SQL分页常用的两个存储过程

时间:2022-03-28 02:09:25

在做数据绑定时,我们常常会遇到分页事件,下面记录一下分页常用到SQL的两个存储过程

①/****分页数据总数****/
/****** 对象:  StoredProcedure [dbo].[GetRecordCount]

CREATE  PROCEDURE [dbo].[GetRecordCount]
 @tablename nvarchar(100),@column nvarchar(100), @wherestr nvarchar(1000)
AS
declare @execsql nvarchar(2000);
   if @wherestr=''
      begin
           set @execsql='select count('+@column+') as '+@column+' from '+@tablename;
      end
    else
       begin
    set @execsql='select count('+@column+') as '+@column+' from '+@tablename+' where '+@wherestr;
       end
   
    exec(@execsql);
②/***分页****/
/****** 对象:  StoredProcedure [dbo].[GetPageOfRecords]

--创建存储过程
CREATE  PROCEDURE [dbo].[GetPageOfRecords]
  @pageSize int = 20,                                                --分页大小
  @currentPage int ,                                                 --第几页
  @columns varchar(1000) = '*',                            --需要得到的字段
  @tableName varchar(100),                                     --需要查询的表   
  @condition varchar(1000) = '',                         --查询条件, 不用加where关键字
  @ascColumn varchar(100) = '',                            --排序的字段名 (即 order by column asc/desc)
  @bitOrderType bit = 0,                                         --排序的类型 (0为升序,1为降序)
  @pkColumn varchar(50) = ''                                 --主键名称
AS
BEGIN                                                                                    --存储过程开始
  DECLARE @strTemp varchar(300)
  DECLARE @strSql varchar(5000)                            --该存储过程最后执行的语句
  DECLARE @strOrderType varchar(1000)                --排序类型语句 (order by column asc或者order by column desc)
  BEGIN
    IF @bitOrderType = 1                --降序
      BEGIN
        SET @strOrderType = ' ORDER BY '+ @ascColumn+' DESC'
        --SET @strTemp = '<(SELECT min'
      END
    ELSE                  --升序
      BEGIN
        SET @strOrderType = ' ORDER BY '+ @ascColumn+' ASC'
        --SET @strTemp = '>(SELECT max'
      END
    IF @currentPage = 1            --第一页
      BEGIN
        IF @condition != ''
          SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+ @columns+' FROM '+ @tableName+
            ' WHERE '+ @condition+ @strOrderType
        ELSE
          SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+ @columns+' FROM '+ @tableName+@strOrderType
      END
    ELSE                  -- 其他页
      BEGIN
        IF @condition !=''
          SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+ @columns+' FROM '+ @tableName+
          ' WHERE '+ @condition+' AND '+ @pkColumn+ ' not in (SELECT TOP '+STR((@currentPage-1)*@pageSize)+
          ' '+ @pkColumn+' FROM '+ @tableName+' where '+ @condition+ @strOrderType+')'+ @strOrderType
        ELSE
          SET @strSql = 'SELECT TOP '+STR(@pageSize)+' '+ @columns+' FROM '+ @tableName+
          ' WHERE '+ @pkColumn+' not in (SELECT TOP '+STR((@currentPage-1)*@pageSize)+' '+ @pkColumn+
          ' FROM '+ @tableName+ @strOrderType+')'+ @strOrderType
      END
  END
--print @strSql;
  EXEC (@strSql)
END
根据存储过程需要的参数就可以直接调用这两个存储过程了