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Description

This error occurs when you attempt to create or alter a MySQL view with the `WITH CHECK OPTION` clause, but the view's underlying definition makes it inherently non-updatable. The `CHECK OPTION` cannot be applied to views that cannot support direct data modifications to their base tables.

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Error Message

CHECK OPTION on non-updatable view '%s.%s'

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Known Causes

4 known causes

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View uses Aggregate Functions or DISTINCT

The view definition includes aggregate functions (e.g., SUM(), COUNT()) or the DISTINCT keyword, which prevent direct updates to the underlying data.

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View contains GROUP BY or HAVING

The view's GROUP BY or HAVING clauses make it impossible to determine which specific base table rows correspond to an update, rendering the view non-updatable.

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View involves Complex Joins or Subqueries

Complex joins where changes to view rows cannot be unambiguously mapped to a single base table row, or subqueries in the SELECT list, can make a view non-updatable.

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View Columns are Derived or Non-Updatable

Some columns in the view are derived from expressions, literals, or columns from non-updatable tables, making the entire view non-updatable for CHECK OPTION.

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Solutions

3 solutions available

1. Remove CHECK OPTION from the View Definition easy

The simplest fix is to remove the CHECK OPTION clause if it's not strictly required for data integrity.

1

Identify the view that is causing the error. The error message will specify the database and view name.

2

Retrieve the current definition of the view.

SHOW CREATE VIEW `database_name`.`view_name`;

3

Modify the view definition by removing the `WITH CHECK OPTION` clause. Then, recreate the view with the modified definition.

DROP VIEW `database_name`.`view_name`;
CREATE VIEW `database_name`.`view_name` AS
SELECT column1, column2
FROM base_table
WHERE condition;

-- If the original view had WITH CHECK OPTION, the new definition will not include it.

2. Modify the View to be Updatable medium

Ensure the view's underlying query meets MySQL's criteria for updatability, then re-add CHECK OPTION if needed.

1

Examine the `CREATE VIEW` statement for the problematic view. MySQL has specific rules for updatable views. Generally, a view is updatable if it refers to a single table and doesn't use features like `DISTINCT`, aggregate functions (`COUNT`, `SUM`, `AVG`, etc.), `GROUP BY`, `HAVING`, subqueries in the `SELECT` list, or certain `JOIN` types.

2

If the view is not updatable due to these reasons, you will need to redesign the view's query to comply with updatability rules. This might involve simplifying the query, selecting from a single base table, or removing problematic clauses.

3

Once the view is confirmed to be updatable, you can then add `WITH CHECK OPTION` back to its definition.

DROP VIEW `database_name`.`view_name`;
CREATE VIEW `database_name`.`view_name` AS
SELECT column1, column2
FROM base_table
WHERE condition
WITH CHECK OPTION;

3. Use a Stored Procedure or Application Logic for Data Modification medium

Bypass the view for modifications by using stored procedures or handling data integrity checks in your application code.

1

Identify the operations (INSERT, UPDATE, DELETE) that are failing due to the `CHECK OPTION` on the non-updatable view.

2

Create a stored procedure that performs the desired data modifications directly on the base table(s). This procedure can encapsulate the business logic and validation that `CHECK OPTION` was intended to enforce.

DELIMITER //
CREATE PROCEDURE `sp_update_view_data`(
    IN p_column1 INT,
    IN p_column2 VARCHAR(255)
)
BEGIN
    -- Perform validation if necessary
    IF p_column1 > 100 THEN
        SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Invalid value for column1';
    ELSE
        UPDATE `database_name`.`base_table`
        SET column1 = p_column1, column2 = p_column2
        WHERE some_condition_to_identify_row;
    END IF;
END //
DELIMITER ;

3

Alternatively, implement the data validation and modification logic within your application code (e.g., Python, Java, PHP). Your application will then perform the necessary checks before executing `INSERT`, `UPDATE`, or `DELETE` statements against the base tables.

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Related Errors

5 related errors

MySQL Error 1368: CHECK OPTION on Non-Updatable View