如何从表1中插入的​​数据更新表2？

Question

您能帮我进行哪些查询，以用另一个表中的数据更新一个表。

我有2个表，例如：

tbl_med_take

| id | name |   med  | qty |
---------------------------------
| 1 | jayson | med2 |  3   |
| 2 |   may   | med2 |  4   |
| 3 | jenny.  | med3 |  6   |
| 4 |   joel.   | med3 |  4   |

tbl_med

| id | med | stocks |
-----------------------------
| 1 | med1 |    20    |
| 2 | med2 |.   17    |
| 3 | med3 |    24    |

我想要的tbl_med输出：

tbl_med

| id | med | stocks |
-----------------------------
| 1 | med1 |    20    |
| 2 | med2 |.   10    |
| 3 | med3 |    14    |

Answer 1

首先使用{p>从from google.oauth2 import id_token from google.auth.transport import requests GOOGLE_CLIENT_ID = '320318792814-qpggflpf15hi7skl53o4vip9q7aod39f.apps.googleusercontent.com' def auth_google(token): CLIENT_ID = GOOGLE_CLIENT_ID try: # Specify the CLIENT_ID of the app that accesses the backend: idinfo = id_token.verify_oauth2_token(token, requests.Request(), CLIENT_ID) print idinfo # Or, if multiple clients access the backend server: # idinfo = id_token.verify_oauth2_token(token, requests.Request()) # if idinfo['aud'] not in [CLIENT_ID_1, CLIENT_ID_2, CLIENT_ID_3]: # raise ValueError('Could not verify audience.') if idinfo['iss'] not in ['accounts.google.com', 'https://accounts.google.com']: raise ValueError('Wrong issuer.') # If auth request is from a G Suite domain: # if idinfo['hd'] != GSUITE_DOMAIN_NAME: # raise ValueError('Wrong hosted domain.') # ID token is valid. Get the user's Google Account ID from the decoded token. auth_user_id = idinfo['sub'] print auth_user_id return auth_user_id except ValueError: # Invalid token pass 获取消耗的总量

med_tbl_take

然后您可以select med,sum(quantity) as total from tbl_med_take group by med 和left join进行相减。

med_tbl

CHECK DEMO HERE