Activerecord查询帮助我

Question

如何在activerecord中进行查询：

SELECT col1, COUNT(col1) AS count FROM tab1 
WHERE col2='sometext' 
GROUP BY col1 
ORDER BY count DESC 
LIMIT 10

预期产出：

col1    count
--------------
name1   247
name5   182
name4   96

Answer 1

这是：

Model
  .select('col1, COUNT(col1) AS count')
  .where(col2: 'sometext')
  .group(:col1)
  .order('count DESC')
  .limit(10)