有多個表的子查詢

-1

美好的一天，需要您對我的車輛檢測數據庫提供幫助。你可以看到下面的結構，你可以在這裏看到它http://sqlfiddle.com/#!3/4ab7e。我需要的是提取每個項目至少有一個（1）缺陷或違規的車輛數量。在項目4總計=兩（2）輛車和項目9 = 1車輛下面的模式中。有多個表的子查詢

列需要的是[PROJECT_NAME]，[VEHICLE_TYPE]，[YY]，[毫米]，[總]

-- Vehicle Inspection Database -- 


-- Vehicle_Type Table 

    CREATE TABLE VehicleType 
    ([VehicleTypeId] int, 
    [Type] varchar (36)); 

    INSERT INTO VehicleType ([VehicleTypeId],[Type]) 
    VALUES (1, 'Light Vehicle'), 
     (2, 'Tanker'), 
     (3, 'Goods'); 


-- Car Table 

CREATE TABLE Vehicle 
    ([VehicleID] varchar(36), 
    [PlateNo] varchar(36), 
    [VehicleTypeId] int, 
    [Project] int); 

    INSERT INTO Vehicle ([VehicleID], [PlateNo],[VehicleTypeId], [Project]) 
    VALUES('A57D4151-BD49-4B44-AF10-000F1C298E05', '8112AG', 1, 4), 
     ('C7095628-AE88-4DD0-A4FD-00363EAB767F', '60070 AD2', 2, 9), 
     ('E714CCD7-E56C-46A8-89D5-003CA5BF6094', '68823 AD1', 3, 9); 

-- Event Table 

    CREATE TABLE Event  
    ([EventID] int, 
    [VehicleID] varchar(36), 
    [EventTime] smalldatetime, 
    [TicketStatus] varchar (10)) ;  

INSERT INTO Event([EventID], [VehicleID], [EventTime], TicketStatus) 
VALUES (1, 'A57D4151-BD49-4B44-AF10-000F1C298E05', '20130701', 'Open'), 
     (2, 'A57D4151-BD49-4B44-AF10-000F1C298E05', '20130702', 'Close'), 
     (3, 'A57D4151-BD49-4B44-AF10-000F1C298E05', '20130703', 'Close'), 
     (4, 'C7095628-AE88-4DD0-A4FD-00363EAB767F','20130705', 'Open'), 
     (5, 'C7095628-AE88-4DD0-A4FD-00363EAB767F','20130710', 'Open'); 


-- Event_Defects Table 

    CREATE TABLE EventDefects 
    ([EventDefectsID] int, 
    [EventID] int, 
    [Status] varchar(15), 
    [DefectID] int) ; 

INSERT INTO EventDefects ([EventDefectsID], [EventID], [Status], [DefectID]) 
VALUES 

    -- 1st Inspection for PlateNo. 8112AG 

     (1, 1, 'YES', 1), 
     (2, 1, 'NO', 2), 
     (3, 1, 'YES',3), 
     (4, 1, 'N/A', 4), 
     (5, 1, 'N/A', 5), 

    -- 2nd Inspection for PlateNo. 8112AG 

     (6, 2, 'NO', 1), 
     (7, 2, 'NO', 2), 
     (8, 2, 'NO', 3), 
     (9, 2, 'N/A', 4), 
     (10,2, 'N/A', 5), 

    -- 3rd Inspection for PlateNo. 8112AG 

     (11, 3, 'NO', 1), 
     (12, 3, 'NO', 2), 
     (13, 3, 'NO', 3), 
     (14, 3, 'NO', 4), 
     (15, 3, 'NO', 5), 

    -- 1st Inspection for PlateNo. 60070 AD2 

     (16, 3, 'NO', 1), 
     (17, 3, 'NO', 2), 
     (18, 3, 'NO', 3), 
     (19, 3, 'N/A', 4), 
     (20, 3, 'N/A', 5); 


-- Defects Table 

CREATE TABLE Defects 
    ([DefectID] int, 
    [DefectsName] varchar (36), 
    [DefectClassID] int) ; 

INSERT INTO Defects ([DefectID], [DefectsName], [DefectClassID]) 
VALUES (1, 'TYRE', 1), 
     (2, 'BRAKING SYSTEM', 1), 
     (3, 'MIRRORS AND WINDSCREEN', 2), 
     (4, 'OVER SPEEDING', 3), 
     (5, 'NOT WEARING SEATBELTS', 3); 

-- Defect_Class Table 

    CREATE TABLE DefectClass 
    ([Description] varchar (15), 
    [DefectClassID] int) ; 

INSERT INTO DefectClass ([DefectClassID], [Description]) 
VALUES (1, 'CATEGORY A'), 
    (2, 'CATEGORY B'), 
    (3, 'CATEGORY C');

來源

2014-02-09 user2642629

是否所有的聯接爲內部聯接...，它會消除記錄中是空的。

你可以檢查這是否適合你？

SELECT Vehicle.VehicleID from Vehicle 
INNER JOIN Event ON Vehicle.VehicleID = Event.VehicleID 
INNER JOIN EventDefects ON EventDefects.EventID = Event.EventID 
INNER JOIN Defects ON EventDefects.DefectID = Defects.DefectID 
GROUP BY Vehicle.VehicleID;

來源

2014-02-09 08:35:50

有多個表的子查詢

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