Why Am I Getting a 'Truncated incorrect DOUBLE value' Error During a MySQL UPDATE?

MYSQL Incorrect Double Value Truncation during UPDATE

The provided SQL update query attempts to modify the name and name_eng columns in the shop_category table. However, an error is encountered with the message "Truncated incorrect DOUBLE value: 'Secolul XVI - XVIII'". This error typically occurs when attempting to insert or update data in a column defined as a numeric data type (e.g., DOUBLE, FLOAT) with a value that cannot be represented in the column's predefined precision or scale.

To rectify this issue, it is crucial to verify the data type of the name and name_eng columns. According to the provided table structure, both columns are defined as varchar(250), indicating that they expect string values rather than numeric values. Therefore, the error is unlikely to be caused by an incorrect data type.

Instead, the error may be attributed to an incorrect syntax in the UPDATE statement. Notice the presence of the AND keyword between the name and name_eng assignments. This syntax is incorrect; in an UPDATE statement, multiple column assignments should be separated by commas without using AND.

Corrected Update Statement:

The following corrected statement will successfully update the specified columns:

<code class="sql">UPDATE 
    shop_category 
SET 
    name = 'Secolul XVI - XVIII', 
    name_eng = '16th to 18th centuries' 
WHERE 
    category_id = 4768</code>

This statement will assign the string values 'Secolul XVI - XVIII' and '16th to 18th centuries' to the name and name_eng columns, respectively, without encountering any errors.

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