function hosting_task_update_6002 in Hosting 7.4

Same name and namespace in other branches

1. 6.2 task/hosting_task.install \hosting_task_update_6002()
2. 7.3 task/hosting_task.install \hosting_task_update_6002()

Implements hook_update_N().

Remove all the duplicate task nodes for previous task type / rid combinations

This makes it more efficient to query and generate the data, and makes sure we don't lose any history.

File

task/hosting_task.install, line 209

Define the database schema and update functions for the hosting_task module.

Code

function hosting_task_update_6002() {
  $ret = array();
  $result = db_query("select t.task_type, t.rid, max(t.nid) as max_nid from {hosting_task} t group by t.task_type, t.rid");
  while ($obj = db_fetch_object($result)) {
    db_query("UPDATE {hosting_task} SET nid = %d WHERE task_type='%s' AND rid=%d", $obj->max_nid, $obj->task_type, $obj->rid);
  }
  db_query("update {hosting_task_arguments} a, {hosting_task} t set a.nid=t.nid where a.vid=t.vid");
  db_query("update {node_revisions} r, {hosting_task} t set r.nid=t.nid where r.vid=t.vid");
  $result = db_query("select n.nid, count(t.vid) as vid_count from {node} n left join {hosting_task} t on n.nid = t.nid where n.type = 'task' group by n.nid having vid_count = 0");
  while ($obj = db_fetch_object($result)) {
    db_query("DELETE FROM {node} WHERE nid=%d", $obj->nid);
  }
  return $ret;
}