MSSQL分页：查询前几页速度最快的ROW_NUMBER() OVER分页存贮过程

代码

   
     

    
      
    
      CREATE
    
       
    
      PROCEDURE
    
       
    
      [
    
      dbo
    
      ]
    
      .
    
      [
    
      getPagerROWOVER
    
      ]
    
       
 
    
      @PageIndex
    
       
    
      int
    
       
    
      =
    
       
    
      1
    
      ,
 
    
      @PageSize
    
       
    
      int
    
       
    
      =
    
       
    
      10
    
      ,
 
    
      @Tables
    
       
    
      nvarchar
    
      (
    
      1000
    
      ) 
    
      =
    
       
    
      NULL
    
      ,
 
    
      @Fields
    
       
    
      nvarchar
    
      (
    
      2000
    
      ) 
    
      =
    
       
    
      '
    
      *
    
      '
    
      ,
 
    
      @Where
    
       
    
      nvarchar
    
      (
    
      2000
    
      ) 
    
      =
    
       
    
      NULL
    
      ,
 
    
      @GroupBy
    
       
    
      nvarchar
    
      (
    
      2000
    
      ) 
    
      =
    
       
    
      NULL
    
      ,
 
    
      @OrderBy
    
       
    
      nvarchar
    
      (
    
      1000
    
      ) 
    
      =
    
       
    
      NULL
    
      ,
 
    
      @ReturnCount
    
       
    
      int
    
       
    
      =
    
       
    
      0
    
       OUTPUT

    
      AS
    
      

    
      BEGIN
    
      
 
    
      SET
    
       NOCOUNT 
    
      ON
    
      ;
 
    
      declare
    
       
    
      @Sql
    
       
    
      nvarchar
    
      (
    
      4000
    
      ),
    
      @startRowIndex
    
       
    
      int
    
      , 
    
      @maximumRows
    
       
    
      int
    
      ;
 
    
      declare
    
       
    
      @strWhere
    
       
    
      nvarchar
    
      (
    
      2000
    
      )
 
    
      declare
    
       
    
      @strGroupBy
    
       
    
      nvarchar
    
      (
    
      2000
    
      )

 
    
      set
    
       
    
      @startRowIndex
    
       
    
      =
    
       (
    
      @PageIndex
    
       
    
      -
    
       
    
      1
    
      ) 
    
      *
    
       
    
      @PageSize
    
      ;
 
    
      set
    
       
    
      @maximumRows
    
       
    
      =
    
       
    
      @PageSize
    
      ;

 
    
      IF
    
       
    
      @Where
    
       
    
      IS
    
       
    
      NOT
    
       
    
      NULL
    
       
    
      AND
    
       
    
      @Where
    
       
    
      !=
    
       
    
      ''
    
      
 
    
      BEGIN
    
      
 
    
      SET
    
       
    
      @strWhere
    
       
    
      =
    
       
    
      '
    
       WHERE 
    
      '
    
       
    
      +
    
       
    
      @Where
    
      
 
    
      END
    
      
 
    
      ELSE
    
      
 
    
      BEGIN
    
      
 
    
      SET
    
       
    
      @strWhere
    
       
    
      =
    
       
    
      ''
    
      
 
    
      END
    
      
 
    
      IF
    
       
    
      @GroupBy
    
       
    
      IS
    
       
    
      NOT
    
       
    
      NULL
    
       
    
      AND
    
       
    
      @GroupBy
    
       
    
      !=
    
       
    
      ''
    
      
 
    
      BEGIN
    
      
 
    
      SET
    
       
    
      @strGroupBy
    
       
    
      =
    
       
    
      '
    
       GROUP BY 
    
      '
    
       
    
      +
    
       
    
      @GroupBy
    
      
 
    
      END
    
      
 
    
      ELSE
    
      
 
    
      BEGIN
    
      
 
    
      SET
    
       
    
      @strGroupBy
    
       
    
      =
    
       
    
      ''
    
      
 
    
      END
    
      
 
 
    
      set
    
       
    
      @Sql
    
       
    
      =
    
       
    
      '
    
      select 
    
      '
    
       
    
      +
    
       
    
      @Fields
    
       
    
      +
    
       
    
      '
    
       from (select 
    
      '
    
       
    
      +
    
       
    
      @Fields
    
       
    
      +
    
       
    
      '
    
      , ROW_NUMBER() OVER (ORDER BY 
    
      '
    
       
    
      +
    
       
    
      @OrderBy
    
       
    
      +
    
       
    
      '
    
      ) as rownum from 
    
      '
    
       
    
      +
    
       
    
      @Tables
    
       
    
      +
    
       
    
      @strWhere
    
       
    
      +
    
       
    
      @strGroupBy
    
       
    
      +
    
       
    
      '
    
      ) as tmpTable where rownum > 
    
      '
    
       
    
      +
    
       
    
      CONVERT
    
      (
    
      nvarchar
    
      (
    
      10
    
      ), 
    
      @startRowIndex
    
      ) 
    
      +
    
       
    
      '
    
       and rownum <= (
    
      '
    
       
    
      +
    
       
    
      CONVERT
    
      (
    
      nvarchar
    
      (
    
      10
    
      ), 
    
      @startRowIndex
    
      ) 
    
      +
    
       
    
      '
    
       + 
    
      '
    
       
    
      +
    
       
    
      CONVERT
    
      (
    
      nvarchar
    
      (
    
      10
    
      ), 
    
      @maximumRows
    
      ) 
    
      +
    
       
    
      '
    
      )
    
      '
    
      
 
    
      exec
    
      (
    
      @Sql
    
      )
 
    
      print
    
       
    
      @sql
    
      
 
    
      set
    
       
    
      @Sql
    
       
    
      =
    
       
    
      '
    
      select @ReturnCount=COUNT(*) from 
    
      '
    
       
    
      +
    
       
    
      @Tables
    
       
    
      +
    
       
    
      @strWhere
    
      
 
    
      exec
    
       sp_executesql 
    
      @Sql
    
      ,N
    
      '
    
      @ReturnCount int OUTPUT
    
      '
    
      ,
    
      @ReturnCount
    
       OUTPUT
 
    
      print
    
       
    
      @sql
    
      

    
      END