drupal 7 sql语法

Question

我正在尝试获得一个结果集，该结果集显示来自 2 个不同表的 2 列，按一列分组并对另一列求和。

这个 sql 在 phpmyadmin 中工作：

SELECT SUM(field_count_value), field_region_value
FROM field_data_field_count, field_data_field_region
WHERE field_data_field_count.entity_id = field_data_field_region.entity_id
GROUP BY field_data_field_region.field_region_value
ORDER BY field_count_value DESC

大致显示我需要的内容::

-----------------
COUNT    REGION
-----------------
4000     S
600      E
-----------------

但是当我将其转换为 drupal 7 sql 查询语法时：

$nodes = db_query("SELECT SUM(field_count_value), field_region_value
FROM field_data_field_count, field_data_field_region
WHERE field_data_field_count.entity_id = field_data_field_region.entity_id
GROUP BY field_data_field_region.field_region_value
ORDER BY field_count_value DESC");

foreach ($nodes as $record) {
  echo $record->field_region_value . $record->field_count_value; 
  }

我只能按列分组显示：

-----------------
REGION
-----------------
S
E
-----------------

任何帮助将不胜感激。我已经咨询了官方 d7 文档以了解这一点——从那里可以使用的示例并不多。

Answer 1

你需要做的

$nodes = db_query("SELECT SUM(field_count_value) AS field_count_value, field_region_value
FROM field_data_field_count, field_data_field_region
WHERE field_data_field_count.entity_id = field_data_field_region.entity_id
GROUP BY field_data_field_region.field_region_value
ORDER BY field_count_value DESC");

否则第一列称为“SUM(field_count_value)”