我有一个名为{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1493183261000",
"Effect": "Allow",
"Action": [
"dynamodb:BatchGetItem",
"dynamodb:BatchWriteItem",
"dynamodb:DeleteItem",
"dynamodb:DescribeStream",
"dynamodb:DescribeTable",
"dynamodb:GetItem",
"dynamodb:GetRecords",
"dynamodb:GetShardIterator",
"dynamodb:ListStreams",
"dynamodb:ListTables",
"dynamodb:PutItem",
"dynamodb:Query",
"dynamodb:Scan",
"dynamodb:UpdateItem",
"dynamodb:UpdateTable"
],
"Resource": [
"arn:aws:dynamodb:us-east-1:*:table/foo",
"arn:aws:dynamodb:us-east-1:*:table/bar",
"arn:aws:dynamodb:us-east-1:*:table/bar/index/dayKey-captureTime-index"
]
}
]
}
的表,它有5列:dtr
id
student_id
time_in
和time_out
。
我在我的项目中做的是让用户输入一个ID号,然后程序会扫描它,如果ID号在数据库中。如果它在数据库中,则ID号的第一个输入将在date
列中插入数据。在相同ID号的第二个输入上,将在time_in
列中插入数据。
这就是我想要发生的事情:
time_out
答案 0 :(得分:0)
//更新' time_in'在time_out'中有一个值并添加时间您可以使用的栏目:
//Update dtr set student_id=@student_id, time_in=@time_in, time_out=@time_out, date=@date where ID = @id;
Update dtr set time_in=@time_in where ID = @id;
插入新行:
Insert into dtr (student_id, time_in,time_out,date) values(@student_id, @time_in, @time_out, @date);