我的 SQL Anywhere 12.0.1 数据库有两个表:
CREATE TABLE "ListDetails" (
ListDetailId UNIQUEIDENTIFIER NOT NULL PRIMARY KEY,
ListId UNIQUEIDENTIFIER NOT NULL,
CountryId VARCHAR(3) NULL REFERENCES "Countries" ( CountryId ) DEFAULT 'USA',
LocaleCode VARCHAR(3) NULL REFERENCES "Locales" ( LocaleCode ),
Plate VARCHAR(50) NULL,
HashedPlate UNIQUEIDENTIFIER NULL,
AlarmClassId INT NULL REFERENCES "AlarmClasses" ( AlarmClassId ),
BeginDate DATETIME NULL,
EndDate DATETIME NULL,
ListPriorityId INT NULL REFERENCES "ListPriorities" ( ListPriorityId ),
VehicleTypeId INT NULL REFERENCES "VehicleTypes" ( VehicleTypeId ),
PlateClassId INT NULL REFERENCES "PlateClasses" ( PlateClassId ),
MakeId INT NULL REFERENCES "VehicleBrands" ( VehicleBrandId ),
ModelId INT NULL REFERENCES "VehicleModels" ( VehicleModelId ),
"Year" INT NULL,
ColorId INT NULL REFERENCES "VehicleColors" ( VehicleColorId ),
Notes VARCHAR(8000) NULL,
OfficerNotes VARCHAR(8000) NULL,
IsNewRow BIT NOT NULL DEFAULT '1',
CreatedDate DATETIME NOT NULL DEFAULT NOW(),
i_active SMALLINT NOT NULL DEFAULT 1,
ModifyDate DATETIME NULL,
Subscriber UNIQUEIDENTIFIER NULL,
FromToVersion BIGINT NOT NULL,
FromVersion BIGINT,
InstanceId UNIQUEIDENTIFIER NOT NULL UNIQUE
);
和:
CREATE GLOBAL TEMPORARY TABLE "ListDetailsLoad" (
ListDetailId UNIQUEIDENTIFIER NOT NULL,
ListId UNIQUEIDENTIFIER NOT NULL,
CountryId VARCHAR(3) NULL,
LocaleCode VARCHAR(3) NULL,
Plate VARCHAR(50) NULL,
HashedPlate UNIQUEIDENTIFIER NULL,
AlarmClassId INT NULL,
BeginDate DATETIME NULL,
EndDate DATETIME NULL,
ListPriorityId INT NULL,
VehicleTypeId INT NULL,
PlateClassId INT NULL,
MakeId INT NULL,
ModelId INT NULL,
"Year" INT NULL,
ColorId INT NULL,
Notes VARCHAR(8000) NULL,
OfficerNotes VARCHAR(8000) NULL,
Subscriber UNIQUEIDENTIFIER NULL,
InstanceId UNIQUEIDENTIFIER NOT NULL
) NOT TRANSACTIONAL;
我的程序(用 C# 编写)对 ListDetailsLoad 表执行大容量复制,然后运行存储过程。存储过程的工作是将数据移动到 ListDetails 表中。这是存储过程:
MERGE INTO "ListDetails" AS dst
USING "ListDetailsLoad" AS src
ON dst.ListDetailId = src.ListDetailId
WHEN MATCHED THEN UPDATE
SET ListDetailId = src.ListDetailId,
ListId = src.ListId,
CountryId = src.CountryId,
LocaleCode = src.LocalCode,
Plate = src.Plate,
HashedPlate = src.HashedPlate,
AlarmClassId = src.AlarmClassId,
BeginDate = src.BeginDate,
EndDate = src.EndDate,
ListPriorityId = src.ListPriorityId,
VehicleTypeId = src.VehicleType,
PlateClassId = src.PlateClassId,
MakeId = src.MakeId,
ModelId = src.ModelId,
"Year" = src."Year",
ColorId = src.ColorId,
Notes = src.Notes,
OfficerNotes = src.OfficerNotes,
ModifyDate = NOW(),
FromToVersion = dbVersion.NEXTVAL,
FromVersion = NULL,
Subscriber = src.Subscriber,
InstanceId = src.InstanceId
WHEN NOT MATCHED THEN INSERT
( ListDetailId, ListId, CountryId, LocaleCode, Plate, HashedPlate,
AlarmClassId, BeginDate, EndDate, ListPriorityId, VehicleTypeId, PlateClassId,
MakeId, ModelId, "Year", ColorId, Notes, OfficerNotes,
ModifyDate, FromToVersion, Subscriber, FromVersion, InstanceId )
VALUES
( src.ListDetailId, src.ListId, src.CountryId, src.LocaleCode, src.Plate, src.HashedPlate,
src.AlarmClassId, src.BeginDate, src.EndDate, src.ListPriorityId, src.VehicleTypeId, src.PlateClassId,
src.MakeId, src.ModelId, src."Year", src.ColorId, src.Notes, src.OfficerNotes,
NOW(), dbVersion.NEXTVAL, NULL, src.Subscriber, src.InstanceId );
TRUNCATE TABLE "ListDetailsLoad";
END;
这编译得很好。问题是当我运行它时,我收到以下错误消息:
Could not execute statement. Column "ListDetailId" found in more than one table or it is used more than once in the SELECT list -- it needs a correlation name.
如何修复 MERGE 语句?