sqlserver+支持多表联合查询分页存储过程

CREATE PROCEDURE usp_PagingLarge
@TableNames VARCHAR(300), --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(350), --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 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 = 0 output
AS
BEGIN
DECLARE @SortColumn VARCHAR(200)
DECLARE @Operator CHAR(2)
DECLARE @SortTable VARCHAR(200)
DECLARE @SortName VARCHAR(200)
DECLARE @TmpSelect NVarchar(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=https://www.wendangku.net/doc/e813809023.html,, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
WHERE https://www.wendangku.net/doc/e813809023.html, = @SortTable AND https://www.wendangku.net/doc/e813809023.html, = @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 + '
')
DECLARE @str_Count_SQL nvarchar(500)
SET @str_Count_SQL= 'SELECT @TotalCount=count('+@PrimaryKey+') FROM ' + @TableNames + ' ' + @Filter
EXEC sp_executesql @str_Count_SQL,N'@TotalCount int=0 output',@RecordCount output
End
GO
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