<p>ER_RENAMED_NAME is raised when a statement refers to a table, index, or column that MySQL has automatically renamed during a previous DDL operation.</p>
<p>MySQL Error 1636 ER_RENAMED_NAME appears when you reference a database object that has been silently renamed. Identify the new object name with SHOW CREATE statements or INFORMATION_SCHEMA, update your SQL to the correct identifier, or rename the object back to its original name to eliminate the error.</p>
Renamed
Error 1636 fires with SQLSTATE HY000 when MySQL detects that the identifier you used no longer exists because it was internally renamed.
The server raises the error to prevent data loss or mismatched metadata, forcing you to reference the object by its current name.
During ALTER TABLE, online DDL, partition operations, or replication-driven changes, MySQL may create temporary shadow objects. Once the operation finishes, original names can be swapped or dropped, leaving the shadow name as the new canonical identifier.
This background rename is safe for concurrency but surprises code that still references the original name.
Any statement that references the outdated identifier - SELECT, UPDATE, INSERT, TRIGGER definition, stored procedure body, or foreign key constraint - can fail immediately with ER_RENAMED_NAME.
The message often appears after schema migrations, replication delays, or restore operations.
Unresolved references break application logic and may cascade into additional errors such as ER_BAD_FIELD_ERROR or ER_NO_SUCH_TABLE.
Quickly aligning code with the current schema maintains uptime and prevents data drift.
Galaxy’s schema-aware autocomplete highlights renamed objects in real time, prompting engineers to adopt the correct identifier before executing a query.
Version control inside Galaxy collections also records DDL history, making it easy to trace when and why an object was renamed.
Online DDL uses a temporary table suffixed with _old or _new, then renames it into place, invalidating the prior name.
EXCHANGE PARTITION and REORGANIZE PARTITION create interim tables that are renamed on completion, leaving stale references.
Replica servers may apply DDL in a way that renames objects differently from the primary, causing mismatches for cross-server queries.
Restoring dumps that excluded renamed objects can leave orphaned metadata entries, triggering the error when queried.
Raised when a referenced table truly does not exist rather than being renamed.
Occurs when a column name is unknown in the target table; may follow a silent column rename.
Triggered during DDL when attempting to create a column with an invalid or duplicate name.
Foreign key creation fails because referenced table or column names do not match after a rename.
No. Data remains intact. Only the identifier changed. Updating your queries restores access.
Not directly. Online DDL needs temporary renames for atomic swaps. Use LOCK=EXCLUSIVE if you prefer a blocking rename.
MySQL replication captures RENAME operations, so replicas apply them consistently. Ensure applications on replicas also use updated names.
Galaxy flags stale identifiers during code review, auto-suggests the correct name, and tracks DDL history so teams stay aligned.
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