Question

我有两个表：

T1 ：

CODE  FULL_NAME

和 T2 ：

CODE   FIRST_NAME   LAST_NAME

所有列的类型均为NVARCHAR。

CODE中的某些T1单元为空，我需要从T2中获取它们。我需要在FULL_NAME中使用T1信息，并在LAST_NAME的{{1}}和FIRST_NAME列中进行搜索。如何写这样的T2？

到目前为止，我写的是：

UPDATE

LEN（child_iin）<1;

但未成功。

编辑：

我不能只使用UPDATE IMPORT_DATA.RDBS_DATA_STORAGE SET child_iin = pd.iin FROM IMPORT_DATA.RDBS_DATA_STORAGE INNER JOIN nedb.PERSONAL_DATA pd ON child_iin LIKE 'N' + '%' + pd.LAST_NAME + '%' + ' ' + 'N' + '%' + pd.FIRST_NAME + '%'，因为我会遇到WHERE t1.FULL_NAME=t2.FIRST_NAME + ' ' + t2.LAST_NAME = t1.FULL_NAME和'Jorsh Arthur Weasley' = t1.FIRST_NAME，{{1} } = {'William'。

也。

我需要使用t2.LAST_NAME，因为正如我所说的，列是'Weasley'的类型，并且那里有非ASCII字母，所以例如：

N不重播任何内容，要解决此问题，我必须添加NVARCHAR：SELECT * FROM T1 WHERE CODE = 'Неважно'返回一行。

Answer 1

您可以在下面尝试

UPDATE T1 SET T1.CODE = T2.Code 
From T1
Join T2 on t1.FULL_NAME= t2.FIRST_NAME + ' ' +t2.LAST_NAME

Answer 2

我认为您很简单：

UPDATE t1
    SET t1.code = t2.code
FROM t1 INNER JOIN
     t2
     ON t1.FULL_NAME = t2.FIRST_NAME + ' ' + t2.LAST_NAME
WHERE t1.code IS NULL;

Answer 3

这是答案：

- (void)DrawCurvedPolylineOnMapFrom:(CLLocationCoordinate2D)startLocation To:(CLLocationCoordinate2D)endLocation
{
    GMSMutablePath * path = [[GMSMutablePath alloc]init];
    [path addCoordinate:startLocation];
    [path addCoordinate:endLocation];
    // Curve Line
    double k = 0.2; //try between 0.5 to 0.2 for better results that suits you
    CLLocationDistance d = GMSGeometryDistance(startLocation, endLocation);
    float h = GMSGeometryHeading(startLocation , endLocation);

    //Midpoint position
    CLLocationCoordinate2D p = GMSGeometryOffset(startLocation, d * 0.5, h);
    //Apply some mathematics to calculate position of the circle center
    float x = (1-k*k)*d*0.5/(2*k);
    float r = (1+k*k)*d*0.5/(2*k);
    CLLocationCoordinate2D c = GMSGeometryOffset(p, x, h + -90.0);

    //Polyline options
    //Calculate heading between circle center and two points
    float h1 =  GMSGeometryHeading(c, startLocation);
    float h2 = GMSGeometryHeading(c, endLocation);
    //Calculate positions of points on circle border and add them to polyline options
    float numpoints = 100;
    float step = ((h2 - h1) / numpoints);
    for (int i = 0; i < numpoints; i++) {
        CLLocationCoordinate2D pi = GMSGeometryOffset(c, r, h1 + i * step);
        [path addCoordinate:pi];
    }

    //Draw polyline
    GMSPolyline * polyline = [GMSPolyline polylineWithPath:path];
    polyline.map = mapView;
    polyline.strokeWidth = 3.0;
    NSArray *styles = @[[GMSStrokeStyle solidColor:kBaseColor],
                        [GMSStrokeStyle solidColor:[UIColor clearColor]]];

    NSArray *lengths = @[@5, @5];

    polyline.spans = GMSStyleSpans(polyline.path, styles, lengths, kGMSLengthRhumb);

    GMSCoordinateBounds * bounds = [[GMSCoordinateBounds alloc]initWithCoordinate:startLocation coordinate:endLocation];
    UIEdgeInsets insets = UIEdgeInsetsMake(20, 20, 20, 20);
    GMSCameraPosition * camera = [mapView cameraForBounds:bounds insets:insets ];
    [mapView animateToCameraPosition:camera];

}

UPDATE IMPORT_DATA.RDBS_DATA_STORAGE SET child_iin = pd.iin FROM IMPORT_DATA.RDBS_DATA_STORAGE INNER JOIN nedb.PERSONAL_DATA pd ON child_iin LIKE '%' + pd.LAST_NAME + '%' + ' ' + '%' + pd.FIRST_NAME + '%' WHERE LEN(child_iin) < 1;是不必要的

来自另一个表的列值的SQL Server UPDATE列值

3 个答案: