摘要：一个通用的交叉制表存储过程
一个通用的交叉制表存储过程
原作者:John Papa, Matthew Shepker 1999
整理: 水如烟(http://blog.csdn.net/lzmtw) 2005-5-1
示例:
Use pubs
GO
exec prCrosstab ’stor_id’,’ord_date’,’qty’,’sales’,1,5
结果：
RowHead Year_1992 Year_1993 Year_1994
6380 0 0 8
7066 0 50 75
7067 80 0 10
7131 0 85 45
7896 0 60 0
8042 0 55 25
以下为生成脚本：
if exists (select * from dbo.sysobjects where id = object_id(N’[dbo].[prCrosstab]’) and OBJECTPROPERTY(id, N’IsProcedure’) = 1)
drop procedure [dbo].[prCrosstab]
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
/*
功能:交叉制表
参数 描述
@chrRowHead 表示列,在交叉制表的结果中作为第一出现
@chrColHead 表示列,在交叉制表的结果中该列中的数据被变换为新列名称
@chrValue 表示列,在该列中执行聚合函数
@chrSource 源表或视图
@inyType 1-求和,2-平均值,3-最小值,4-最大值,5-计数
@inyGrouping 1-工作日,2-年内的周数,3-月份,4-季度,5-年份
Author:John Papa Matthew Shepker
整理: 水如烟(http://blog.csdn.net/lzmtw)
日期:5-1-2005
*/
CREATE PROCEDURE prCrosstab
@chrRowHead char(30),
@chrColHead char(30),
@chrValue char(30),
@chrSource char(30),
@inyType tinyint=1,
@inyGrouping tinyint=0
AS
/* Variables for the procedure */
DECLARE
@chvRow varchar(255),
@chvCol varchar(255),
@chvVal varchar(255),
@chvType varchar(10),
@chvRowType varchar(10),
@chvColType varchar(255),
@chvTemp varchar(255),
@chvColTemp varchar(255),
@chvRowTemp varchar(255),
@intType int,
@intRowType int,
@intColType int,
@chvExec varchar(255),
@chvGroup varchar(255),
@fltTemp float,
@dtmTemp datetime,
@insR smallint,
@intColumn int,
@intReturn int,
@intTemp int,
@intColNameLen int,
@intMaxRowHead int
SET NOCOUNT ON
/* Check if source exists */
IF NOT EXISTS
(SELECT *
FROM sysobjects
WHERE name = @chrSource
AND type IN (’v’,’u’))
BEGIN
RAISERROR 51001 ’Source does not exists.’
RETURN -1
END
/* Check for column existence */
IF NOT EXISTS
(SELECT sc.name
FROM syscolumns sc
JOIN sysobjects so ON sc.id = so.id
WHERE so.name = @chrSource
AND sc.name = @chrColHead)
BEGIN
RAISERROR 51002 ’Invalid @chrColHead name.’
RETURN -1
END
IF NOT EXISTS
(SELECT sc.name
FROM syscolumns sc
JOIN sysobjects so ON sc.id = so.id
WHERE so.name = @chrSource
AND sc.name = @chrRowHead)
BEGIN
RAISERROR 51002 ’Invalid @chrRowHead name.’
RETURN -1
END
IF NOT EXISTS
(SELECT sc.name
FROM syscolumns sc
JOIN sysobjects so ON sc.id = so.id
WHERE so.name = @chrSource
AND sc.name = @chrValue)
BEGIN
RAISERROR 51002 ’Invalid @chrValue name.’
RETURN -1
END
/* Verify type is valid (1(sum),2(avg),etc...) */
IF @inyType < 1 OR @inyType > 5
BEGIN
RAISERROR 51000 ’Invalid crosstab type.’
RETURN -1
END
/* Create typestr to hold aggregate name */
SELECT @chvType=
CASE @inyType
WHEN 1 THEN ’SUM’
WHEN 2 THEN ’AVG’
WHEN 3 THEN ’MAX’
WHEN 4 THEN ’MIN’
WHEN 5 THEN ’COUNT’
ELSE ’SUM’
END
/* Getstandard data type of @chrValue column */
SELECT @chvTemp = t2.name
FROM sysobjects o
JOIN syscolumns c ON o.id = c.id
JOIN systypes t1 ON t1.usertype = c.usertype
JOIN systypes t2 ON t1.type = t2.type
WHERE t2.usertype < 100
AND t2.usertype <> 18
AND t2.usertype <> 80
AND o.type IN (’u’,’v’)
AND o.name = @chrSource
AND c.name = @chrValue
/* Categorize types for aggregate check */
SELECT @intTemp =
CASE
WHEN @chvTemp IN (’int’,’smallint’,’tinyint’,’float’,’real’,
’decimal’,’numeric’,’monery’,’smallmoney’) THEN 1
WHEN @chvTemp IN (’datetime’,’smalldatetime’) THEN 3
WHEN @chvTemp IN (’bit’,’char’,’varchar’) THEN 5
ELSE 100
END
/* validate existing data type is consistent with selected aggregate */
IF @inyType < @intTemp
BEGIN
RAISERROR 51020 ’Crosstab type not valid with @chrValue definition.’
RETURN -1
END
/* Hold the data type for future use */
SELECT @chvColType = RTRIM(
CASE @inyType
WHEN 5 THEN ’int’
ELSE CASE
WHEN @chvTemp IN (’bit’,’char’,’varchar’) THEN ’int’
WHEN @chvTemp IN (’decimal’,’numeric’) THEN ’float’
ELSE @chvTemp
END
END)
/* Verify grouping is valid for colhead */
IF @inyGrouping < 0 OR @inyGrouping > 5
BEGIN
RAISERROR 51010 ’Invalid crosstab grouping.’
RETURN -1
END
/* Getstandard data type of @chrColHead column */
SELECT @chvTemp = t2.name
FROM sysobjects o
JOIN syscolumns c ON o.id = c.id
JOIN systypes t1 ON t1.usertype = c.usertype
JOIN systypes t2 ON t1.type = t2.type
WHERE t2.usertype < 100
AND t2.usertype <> 18
AND t2.usertype <> 80
AND o.type IN (’u’,’v’)
AND o.name = @chrSource
AND c.name = @chrColHead
IF UPPER(@chvTemp) NOT IN (’CHAR’,’VARCHAR’)
SELECT @intColtype = 1
ELSE
SELECT @intColtype = 0
/* Get standard data type of @chvRowHead */
SELECT @chvRowType = t2.name
FROM sysobjects o
JOIN syscolumns c ON o.id = c.id
JOIN systypes t1 ON t1.usertype = c.usertype
JOIN systypes t2 ON t1.type = t2.type
WHERE t2.usertype < 100
AND t2.usertype <> 18
AND t2.usertype <> 80
AND o.type IN (’u’,’v’)
AND o.name = @chrSource
AND c.name = @chrRowHead
IF UPPER(@chvRowType) NOT IN (’CHAR’,’VARCHAR’)
SELECT @intRowtype = 1
ELSE
SELECT @intRowtype = 0
/* Categorize types for grouping check */
SELECT @intTemp =
CASE
WHEN @chvTemp IN (’int’,’smallint’,’tinyint’,’float’,’real’,
’decimal’,’numeric’,’monery’,’smallmoney’) THEN 1
WHEN @chvTemp IN (’datetime’,’smalldatetime’) THEN 3
WHEN @chvTemp IN (’bit’,’char’,’varchar’) THEN 5
ELSE 100
END
/* Validate existing data type is consistant with selected grouping */
IF (@intTemp = 5 AND @inyGrouping > 0) OR (@intTemp = 1 AND @inyGrouping > 0)
OR (@intTemp =3 AND @inyGrouping =0)
BEGIN
RAISERROR 51030 ’Crosstab grouping not valid with @chvColHead definition.’
RETURN -1
END
/* Check for permission on source */
IF user_id() <> 1
BEGIN
IF (SELECT COUNT(DISTINCT c.name)
FROM syscolumns c,sysobjects o,sysprotects p,
sysusers u,master..spt_values v
WHERE c.name IN (@chrColHead,@chrRowHead,@chrValue)
AND c.id = o.id
AND p.id = c.id
AND c.colid = v.number
AND v.type = ’p’
AND o.id = object_id(@chrSource)
AND (u.uid = user_id() OR u.uid IN
(SELECT u1.uid
FROM sysusers u1
WHERE u1.gid = u1.uid
AND u1.gid IN
(SELECT u2.gid
FROM sysusers u2
WHERE u2.uid = user_id()
OR u2.uid = user_id(’public’))))
AND p.uid = u.uid
AND p.action = 193
AND p.protecttype = 205
AND columns IS NOT NULL
AND CASE SUBSTRING(p.columns,1,1) & 1
WHEN null THEN 255
WHEN 0 THEN CONVERT(tinyint,SUBSTRING(p.columns,v.low,1))
ELSE (CONVERT(tinyint,ISNULL(SUBSTRING(p.columns,v.low,1),0)))
END & v.high <> 0
AND NOT EXISTS
(SELECT *
FROM syscolumns c5,sysobjects o5,
sysprotects p5,sysusers u5,
master..spt_values v5
WHERE c.name IN (@chrColHead,@chrRowHead,@chrValue)
AND c5.colid = c.colid
AND c5.id = c5.id
AND c5.colid = v5.number
AND v5.type = ’p’
AND o5.id = object_id(@chrSource)
AND (u5.uid = user_id() OR u5.uid IN
(SELECT u6.uid
FROM sysusers u6
WHERE u6.gid = u6.uid
AND u6.gid IN
(SELECT u7.gid
FROM sysusers u7
WHERE u7.uid = user_id()
OR u7.uid = user_id(’public’))))
AND p5.uid = u5.uid
AND p5.action = 193
AND p5.protecttype = 206
AND p5.columns IS NOT NULL
AND CASE SUBSTRING(p5.columns,1,1) & 1
WHEN NULL THEN 255
WHEN 0 THEN CONVERT(tinyint,SUBSTRING(p5.columns,v5.low,1))
ELSE (CONVERT(tinyint,ISNULL(SUBSTRING(p5.columns,v5.low,1),0)))
END & v5.high <> 0)) <> 3
BEGIN
RAISERROR 51003 ’Permission denied on column.’
RETURN -1
END
END
/* Create table #colnames and #rownames */
CREATE TABLE #colnames (colname varchar(255) NULL,colnumber int NULL)
CREATE TABLE #rownames (rowname varchar(255) NULL)
/* Insert distinct column data into #colnames */
SELECT @chvExec = ’insert #colnames select col1,col2 from ’
+ ’(select distinct col1 = ’ +
CASE @intTemp
WHEN 3 THEN
CASE
WHEN @inyGrouping IN (1,3) THEN ’datename(’ +
CASE @inyGrouping
WHEN 1 THEN ’weekday’
WHEN 3 THEN ’month’
END + ’,’ + RTRIM(@chrColHead) + ’)’
ELSE CASE @inyGrouping
WHEN 2 THEN ’’’Week’
WHEN 4 THEN ’’’Quarter’
WHEN 5 THEN ’’’Year’
END + ’_’’ + ’ + ’datename(’ +
CASE @inyGrouping
WHEN 2 THEN ’week’
WHEN 4 THEN ’quarter’
WHEN 5 THEN ’year’
END + ’,’ + RTRIM(@chrColHead)+ ’)’
END
ELSE CASE @intColType
WHEN 1 THEN ’convert(varchar(255), ’ + RTRIM(@chrColHead) + ’)’
ELSE RTRIM(@chrColHead)
END
END + ’,col2 = ’+
CASE @intTemp
WHEN 3 THEN ’datepart(’ +
CASE @inyGrouping
WHEN 1 THEN ’weekday’
WHEN 2 THEN ’week’
WHEN 3 THEN ’month’
WHEN 4 THEN ’quarter’
WHEN 5 THEN ’year’
END + ’,’ + RTRIM(@chrColHead) + ’)’
ELSE ’0’
END + ’,col3 = ’+
CASE @intTemp
WHEN 3 THEN ’datepart(’ +
CASE @inyGrouping
WHEN 1 THEN ’weekday’
WHEN 3 THEN ’month’
WHEN 2 THEN ’week’
WHEN 4 THEN ’quarter’
WHEN 5 THEN ’year’
END + ’,’ + RTRIM(@chrColHead) + ’)’
ELSE RTRIM(@chrColHead)
END + ’ from ’ +RTRIM(@chrSource) + ’) xyz order by col3’
--PRINT @chvExec
EXEC(@chvExec)
/* Check column count */
IF (SELECT COUNT(*) FROM #colnames) > 1023
BEGIN
DROP TABLE #colnames
RAISERROR 51004 ’Distinct column count exceeded max of 1023.’
RETURN -1
END
/* Verify colnames do not exceed max length */
IF (SELECT MAX(DATALENGTH(RTRIM(colname)) - 1) FROM #colnames) > 29
BEGIN
DROP TABLE #colnames
RAISERROR 51050 ’Column data length exceeded max of 30.’
RETURN -1
END
/* If all is OK,continue to add #rownames data */
SELECT @chvExec = ’insert #rownames select distinct ’ +
CASE @intRowType
WHEN 1 THEN ’convert(varchar(255), ’
ELSE ’’
END + RTRIM(@chrRowHead) +
CASE @intRowType
WHEN 1 THEN ’)’
ELSE ’’
END + ’ from ’ + @chrSource
--PRINT @chvExec
EXEC(@chvExec)
/*
Would be nice if you could use this value to define the crosstable
but this table must be created in a non-dynamic fashion.
*/
SELECT @intMaxRowHead=
(SELECT MAX(DATALENGTH(RTRIM(rowname))) FROM #rownames)
/* Create crosstable */
/* Define crosstable with rowhead field */
CREATE TABLE crosstable (rowhead varchar(255) NULL)
/* Alter crosstable by adding columns based on #colnames data */
DECLARE colname_cursor2 CURSOR FOR
SELECT colname FROM #colnames
OPEN colname_cursor2
FETCH colname_cursor2 INTO @chvCol
WHILE @@fetch_status >= 0
BEGIN
SELECT @chvColTemp = ’’
IF @chvCol LIKE ’%[^A-Z0-9]%’
BEGIN
SELECT @insR=1
WHILE @insR <= DATALENGTH(RTRIM(@chvCol))
BEGIN
SELECT @chvColTemp = RTRIM(@chvColTemp) +
CASE
WHEN SUBSTRING(@chvCol,@insR,1) LIKE ’[A-Z0-9_]’
THEN SUBSTRING(@chvCol,@insR,1)
ELSE ’’
END
SELECT @insR = @insR + 1
END
SELECT @chvCol = @chvColTemp
END
SELECT @chvExec = ’alter table ’ + user_name() + ’.crosstable add ’+
CASE
WHEN SUBSTRING(@chvCol,1,1) LIKE ’[^1234567890]’ THEN @chvCol
ELSE ’_’ + LTRIM(@chvCol)
END + ’ ’ + @chvColType + ’ null default(0)’
--PRINT @chvExec
EXEC(@chvExec)
FETCH colname_cursor2 INTO @chvCol
END
CLOSE colname_cursor2
DEALLOCATE colname_cursor2
/* Add #rowhead data to crosstable */
SELECT @chvExec=’insert ’ + USER_NAME() + ’.crosstable (rowhead) select rowname from #rownames’
--PRINT @chvExec
EXEC(@chvExec)
/*
Create cursor with @chvRowHead and @chvColHead groupings and @chvValue
aggregate
*/
SELECT @chvExec = ’declare colname_cursor3 cursor for select ’ +
CASE @intRowType
WHEN 1 THEN ’convert(varchar(255),’ + RTRIM(@chrRowHead) + ’)’
ELSE RTRIM(@chrRowHead)
END + ’,’ +
CASE
WHEN @intTemp = 3 THEN
CASE
WHEN @inyGrouping IN (1,3) THEN ’datename(’ +
CASE @inyGrouping
WHEN 1 THEN ’weekday’
WHEN 3 THEN ’month’
END + ’,’ + RTRIM(@chrColHead) + ’)’
ELSE CASE @inyGrouping
WHEN 2 THEN ’’’Week’
WHEN 4 THEN ’’’Quarter’
WHEN 5 THEN ’’’Year’
END + ’_’’ + ’+ ’datename(’ +
CASE @inyGrouping
WHEN 2 THEN ’week’
WHEN 4 THEN ’quarter’
WHEN 5 THEN ’year’
END + ’,’ + RTRIM(@chrColHead) + ’)’
END
ELSE CASE @intColType
WHEN 1 THEN ’convert(varchar(255),’ + RTRIM(@chrColHead) + ’)’
ELSE RTRIM(@chrColHead)
END
END + ’,total = convert(varchar(255),’ + RTRIM(@chvType) + ’(’ +
RTRIM(@chrValue) + ’)) from ’ + RTRIM(@chrSource) + ’ group by ’ +
RTRIM(@chrRowHead) + ’,’ +
CASE @intTemp
WHEN 3 THEN
CASE
WHEN @inyGrouping IN (1,3) THEN ’datename(’ +
CASE @inyGrouping
WHEN 1 THEN ’weekday’
WHEN 3 THEN ’month’
END + ’,’ + RTRIM(@chrColHead) + ’)’
ELSE CASE @inyGrouping
WHEN 2 THEN ’’’Week’
WHEN 4 THEN ’’’Quarter’
WHEN 5 THEN ’’’Year’
END + ’_’’ + ’ + ’datename(’ +
CASE @inyGrouping
WHEN 2 THEN ’week’
WHEN 4 THEN ’quarter’
WHEN 5 THEN ’year’
END + ’,’ + RTRIM(@chrColHead) + ’)’
END
ELSE RTRIM(@chrColHead)
END
--PRINT @chvExec
EXEC(@chvExec)
/* Iterate through cursor and update crosstable */
BEGIN TRAN
OPEN colname_cursor3
FETCH colname_cursor3 INTO @chvRow,@chvCol,@chvVal
WHILE @@fetch_status >= 0
BEGIN
SELECT @chvColTemp = ’’
IF @chvCol LIKE ’%[^A-Z0-9]%’
BEGIN
SELECT @insR=1
WHILE @insR <= DATALENGTH(RTRIM(@chvCol))
BEGIN
SELECT @chvColTemp = RTRIM(@chvColTemp) +
CASE
WHEN SUBSTRING(@chvCol,@insR,1) LIKE ’[A-Z0-9_]’
THEN SUBSTRING(@chvCol,@insR,1)
ELSE ’’
END
SELECT @insR = @insR + 1
END
SELECT @chvCol = @chvColTemp
END
SELECT @chvExec = ’update ’ + USER_NAME() + ’.crosstable set ’ +
CASE
WHEN SUBSTRING(@chvCol,1,1) LIKE ’[^1234567890]’ THEN @chvCol
ELSE ’_’ + LTRIM(@chvCol)
END + ’ = ’ +
CASE
WHEN @chvVal IS NULL THEN ’0’
ELSE RTRIM(@chvVal)
END + ’ where rowhead = ’’’
SELECT @chvRow =
CASE WHEN @chvRow IS NULL THEN ’NULL’
ELSE RTRIM(@chvRow)
END
SELECT @chvRowTemp = ’’
IF @chvRow LIKE ’%’’%’
BEGIN
SELECT @insR = 1
WHILE @insR <= DATALENGTH(RTRIM(@chvRow)) - 1
BEGIN
SELECT @chvRowTemp = RTRIM(@chvRowTemp) +
CASE
WHEN SUBSTRING(@chvRow,@insR,1) LIKE ’[^’’]’ THEN
SUBSTRING(@chvRow,@insR,1)
ELSE ’’’’’’
END
SELECT @insR = @insR + 1
END
SELECT @chvRow = @chvRowTemp
END
SELECT @chvExec = @chvExec + @chvRow + ’’’’
--PRINT @chvExec
EXEC(@chvExec)
FETCH colname_cursor3 INTO @chvRow,@chvCol,@chvVal
END
CLOSE colname_cursor3
DEALLOCATE colname_cursor3
COMMIT TRAN
/* Send back the data from crosstable */
SET NOCOUNT OFF
SELECT @chvExec = ’select * from ’ + USER_NAME() + ’.crosstable’
--PRINT @chvExec
EXEC(@chvExec)
/* Drop the tables */
DROP TABLE #colnames
DROP TABLE #rownames
DROP TABLE crosstable
RETURN
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
