jQuery DataTable中的联接查询问题

Question

I am using jquery datatable with server-side processing. Just I am trying to make join query to produce output.

So I changed columns array to something like this:

$aColumns = array (
                   "u.user_id", 
                   "CONCAT(u.first_name, ' ', u.last_name)", 
                   "u.gender", 
                   "CONCAT(a.suburb, ', ', a.zip_code)", 
                   "u.date_registered"
                 );

And changed query like this.

$sQuery = "SELECT SQL_CALC_FOUND_ROWS u.user_id 
                    , CONCAT(u.first_name, ' ', u.last_name)
                    , u.gender
                    , CONCAT(a.suburb, ', ', a.zip_code)
                    , u.date_registered
    FROM users u 
    INNER JOIN user_addresses a ON a.user_id = u.user_id ".$sWhere.$sOrder.$sLimit;

Then I can populate the datatable. But its search, filter and sort is not working.

This kind of error I can get when I trying to search, filter or sort.

Unknown column 'u.user_id' in 'where clause'

Updates This is the output when I echo $sQuery

SELECT SQL_CALC_FOUND_ROWS  u.user_id 
                          , CONCAT(u.first_name, ' ', u.last_name)
                          , u.gender
                          , CONCAT(a.suburb, ', ', a.zip_code)
                          , u.date_registered
FROM users u 
INNER JOIN user_addresses a ON a.user_id = u.user_id AND a.address_type = 1  
WHERE (`u.user_id` LIKE '%s%' OR `CONCAT(u.first_name, ' ', u.last_name)` LIKE '%s%' OR `u.gender` LIKE '%s%' OR `CONCAT
(a.suburb, ', ', a.zip_code)` LIKE '%s%' OR `u.date_registered` LIKE '%s%') LIMIT 0, 10 
Unknown column 'u.user_id' in 'where clause'

Can anybody may help me out. Thank you.

Answer 1

You are wrapping the column name in backticks, not just the column name.

For example, you have:

`u.user_id`

Where it should be:

u.`user_id`

You will need to change this for all your values in the where clause.