Drupal Upgrade:: Need to rewrite pagerquery to version 7 - drupal

Question

I need to rewrite pagerquery, i have tried out several options adding tags, extend(PagerDefault) but nothing worked for me:
Please help.
My version 6 code is:
$sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created FROM {node} n '.$sort_join.' WHERE n.uid = %d AND n.type = "case" AND n.status = 1 ORDER BY '. $order;
$sql_count = 'SELECT COUNT(DISTINCT(n.nid)) FROM {node} n WHERE n.uid = %d AND n.type = "case" AND n.status = 1';
$args = array('uid' => $user->uid);
$sql = db_rewrite_sql($sql);
$sql_count = db_rewrite_sql($sql_count);
if ($pager) {
$result = pager_query($sql, variable_get('default_nodes_main', 10), 0, $sql_count, $args);
dsm($result);
}
else {
$result = db_query_range($sql, $args, 0, variable_get('feed_default_items', 10));
}
$num_rows = FALSE;
while ($node = db_fetch_object($result)) {
$output .= node_view(node_load($node->nid), 1);
$num_rows = TRUE;
}

Answer 1

Without knowing the name of your join table this isn't complete, but should get you started:
$query = db_select('node', 'n')
->fields('n', array('nid', 'sticky', 'title', 'created'))
->condition('n.uid', $user->uid)
->condition('n.type', 'case')
->condition('n.status', 1)
->extend('PagerDefault')
->limit(variable_get('default_nodes_main', 10))
->addTag('node_access')
->orderBy('col_name');
$query->join('table_to_join', 'table_alias', 'table_alias.nid = n.nid');
foreach ($query->execute() as $row) {
// Do what you need to
}

Answer 2

if ($vidw == 'my_cases' or $vidw == 'my') { // including private
switch ($sort_by) {
case 'rated':
$order = 'n.sticky DESC, vc.value DESC';
$sort_join = 'LEFT OUTER JOIN {votingapi_cache} vc ON n.nid = vc.content_id AND vc.content_type = "node" AND vc.function = "average"';
break;
case 'discussed':
$order = 'n.sticky DESC, nc.comment_count DESC';
$sort_join = 'LEFT OUTER JOIN {node_comment_statistics} nc ON n.nid = nc.nid';
break;
case 'viewed':
$order = 'n.sticky DESC, nc.totalcount DESC';
$sort_join = 'LEFT OUTER JOIN {node_counter} nc ON n.nid = nc.nid';
break;
case 'recent':
default:
$order = 'n.sticky DESC, n.created DESC';
$sort_join = '';
break;
}
// from taxonomy_select_nodes
$sql = 'SELECT DISTINCT(n.nid), n.sticky, n.title, n.created FROM {node} n '.$sort_join.' WHERE n.uid = %d AND n.type = "case" AND n.status = 1 ORDER BY '. $order;
$sql_count = 'SELECT COUNT(DISTINCT(n.nid)) FROM {node} n WHERE n.uid = %d AND n.type = "case" AND n.status = 1';
$args = array('uid' => $user->uid);
$sql = db_rewrite_sql($sql);
$sql_count = db_rewrite_sql($sql_count);
if ($pager) {
$result = pager_query($sql, variable_get('default_nodes_main', 10), 0, $sql_count, $args);
}
else {
$result = db_query_range($sql, $args, 0, variable_get('feed_default_items', 10));
}
// $output .= taxonomy_render_nodes($result);
$num_rows = FALSE;
while ($node = db_fetch_object($result)) {
$output .= node_view(node_load($node->nid), 1);
$num_rows = TRUE;dsm($output);
}
if ($num_rows) {
$output .= theme('pager', NULL, variable_get('default_nodes_main', 10), 0);
}
else {
$output .= '<p>'. t('There are currently no visible cases in this category.') .'</p>';
}
}
In above drupal 6 code, i have updated the query which gives me result but node_view() and theme() does not work.