Here are a few title options, capturing the query and solution in a question format: * MySQL INSERT Error: \'Column Count Doesn\'t Match Value Count\' - How to Fix? * \'Column Count Do

Error Handling: Resolving "Column Count Doesn't Match Value Count" in MySQL Inserts

When attempting to insert data from one table into another in MySQL, you may encounter the error "#1136 - Column count doesn't match value count at row 1." This occurs when the number of columns specified in the INSERT statement does not match the number of columns in the retrieved data.

Error Cause and Solution

In the provided query, the error occurs because the INSERT statement attempts to insert the result of a subquery into several columns. However, the subquery only retrieves three columns (magazine_subscription_id, subscription_name, magazine_id), while the INSERT statement specifies four columns (magazine_subscription_id, subscription_name, magazine_id, status).

To resolve this error, you can modify the INSERT statement to directly include the missing value for the status column, as seen in the revised query below:

INSERT INTO mt_magazine_subscription ( 
  magazine_subscription_id, 
  subscription_name, 
  magazine_id, 
  status ) 
SELECT 
  magazine_subscription_id, 
  subscription_name, 
  magazine_id, 
  '1'
FROM tbl_magazine_subscription
ORDER BY 
  magazine_subscription_id ASC;

In this modified query, the '1' literal is directly specified as the value for the status column, ensuring that the column count matches the value count.

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