Adjust the constant or partition layout instead.
Yes. An INSERT with a value outside all partition ranges fails with the same error.
All supported versions from 5.1 forward include this check, though exact wording can differ.
Galaxy's editor combines schema introspection with AI suggestions, warning you in real time when a literal risks crossing partition bounds.
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