<p>The table lacks a partition matching one or more inserted or updated values, so MySQL discards the operation silently.</p>
<p>ER_NO_PARTITION_FOR_GIVEN_VALUE_SILENT occurs when MySQL cannot find a partition that matches the row's partition key. Add or reorganize partitions or adjust the PARTITION BY clause so every key value has a target partition to resolve the issue.</p>
Table has no partition for some existing values
MySQL raises ER_NO_PARTITION_FOR_GIVEN_VALUE_SILENT (SQLSTATE HY000) when a row's partition key does not map to any existing partition in a partitioned table.
The engine discards or aborts the insert, update, or load, risking data loss because the unmatched row has nowhere to be stored.
New key values that fall outside defined RANGE or LIST boundaries trigger the error.
Dropping or reorganizing partitions without adjusting data ranges, supplying NULL, or using an incorrect partition key also produce the fault.
Add or reorganize partitions with ALTER TABLE so every possible key value is covered.
Alternatively change the data to fit existing partitions or adjust the PARTITION BY expression.
After altering, rerun the write to confirm the row now lands in a valid partition.
Loading historical data beyond current RANGE partitions often fails until new yearly partitions are added.
Tenant migrations break when list partitions omit a new tenant_id; adding that value solves the issue.
ETL processes inserting NULL into the partition key fail; updating NULL to a valid key prevents the error.
Schedule jobs to create future partitions before the first insert date.
Enforce NOT NULL and value checks in application code to stop invalid keys.
Use Galaxy's schema-aware AI copilot to preview partitions and catch key mismatches before execution.
A RANGE partitioned table receives a value greater than the highest partition MAXVALUE.
A LIST partitioned table lacks a partition containing the inserted list item.
An administrator removed a partition without expanding remaining ranges, leaving gaps.
INSERT or UPDATE supplies NULL to a NOT NULL partition key, so no partition qualifies.
Indicates incorrect subpartition definition during table creation or alteration.
Occurs when a table exceeds the maximum 8192 partitions limit.
Signals duplicate primary key insertion, different from missing partition but often seen together.
Raised when a referenced column in the PARTITION BY expression does not exist.
Yes, MySQL silently discards unmatched rows unless strict SQL mode converts it to a hard failure.
Enable STRICT_ALL_TABLES and watch for SQLSTATE HY000 to detect the failure instead of silent loss.
A catch all MAXVALUE partition prevents range gaps but may cause unbounded growth; rotate partitions instead.
Galaxy highlights partition metadata next to your query and its AI copilot warns when values fall outside defined ranges.
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