我想将SQL临时表添加到DBContext中的项目中,而不要添加到迁移文件中吗?如何实现呢?编辑:我已将其添加到种子函数中,但仍无法正常工作
protected override void Seed(MSDBContext context)
{
string sql = @" ALTER TABLE dbo.Workshops
ADD SysStartTime datetime2 GENERATED ALWAYS AS ROW START
CONSTRAINT DF_Workshops_SysStartTime DEFAULT SYSUTCDATETIME() NOT NULL,
SysEndTime datetime2 GENERATED ALWAYS AS ROW END
CONSTRAINT DF_Workshops_SysEndTime DEFAULT CONVERT (DATETIME2, '9999-12-31 23:59:59') NOT NULL,
PERIOD FOR SYSTEM_TIME (SysStartTime, SysEndTime)
GO
ALTER TABLE dbo.Workshops
SET (SYSTEM_VERSIONING = ON (HISTORY_TABLE = dbo.WorkshopsHistory))
GO";
context.Database.ExecuteSqlCommand(sql);
context.SaveChanges();
context.Configuration.LazyLoadingEnabled = false;
}
如果您只想创建表,则可以运行即席sql查询。
using (var ctx = new DBDataContext())
{
var rowsEffected = ctx.Database.ExecuteSqlCommand("YOUR SQL TO ADD TABLES");
}
如果这行不通,则不必使用EF,则可以使用旧的ADO.NET sql客户端类来运行查询。