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