mssql任意连续整数之间的的乘积

任意连续整数之间的的乘积

代码

   
     

    
      
    
      --
    
      任意连续整数之间的的乘积 修改 exce p_test ?,? 数值改变 
    
      
--
    
       author ： 【DBA】小七
    
      

    
      

    
      if
    
       
    
      Exists
    
      (
    
      Select
    
       name 
    
      From
    
       sysobjects 
    
      Where
    
       name
    
      =
    
      '
    
      p_test
    
      '
    
       
    
      And
    
       type
    
      =
    
      '
    
      P
    
      '
    
      )

    
      Drop
    
       
    
      Procedure
    
       p_test
 
    
      Go
    
      

    
      create
    
       
    
      proc
    
       p_test

    
      @start_num
    
       
    
      int
    
      ,

    
      @end_num
    
       
    
      int
    
      

    
      as
    
      

    
      declare
    
       
    
      @cyc
    
       
    
      int
    
      

    
      declare
    
       
    
      @size
    
       
    
      int
    
      

    
      declare
    
       
    
      @count
    
       
    
      int
    
      

    
      begin
    
      

    
      set
    
       
    
      @cyc
    
      =
    
      1
    
      

    
      set
    
       
    
      @size
    
      =
    
      (
    
      @end_num
    
      -
    
      @start_num
    
      )

    
      set
    
       
    
      @count
    
      =
    
      @start_num
    
      

    
      while
    
       
    
      @cyc
    
      <=
    
      @size
    
       

    
      begin
    
      

    
      set
    
       
    
      @start_num
    
      =
    
      @start_num
    
      +
    
      1
    
      

    
      set
    
       
    
      @count
    
      =
    
      @count
    
      *
    
      @start_num
    
      

    
      set
    
       
    
      @cyc
    
      =
    
      @cyc
    
      +
    
      1
    
      

    
      end
    
      

    
      select
    
       
    
      @count
    
      

    
      END
    
      

    
      go
    
      

    
      EXEC
    
       p_test 
    
      1
    
      ,
    
      5