Android DBFlow-与另一个select语句的内部联接
我正在尝试将以下SQL语句转换为DBFlow方法调用:Android DBFlow-与另一个select语句的内部联接,android,sql,sqlite,dbflow,Android,Sql,Sqlite,Dbflow,我正在尝试将以下SQL语句转换为DBFlow方法调用: SELECT t.SSID, t.BSSID, t.Latitude, t.Longitude, t.Timestamp FROM wlan_events t INNER JOIN (SELECT BSSID, MAX(Timestamp) AS MaxTimestamp FROM wlan_events GROUP BY BSSID) groupedt ON t.BSSID = groupedt.BSSID AND t.Timest
SELECT t.SSID, t.BSSID, t.Latitude, t.Longitude, t.Timestamp
FROM wlan_events t
INNER JOIN (SELECT BSSID, MAX(Timestamp) AS MaxTimestamp FROM wlan_events GROUP BY BSSID) groupedt
ON t.BSSID = groupedt.BSSID AND t.Timestamp = groupedt.MaxTimestamp
到目前为止,我得到的是:
SQLite.select(WifiEvent_Table.SSID, WifiEvent_Table.BSSID, WifiEvent_Table.latitude,
WifiEvent_Table.longitude)
.from(WifiEvent.class)
.as("t")
.innerJoin(WifiEvent.class) // ????
)
如何使用dbflow创建内部联接的select语句?我发现:
SELECT EMP_ID, NAME, DEPT FROM COMPANY LEFT OUTER JOIN DEPARTMENT
ON COMPANY.ID = DEPARTMENT.EMP_ID
在DBFlow中:
SQLite.select(Company_Table.EMP_ID, Company_Table.DEPT)
.from(Company.class)
.leftOuterJoin(Department.class)
.on(Company_Table.ID.withTable().eq(Department_Table.EMP_ID.withTable()))
.queryList();
希望这有帮助:(链接更新)
这是我发现的:
SELECT EMP_ID, NAME, DEPT FROM COMPANY LEFT OUTER JOIN DEPARTMENT
ON COMPANY.ID = DEPARTMENT.EMP_ID
在DBFlow中:
SQLite.select(Company_Table.EMP_ID, Company_Table.DEPT)
.from(Company.class)
.leftOuterJoin(Department.class)
.on(Company_Table.ID.withTable().eq(Department_Table.EMP_ID.withTable()))
.queryList();
希望这有帮助:(链接更新)
谢谢,但是您的答案在jointry using.on(new select())中没有任何select语句。谢谢,但是您的答案在jointry using.on(new select())中没有任何select语句