Create PROCEDURE usp_PagingLarge
@TableNames VARCHAR(200), --表名，可以是多个表，但不能用别名
@PrimaryKey VARCHAR(100), --主键，可以为空，但@Order为空时该值不能为空
@Fields VARCHAR(4000), --要取出的字段，可以是多个表的字段，可以为空，为空表示select *
@PageSize INT, --每页记录数
@CurrentPage INT, --当前页，0表示第1页
@Filter VARCHAR(4000) = '', --条件，可以为空，不用填 where
@Group VARCHAR(200) = '', --分组依据，可以为空，不用填 group by
@Order VARCHAR(200) = '', --排序，可以为空，为空默认按主键升序排列，不用填 order by
@RecordCount int OUTPUT --总记录数,自己增加（总记录数）
AS
BEGIN
DECLARE @SortColumn VARCHAR(200)
DECLARE @Operator CHAR(2)
DECLARE @SortTable VARCHAR(200)
DECLARE @SortName VARCHAR(200)
IF @Fields = ''
SET @Fields = '*'
IF @Filter = ''
SET @Filter = 'Where 1=1'
ELSE
SET @Filter = 'Where ' + @Filter
IF @Group <>''
SET @Group = 'GROUP BY ' + @Group
IF @Order <> ''
BEGIN
DECLARE @pos1 INT, @pos2 INT
SET @Order = REPLACE(REPLACE(@Order, ' asc', ' ASC'), ' desc', ' DESC')
IF CHARINDEX(' DESC', @Order) > 0
IF CHARINDEX(' ASC', @Order) > 0
BEGIN
IF CHARINDEX(' DESC', @Order) < CHARINDEX(' ASC', @Order)
SET @Operator = '<='
ELSE
SET @Operator = '>='
END
ELSE
SET @Operator = '<='
ELSE
SET @Operator = '>='
SET @SortColumn = REPLACE(REPLACE(REPLACE(@Order, ' ASC', ''), ' DESC', ''), ' ', '')
SET @pos1 = CHARINDEX(',', @SortColumn)
IF @pos1 > 0
SET @SortColumn = SUBSTRING(@SortColumn, 1, @pos1-1)
SET @pos2 = CHARINDEX('.', @SortColumn)
IF @pos2 > 0
BEGIN
SET @SortTable = SUBSTRING(@SortColumn, 1, @pos2-1)
IF @pos1 > 0
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, @pos1-@pos2-1)
ELSE
SET @SortName = SUBSTRING(@SortColumn, @pos2+1, LEN(@SortColumn)-@pos2)
END
ELSE
BEGIN
SET @SortTable = @TableNames
SET @SortName = @SortColumn
END
END
ELSE
BEGIN
SET @SortColumn = @PrimaryKey
SET @SortTable = @TableNames
SET @SortName = @SortColumn
SET @Order = @SortColumn
SET @Operator = '>='
END
DECLARE @type varchar(50)
DECLARE @prec int
Select @type=t.name, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
Where o.name = @SortTable AND c.name = @SortName
IF CHARINDEX('char', @type) > 0
SET @type = @type + '(' + CAST(@prec AS varchar) + ')'
DECLARE @TopRows INT
SET @TopRows = @PageSize * @CurrentPage + 1
print @TopRows
print @Operator
EXEC('
DECLARE @SortColumnBegin ' + @type + '
SET ROWCOUNT ' + @TopRows + '
Select @SortColumnBegin=' + @SortColumn + ' FROM ' + @TableNames + ' ' + @Filter + ' ' + @Group + ' orDER BY ' + @Order + '
SET ROWCOUNT ' + @PageSize + '
Select ' + @Fields + ' FROM ' + @TableNames + ' ' + @Filter + ' AND ' + @SortColumn + '' + @Operator + '@SortColumnBegin ' + @Group + ' orDER BY ' + @Order + '
')
IF @RecordCount IS NULL
BEGIN
DECLARE @sql nvarchar(4000)
SET @sql=N'SELECT @RecordCount=COUNT(*)'
+N' FROM '+@TableNames
+N' '+@Filter
EXEC sp_executesql @sql,N'@RecordCount int OUTPUT',@RecordCount OUTPUT
END
END
GO
--调用例子：
--1.单表/单排序
EXECusp_PagingLarge'bigtable','d_id','d_id,d_title,d_content,d_time',20,1,'','','d_iddesc'
--2.单表/多排序
EXECusp_PagingLarge'bigtable','d_id','*',20,0,'','','d_timeasc,d_iddesc'
--3.多表/单排序
EXEC usp_PagingLarge'bigtable left join bigtable_author on bigtable.d_id=bigtable_author.BigTable_id','bigtable.d_id','bigtable.d_id,bigtable.d_title,bigtable.d_content,bigtable.d_time,bigtable_author.d_author',20,0,'','','bigtable.d_idasc'
--4.多表/多排序
EXEC usp_PagingLarge'bigtableleftjoinbigtable_authoronbigtable.d_id=bigtable_author.BigTable_id','bigtable.d_id','bigtable.d_id,bigtable.d_title,bigtable.d_content,bigtable.d_time,bigtable_author.d_author',20,0,'','','bigtable.d_timeasc,bigtable.d_iddesc'
public DataTable ExecMultiPageList(string tableName,string iDName,string Fields,int pageSize,int currentPage,string Filter,string Group,string Order,out int rowCount)
{
int rowCount=0;
// @TableNames VARCHAR(200),--表名，可以是多个表，但不能用别名
//@PrimaryKey VARCHAR(100),--主键，可以为空，但@Order为空时该值不能为空
//@Fields VARCHAR(200),--要取出的字段，可以是多个表的字段，可以为空，为空表示select*
//@PageSize INT,--每页记录数
//@CurrentPage INT,--当前页，0表示第1页
//@Filter VARCHAR(200)='',--条件，可以为空，不用填where
//@Group VARCHAR(200)='',--分组依据，可以为空，不用填groupby
//@Order VARCHAR(200)=''--排序，可以为空，为空默认按主键升序排列，不用填orderby
SqlParameter[] parameters = {
new SqlParameter("@TableName",SqlDbType.VarChar,200),
new SqlParameter("@PrimaryKey",SqlDbType.VarChar,100),
new SqlParameter("@Fields",SqlDbType.VarChar,200),
new SqlParameter("@PageSize",SqlDbType.Int,4),
new SqlParameter("@CurrentPage",SqlDbType.Int,4),
new SqlParameter("@Filter",SqlDbType.VarChar,200),
new SqlParameter("@Group",SqlDbType.VarChar,200),
new SqlParameter("@Order",SqlDbType.VarChar,200),
new SqlParameter("@RecordCount",SqlDbType.Int,4)
};//参数列表
parameters[0].Value = tableName;
parameters[1].Value = iDName;
parameters[2].Value = Fields;
parameters[3].Value = pageSize;
parameters[4].Value = currentPage;
parameters[5].Value = Filter;
parameters[6].Value = Group;
parameters[7].Value = Order;//参数对应值
parameters[8].Value = rowCount;
parameters[8].Direction = ParameterDirection.Output;
SqlCommand cmd = new SqlCommand();
cmd.Connection = Connection;
cmd.CommandText = "usp_PagingLarge";//存储过程名
cmd.CommandType = CommandType.StoredProcedure;//类型
cmd.Parameters.AddRange(parameters);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
CloseDB();
rowCount = Convert.ToInt32(parameters[8].Value);//输出
return dt;
}
