psycopg2 postgres sql 求和和计数 returns 格式不符合 json.dump

Question

我有以下查询：

import psycopg2
import simplejson as json


payload = {
   "type": type,
   "creators": None,
   "type_count": None,
   "total_monitary_action_count": None
  }

cur.execute('''
      SELECT SUM(currentmonitaryactioncount) as totalmonitaryactioncount , COUNT(*) as totalnumberofcreators
      FROM users_contentcreatorusers
      WHERE approvedcreator = true AND ''' + str(type) + ''' = true
      ''')

然后

 record = cur.fetchall()
 record = json.dumps(record)
 print('here is the record dump thing')
 print(record)
 payload["total_monitary_action_count"] = record[0]
 payload["type_count"] = record[1]

打印出来

here is the record dump thing
[[102923243, 2043]]

这是我的

的结果

payload["total_monitary_action_count"] = record[0]
payload["type_count"] = record[1]

'type_count': '[', 'total_monitary_action_count': '['}

现在我看到了双 [] 我尝试 record[0][0] 但没有积极效果。

我哪里做错了。

Answer 1

由于结果是列表中的列表，因此您应该将数据检索为

payload["total_monitary_action_count"] = record[0][0]
payload["type_count"] = record[0][1]

并删除将序列化结果的以下行，在这种情况下我不明白为什么需要它。

record = json.dumps(record)

psycopg2 postgres sql 求和和计数 returns 格式不符合 json.dump

psycopg2 postgres sql request of sum and count returns format which is not respecting json.dump

postgresql

json

psycopg2

simplejson