创建存储过程如下：Create proc bookproc @id int ,@title char(20) outputAs Select @title=title from book where id=@id执行该存储过程的方法正确的是（ ） A: Exec bookproc 1,@title outputPrint @title B: exec bookproc @id=1,@title outputPrint @title C: declare @title char(2)Exec bookproc 1,@title outputPrint @title D: declare @title char(20)Exec bookproc @id=1,@title outputPrint @title

创建存储过程如下:<br/>Create<br/>procedure bookproc<br/>@id<br/>int, @title char(20) output<br/>As<br/>Select<br/>@title=title from book where id=@id<br/>执行该存储过程的方法正确的是()。 A: exec bookproc 1, @title output <br/>print<br/>@title B: exec bookproc @id=1, @title output <br/>print<br/>@title C: declare @title char(20)<br/>exec<br/>bookproc 1, @title output <br/>print<br/>@title D: declare @title char(20)<br/>exec<br/>bookproc @id=1, @title output <br/>print<br/>@title