What are the potential pitfalls of duplicating a record in a MySQL database using PHP?

When duplicating a record in a MySQL database using PHP, the potential pitfalls include creating duplicate entries that may cause data inconsistency, violating unique constraints, and wasting storage space. To avoid these issues, you should first check if the record already exists before inserting a duplicate entry. 

// Check if the record already exists before inserting a duplicate
$existing_record = mysqli_query($connection, "SELECT * FROM table_name WHERE column_name = 'value'");
if(mysqli_num_rows($existing_record) == 0) {
    // Insert the record if it does not already exist
    mysqli_query($connection, "INSERT INTO table_name (column1, column2, column3) VALUES ('value1', 'value2', 'value3')");
}

Keywords

MySQL PHP duplication record error handling

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