<p>MySQL raises error 1355 when you try to update or delete through a view that does not include every column of the underlying table's primary key.</p>
<p>MySQL Error 1355: ER_WARN_VIEW_WITHOUT_KEY appears when an UPDATE or DELETE targets a view that omits part of the base table's primary key. Add all key columns to the view or route the change to the base table to resolve the issue.</p>
View being updated does not have complete key of
Error 1355 fires when you execute UPDATE or DELETE against a view that MySQL still classifies as updatable, yet the view definition fails to expose every column that forms the primary or unique key of the referenced table. Without the full key, MySQL cannot guarantee that one and only one row will be touched, so it stops the statement.
The server throws the message: "View being updated does not have complete key of underlying table in it" and aborts the modifying statement. SELECT statements on the same view work fine because they need no row-identity guarantee.
You meet the error in MySQL 5.7 and 8.0 when running UPDATE, DELETE, or multi-table UPDATE on a view that lacks some key columns. The same action on the base table or on a corrected view will succeed.
The error can appear as a warning at creation time and later as a blocking error at run time, depending on sql_mode settings such as STRICT_ALL_TABLES.
The failure stops data-modification workflows and breaks application logic that expects the update to succeed. Persisting the problem invites data drift if other processes work around it by bypassing the view's intended abstraction.
MySQL enforces that every updatable view include a column set that uniquely identifies each base-table row. Leaving out even one composite key component violates that rule and raises error 1355.
Other design flaws can hide key columns: wildcard SELECT *, use of column aliases that remove the key name, or privilege restrictions that exclude sensitive key fields.
Expose all primary or unique key columns in the view. Recreate or alter the view with the missing columns, then re-run the modification statement.
If exposing the columns violates security policies, perform the UPDATE or DELETE directly on the base table or craft a stored procedure that accepts safe parameters.
Attempting to delete through a reporting view that lists only non-PK attributes fails. Add id columns or use a subquery against the base table instead.
Updating a status flag via an ORM that targets a limited view triggers error 1355. Adjust the ORM mapping so it references the base table or an augmented view.
Always include the complete primary key in any view you intend to make updatable. Document the requirement in code reviews and automation scripts.
Use CHECK OPTION when creating views so future alterations do not silently drop key columns and re-introduce error 1355.
Error 1369: ER_VIEW_CHECK_FAILED occurs when UPDATE violates the view's WITH CHECK OPTION clause. Validate the condition columns before updating.
Error 1288: ER_VIEW_SELECT_CLAUSE is raised when a view contains a subquery in the SELECT list. Rewrite the view to remove subqueries.
The view leaves out one or more columns of a multi-column primary key, removing row uniqueness.
SELECT * may not retrieve later-added key columns, leading to silent omissions that surface during updates.
The creator hides sensitive identifiers (e.g., customer_id) for privacy, unknowingly breaking updatability.
The executing user lacks SELECT privilege on key columns, causing the view engine to exclude them.
Raised when an UPDATE or INSERT violates the view's WITH CHECK OPTION condition. Add valid data or relax the check.
Occurs when the view's SELECT list contains a subquery or aggregation that makes it non-updatable. Remove disallowed constructs.
Triggered when a view references tables for which the definer no longer has privileges. Recreate the view under a valid account.
No. SELECT queries on the view work because they do not need row-identity guarantees.
No. MySQL blocks the modifying statement until the view exposes the full key or you update the base table.
If the key contains sensitive data, restrict access with column-level privileges or use stored procedures rather than hiding the key in the view.
Galaxy's SQL editor highlights updatability rules and suggests missing key columns during view creation, preventing error 1355 before it reaches production.
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