daily_report
我在 postgres和中有两个表summary_songs
。
用于创建表的 Sql 文件位于: https: //nofile.io/f/Ef94rMFRh6C/file.sql
summary_songs
我想在每天结束时更新以下条件:
userid
已经不存在,则daily_report
需要将记录插入到summary_songs
userid
存在,则summary_songs.countid = summary_songs.countid+ daily_report.countid
.我使用以下查询来更新summary_songs
:
insert into summary_songs
(select * from daily_report as B)
on conflict (userid, songd)
do update set countid = countid+excluded.countid ;
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我收到以下错误:
错误:没有与 ON CONFLICT 规范匹配的唯一或排除约束
如何为'i'变量X的所有可能排列生成二进制矩阵,其中"i"可以是1和无穷大之间的任何数字.结果矩阵将具有2 ^ i个唯一行.
对于i = 2,变量x1,x2各自的可能值为1或0,因此得到的矩阵将是:
X1 X2
0 0
0 1
1 0
1 1
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R中是否有任何函数可以生成?
我试过以下功能:
matrix(rbinom(160, 1, 0.5),ncol=5,nrow=(2^5))
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但结果并未显示所有可能的值.
我想在ubuntu上安装R中的lubridate函数.我收到了以下错误.从其他来源了解这与我的系统有关.你能帮我解决这个问题:
> install.packages('lubridate')
Installing package(s) into ‘/home/leader/R/i686-pc-linux-gnu-library/2.15’
(as ‘lib’ is unspecified)
trying URL 'http://cran.rstudio.com/src/contrib/lubridate_1.3.2.tar.gz'
Content type 'application/x-gzip' length 284897 bytes (278 Kb)
opened URL
==================================================
downloaded 278 Kb
* installing *source* package ‘lubridate’ ...
** package ‘lubridate’ successfully unpacked and MD5 sums checked
** R
** data
** moving datasets to lazyload DB
** inst
** preparing package for lazy loading
Error in setClass("Period", contains = c("Timespan", "numeric"), slots = c(year = "numeric", :
unused argument(s) (slots = c(year = …
Run Code Online (Sandbox Code Playgroud) 我正在尝试关注一些通过python代码在LinkedIn上注册的公司,并且根据LinkedIn API文档, 我需要使用oauth2-POST方法来关注公司。
我的查询如下:
我的代码如下:
oauth_token = oauth.Token(key=access_token_key, secret=access_token_secret)
oauth_consumer = oauth.Consumer(key=api_key, secret=api_secret)
signature_method_hmac_sha1 = oauth.SignatureMethod_HMAC_SHA1()
http_method = "POST"
http_handler = urllib.HTTPHandler(debuglevel=_debug)
https_handler = urllib.HTTPSHandler(debuglevel=_debug)
def linkedinreq(url, method, parameters):
req = oauth.Request.from_consumer_and_token(oauth_consumer,
token=oauth_token,
http_method=http_method,
http_url=url,
parameters=parameters)
req.sign_request(signature_method_hmac_sha1, oauth_consumer, oauth_token)
req.to_postdata()
def fetchsamples():
url = "https://api.linkedin.com/v1/people/~/following/companies"
parameters = []
response = linkedinreq(url, "POST", parameters)
fetchsamples()
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