Why Does MySQL Store 2147483647 Incorrectly, and How Can I Fix It?

MySQL Incorrect Integer Insertion: The Case of 2147483647

Inserting data into MySQL can sometimes lead to unexpected behaviors, especially when dealing with integer values. One such perplexing issue arises when inserting the integer 2147483647, which can result in a different value being stored in the database than intended.

To understand why this occurs, it's important to grasp the concept of integer size limitations in MySQL. By default, MySQL uses the 'int' data type, which has a maximum value of 2147483647. This means that integer values larger than this threshold cannot be accurately stored in 'int' columns.

In the provided code snippet, the variable '$steam64' is likely storing a Steam Web API user ID, which can be a large numeric value. When this value is inserted into a column defined as 'int', MySQL attempts to force it within the maximum integer range, resulting in the aforementioned incorrect value.

The solution to this problem lies in changing the data type of the column to 'bigint'. Big integers can hold values much larger than 'int', enabling the accurate storage of values like 2147483647 without any truncation or distortion.

To modify the data type in MySQL, simply execute the following query:

ALTER TABLE users_info MODIFY COLUMN steam64 BIGINT;

This modification will allow MySQL to handle large integer values like $steam64 correctly, ensuring that the data inserted into the database accurately reflects the values stored in the script.

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