Joomla! (with K2) MySql - Error when generating - mysql

Question

I dont get it ... I tested a lot but dont get why a SQL error appears ...
In my case I use a function to generate a mysql-query to get all extra-field items from the database (K2 - Component).
It is used like this:
public static function readExtraFields ($fields, $as = 'array') {
if (!is_array($fields)) $fields = json_decode($fields);
$result = array();
$whereId = array();
$allFieldValues = array();
foreach ($fields as $field) {
$whereId[] = "`id`='".$field->id."'";
$allFieldValues[$field->id] = $field->value;
}
$query = "SELECT * FROM `#__k2_extra_fields` WHERE " . implode(" OR ", $whereId);
$queryResult = self::execQuery($query);
[...]
In this method a query will be generated like this (I printed it out)
SELECT * FROM `#__k2_extra_fields` WHERE `id`='1' OR `id`='2'
This is fine. When I execute the methode execQuery with the given query this error appears:
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 SQL=SELECT * FROM `j7req_k2_extra_fields` WHERE
Thats all ... I dont get it. My method to execute my mysql-query:
public static function execQuery ($query) {
$db = JFactory::getDbo();
$db->setQuery($query);
$result = $db->loadObjectList();
return $result;
}
For testing I printed out the Query (the above) and set $query to the printed query and this runs without any problems like the way it should work ... So the query which is given is right ... what can be the problem ?
Edit 1
In my execQuery method I printed the $db out. This reuslt is given (you can find the query at the bottom of this object)
JDatabaseDriverMysqli Object
(
[name] => mysqli
[nameQuote:protected] => `
[nullDate:protected] => 0000-00-00 00:00:00
[_database:JDatabaseDriver:private] => podopraxis
[connection:protected] => mysqli Object
(
[affected_rows] => 1
[client_info] => mysqlnd 5.0.11-dev - 20120503 - $Id: bf9ad53b11c9a57efdb1057292d73b928b8c5c77 $
[client_version] => 50011
[connect_errno] => 0
[connect_error] =>
[errno] => 0
[error] =>
[error_list] => Array
(
)
[field_count] => 1
[host_info] => localhost via TCP/IP
[info] =>
[insert_id] => 0
[server_info] => 5.6.16
[server_version] => 50616
[stat] => Uptime: 48979 Threads: 1 Questions: 6461 Slow queries: 0 Opens: 163 Flush tables: 1 Open tables: 155 Queries per second avg: 0.131
[sqlstate] => 00000
[protocol_version] => 10
[thread_id] => 203
[warning_count] => 0
)
[count:protected] => 45
[cursor:protected] =>
[debug:protected] =>
[limit:protected] => 0
[log:protected] => Array
(
)
[timings:protected] => Array
(
)
[callStacks:protected] => Array
(
)
[offset:protected] => 0
[options:protected] => Array
(
[driver] => mysqli
[host] => localhost
[user] => root
[password] =>
[database] => podopraxis
[prefix] => j7req_
[select] => 1
[port] => 3306
[socket] =>
)
[sql:protected] => SELECT * FROM `#__k2_extra_fields` WHERE `id`='1' OR `id`='2'
[tablePrefix:protected] => j7req_
[utf:protected] => 1
[errorNum:protected] => 0
[errorMsg:protected] =>
[transactionDepth:protected] => 0
[disconnectHandlers:protected] => Array
(
)
)

Answer 1

It looks like your query fired in execQuery() function is missing the condition statement after "WHERE" clause of query.
Please make sure below part of condition comes in your query:
`id`='1' OR `id`='2'
let me know if I am not getting well about your question?
Also try to post here whole $db object by printing as below:
echo "<pre />";print_r($db);exit;