我有一个web api post方法：
------------------------
Condition | NumMessage
------------------------
| 80
Fair | 20
Good | 60
Ideal | 50
Great | 80
如何使用doCountQuerys <- function(con, table) {
query <- paste('
SELECT message_condition Condition,
COUNT(message_id) NumMessage FROM`', table, '` GROUP message_condition', sep = '')
ts <- dbGetQuery(con, query)
return(ts)
}
lists <- dbListTables(con) # get list of all tables in the database
countz <- numeric(0) # store the counts for all tables
for (i in 1:length(list)) {
counta <- doCountQuerys(con, lists[i])
countz[i] <- counta[[1]]
#print(countz[[1]])
}
将## Warning in countz[i] <- counta[[1]]: number of items to replace is not a
## multiple of replacement length
传递给此方法？
我尝试了所有的事情，包括：
[HttpPost]
[ActionName("LoggerAttachment")]
public string PostLoggerAttachment([FromBody] XmlDocument doc)
{
if (doc == null)
return "Data is empty";
}
他们没有工作。
答案 0 :(得分：0)
我终于发现了什么问题。我应该使用select avg(coalesce(ct, 0))
from book b
left join (
select key, count(*) ct
from authorcollection
group by 1
) a
using (key)
where year >= 2000;
代替PostAsJsonAsync。所以以下行对我有用：
PostAsXmlAsync