How can the error message "Unknown column 'H' in 'where clause'" be resolved in the context of a PHP MySQL query?

The error message "Unknown column 'H' in 'where clause'" typically occurs when the column specified in the WHERE clause of a MySQL query does not exist in the database table. To resolve this issue, check the column name for typos or ensure that the column actually exists in the table being queried. 

// Assuming the column name is 'H' and the table name is 'example_table'
// Check the column name for typos or ensure that the column actually exists in the table

$query = "SELECT * FROM example_table WHERE column_name = 'value'";
$result = mysqli_query($connection, $query);

if($result){
    // Process the query result
} else {
    echo "Error: " . mysqli_error($connection);
}

Keywords

PHP MySQL SQL WHERE clause Error message

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