判断 SQLServer 触发器类型，支持多行

直接上代码吧：

ALTER TRIGGER [dbo].[tgr_forOpType]
ON [dbo].[OpTypeLog]
FOR  INSERT, UPDATE, DELETE 
AS
begin
declare @id int
declare @tableName varchar(50)
set @tableName = 'TableName'
declare @opType varchar(50)
--insert--------------------------------------------------------
    if exists(select * from inserted) and not exists (select * from deleted)
    begin
        set @opType = 'insert'
        declare cur cursor
        for select * from inserted
        open cur
        fetch next from cur
        --into @id
        while @@fetch_status = 0
        begin
            insert into [log](OpType,TableName) values (@opType,@tableName)
            fetch cur --into @id
        end
        close cur
        deallocate cur
    end
--delete--------------------------------------------------------
if exists(select * from deleted) and not exists (select * from inserted)
    begin
        set @opType = 'delete'
        declare cur cursor
        for select * from deleted
        open cur
        fetch next from cur
        --into @id
        while @@fetch_status = 0
        begin
            insert into [log](OpType,TableName) values (@opType,@tableName)
            fetch cur --into @id
        end
        close cur
        deallocate cur
    end
--update--------------------------------------------------------
if exists(select * from deleted) and exists (select * from inserted)
    begin
        set @opType = 'update'
        declare cur cursor
        for select * from deleted
        open cur
        fetch next from cur
        --into @id
        while @@fetch_status = 0
        begin
            insert into [log](OpType,TableName) values (@opType,@tableName)
            fetch cur --into @id
        end
        close cur
        deallocate cur
    end
end