我正在使用MS SQL Server。
我有下表：
SKU Shop WeekNum ShopPrioirty Replen OpeningStock
111 100 1 1 10 5000
111 200 1 2 10 NULL
111 300 1 3 5 NULL
111 400 1 4 8 NULL
222 100 2 1 20 6000
222 200 2 2 15 NULL
222 300 2 3 12 NULL
222 400 2 4 10 NULL
这是期望的结果：
SKU Shop WeekNum ShopPrioirty Replen OpeningStock
111 100 1 1 10 5000
111 200 1 2 10 4990
111 300 1 3 5 4980
111 400 1 4 8 4975
222 100 2 1 20 6000
222 200 2 2 15 5980
222 300 2 3 12 5965
222 400 2 4 10 5953
在给定的一周内，SKU存在于多家商店中，并被分配了优先级。在优先级1，分配期初存货。
但是，我需要更新期初存量（当前为NULL）以等于先前的期初存量减去先前的Replen。
在尝试更新之前，我尝试执行SELECT
SELECT SKU
,Shop
,WeekNum
,StorePriority
,Replen
,OpeningStock
,OpeningStock - Replen OVER (ORDER BY SKU,Shop,WeekNum ROWS UNBOUNDED PRECEDING) AS Opening
FROM [table1] t
但是我收到错误消息：Incorrect syntax near the keyword 'OVER'.
运行总和是正确的方法吗？
最好创建一个由SKU \ Shop \ WeekNum \ Priority组成的密钥吗？
谢谢。
答案 0 :(得分：5)
我在您的class HereMapViewController: UIViewController {
@IBOutlet private weak var mapView: NMAMapView!
fileprivate var navigationManager = NMANavigationManager.sharedInstance()
var route : NMAMapRoute?
// MARK: - life cycle
override func viewDidLoad() {
super.viewDidLoad()
setupUI()
}
deinit {
navigationManager.stop()
}
// MARK: - private
private func setupUI() {
mapView.copyrightLogoPosition = .center
mapView.zoomLevel = 10
mapView.positionIndicator.isVisible = true
mapView.gestureDelegate = self
navigationManager.voicePackageMeasurementSystem = NMAMeasurementSystem.imperialUS
navigationManager.backgroundNavigationEnabled = true
navigationManager.isVoiceEnabled = true
navigationManager.delegate = self
setupRoute()
}
private func setupRoute() {
guard let mapRoute = route, let routeStart = mapRoute.route.start else {
return
}
let start = NMAGeoCoordinates(latitude: routeStart.navigablePosition.latitude,
longitude: routeStart.navigablePosition.longitude)
mapView.add(mapObject: mapRoute)
mapView.set(boundingBox: mapRoute.route.boundingBox!, animation: NMAMapAnimation.none)
startNavigation()
mapView.set(geoCenter: start, animation: .none)
}
private func startNavigation() {
guard let route = route else {
return
}
navigationManager.map = mapView
NMAPositioningManager.sharedInstance().dataSource = NMAHEREPositionSource()
navigationManager.startTurnByTurnNavigation(route.route)
navigationManager.mapTrackingEnabled = false
navigationManager.mapTrackingAutoZoomEnabled = false
navigationManager.mapTrackingOrientation = .dynamic
navigationManager.isSpeedWarningEnabled = true
}
}
//MARK: - NMANavigationManagerDelegate
extension HereMapViewController : NMANavigationManagerDelegate {
// Signifies that there is new instruction information available
func navigationManager(_ navigationManager: NMANavigationManager, didUpdateManeuvers currentManeuver: NMAManeuver?, _ nextManeuver: NMAManeuver?) {
print("didUpdateManeuvers")
}
// Signifies that the system has found a GPS signal
func navigationManagerDidFindPosition(_ navigationManager: NMANavigationManager) {
print("New position has been found")
}
func navigationManager(_ navigationManager: NMANavigationManager, didFindAlternateRoute routeResult: NMARouteResult) {
print("didFindAlternateRoute")
}
func navigationManager(_ navigationManager: NMANavigationManager, didUpdateRoute routeResult: NMARouteResult) {
print("didUpdateRoute")
}
}
//MARK: - NMAMapGestureDelegate
extension HereMapViewController : NMAMapGestureDelegate {
func mapView(_ mapView: NMAMapView, didReceiveTwoFingerPan translation: CGPoint, at location: CGPoint) {
navigationManager.mapTrackingAutoZoomEnabled = false
}
}
和PARTITION BY子句中做了两个假设，但这可以使您获得想要的结果。由于您在ORDER BY的第一行中只有一个OpeningStock的值，因此我使用SKU来获得第一个值，然后除去所有先前 > FIRST_VALUE的值：
Replen