在哪里可以找到 Drupal 7 DB 模式？

Question

我在 Drupal 6 中有这个查询

SELECT term_data.tid AS tid,
   term_data.name AS term_data_name,
   term_data.vid AS term_data_vid,
   term_data.weight AS term_data_weight
 FROM term_data term_data 
 LEFT JOIN term_node term_node ON term_data.tid = term_node.tid
 INNER JOIN node node_term_node ON term_node.vid = node_term_node.vid

如何将那个迁移到 Drupal 7 架构？我有这样的东西，但它不起作用

SELECT
taxonomy_term_data.tid,
taxonomy_term_data.vid,
taxonomy_term_data.name
FROM
taxonomy_term_data
LEFT JOIN taxonomy_index ON taxonomy_term_data.tid = taxonomy_index.tid
Inner Join node ON taxonomy_index.vid = node.vid

问题是 taxonomy_index.vid 不存在。

我还没有找到 drupal 7 数据库模式文档，知道吗？请 谢谢

Answer 1

$terms = db_select('term_data', 'td')
  ->fields('td', array('tid', 'name', 'vid', 'weight'))
  ->leftJoin('term_node', 'tn', 'td.tid = tn.tid')
  ->join('node', 'n', 'tn.vid = n.vid')
  ->execute();

foreach ($terms as $term) {
  // do something with $term
}

提示：有时将所有错误串在一起时很难发现错误。或者，您可以一次设置每一行，错误似乎报告得更好。

$query = db_select('term_data', 'td');
$query->fields('td', array('tid', 'name', 'vid', 'weight'));
$query->leftJoin('term_node', 'tn', 'td.tid = tn.tid');
$query->join('node', 'n', 'tn.vid = n.vid');
$terms = $query->execute();