Question

大家好我有一张桌子（商店）有3列：

id receipt_number receipt_date 111 666 02/02/2016 111 666 02/02/2016 111 667 02/03/2016 112 668 02/02/2016 112 669 03/02/2015 112 670 04/12/2015 113 671 05/11/2013

我想查询查找去年每个id购买了多少次。决赛桌：

id      bought
111     2
112     2

111 have 2 shop because in database have 2 equals receipt
112 have 2 shop because in database one shop It is a year old
113 there is not because the only shop it has been done years ago.

现在我已经这样做了：

SELECT DISTINCT(id),receipt_number,receipt_date FROM shop where receipt_number in (SELECT distinct(receipt_number) FROM shop) GROUP BY(id) 但完全错了

感谢所有人，抱歉我的英语不好

我找到了结果，谢谢所有

select id, count(*)shop_number from (select id,recipt_Date,recipt_number from shop where id !='' and recipt_date > DATE_ADD(sysdate(), INTERVAL -1 YEAR) and recipt_Date <= sysdate() group by id, recipt_date , recipt_nu,ber) as a group by id

Answer 1

我认为你需要这样的东西：

SELECT id, COUNT(DISTINCT receipt_number)
FROM  shop
WHERE receipt_date BETWEEN DATE_ADD(NOW(), INTERVAL -1 YEAR) AND NOW()
GROUP BY id

Answer 2

您使用group by，where和count(distinct)：

select id, count(distinct receipt_number)
from shop
where receipt_date >= date_sub(curdate(), interval 1 year)
group by id;

Answer 3

SQL Server查询可以是

import com.google.android.gms.common.api.PendingResult;
import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.common.api.Status;
import com.google.android.gms.drive.Drive;
import com.google.android.gms.drive.DriveApi;
import com.google.android.gms.drive.DriveResource;
import com.google.android.gms.drive.events.ChangeEvent;
import com.google.android.gms.drive.events.ChangeListener;

PendingResult<DriveApi.DriveIdResult> pendingResult = Drive.DriveApi.fetchDriveId(mGoogleApiClient, id);
    pendingResult.setResultCallback(new ResultCallback<DriveApi.DriveIdResult>() {
        @Override
        public void onResult(@NonNull DriveApi.DriveIdResult driveIdResult) {
            if (!driveIdResult.getStatus().isSuccess()) {
                Log.d(TAG, String.format("fetch drive id error: %s", driveIdResult.getStatus().getStatusMessage()));
                return;
            }
            mCurrentDriveId = driveIdResult.getDriveId();
            DriveResource resource = mCurrentDriveId.asDriveResource();
            Log.d(TAG, "received driveid from id");

            PendingResult<Status> pendingChange = resource.addChangeListener(mGoogleApiClient, new ChangeListener() {
                @Override
                public void onChange(ChangeEvent changeEvent) {
                    onResourceChange(changeEvent);
                }
            });
            pendingChange.setResultCallback(new ResultCallback<Status>() {
                @Override
                public void onResult(@NonNull Status status) {
                    if (status.isSuccess()) {
                        Log.d(TAG, "change listener success");
                    } else {
                        Log.d(TAG, String.format("change listener error: %s", status.getStatusMessage()));
                    }
                }
            });
        }
    });

查询一年内一个人购买的次数

3 个答案: