Witam,
Mam do napisania procedurę w SQL która przyjmuję jako argumenty ścieżki do dwóch plików i porównuje ich strukturę czyli ilość kolumny wierszy itp są to pliki głównie XML a dokładniej raporty ETL. Nie mam pojęcia jak to ugryźć czy w samym SQL da się to zrobić czy trzeba skorzystać ze skryptu np w C#?
0
0
Kiedyś coś podobnego potrzebowałem i gdzieś na googlach znalazłem takie cudeńko. Nie pamiętam czy to działa czy nie ale możesz to sobie sam zweryfikować:
CREATE FUNCTION [dbo].[CompareXml]
(
@xml1 XML,
@xml2 XML
)
RETURNS INT
AS
BEGIN
DECLARE @ret INT
SELECT @ret = 0
-- -------------------------------------------------------------
-- If one of the arguments is NULL then we assume that they are
-- not equal.
-- -------------------------------------------------------------
IF @xml1 IS NULL OR @xml2 IS NULL
BEGIN
RETURN 1
END
-- -------------------------------------------------------------
-- Match the name of the elements
-- -------------------------------------------------------------
IF (SELECT @xml1.value('(local-name((/*)[1]))','VARCHAR(MAX)'))
<>
(SELECT @xml2.value('(local-name((/*)[1]))','VARCHAR(MAX)'))
BEGIN
RETURN 1
END
---------------------------------------------------------------
--Match the value of the elements
---------------------------------------------------------------
IF((@xml1.query('count(/*)').value('.','INT') = 1) AND (@xml2.query('count(/*)').value('.','INT') = 1))
BEGIN
DECLARE @elValue1 VARCHAR(MAX), @elValue2 VARCHAR(MAX)
SELECT
@elValue1 = @xml1.value('((/*)[1])','VARCHAR(MAX)'),
@elValue2 = @xml2.value('((/*)[1])','VARCHAR(MAX)')
IF @elValue1 <> @elValue2
BEGIN
RETURN 1
END
END
-- -------------------------------------------------------------
-- Match the number of attributes
-- -------------------------------------------------------------
DECLARE @attCnt1 INT, @attCnt2 INT
SELECT
@attCnt1 = @xml1.query('count(/*/@*)').value('.','INT'),
@attCnt2 = @xml2.query('count(/*/@*)').value('.','INT')
IF @attCnt1 <> @attCnt2 BEGIN
RETURN 1
END
-- -------------------------------------------------------------
-- Match the attributes of attributes
-- Here we need to run a loop over each attribute in the
-- first XML element and see if the same attribut exists
-- in the second element. If the attribute exists, we
-- need to check if the value is the same.
-- -------------------------------------------------------------
DECLARE @cnt INT, @cnt2 INT
DECLARE @attName VARCHAR(MAX)
DECLARE @attValue VARCHAR(MAX)
SELECT @cnt = 1
WHILE @cnt <= @attCnt1
BEGIN
SELECT @attName = NULL, @attValue = NULL
SELECT
@attName = @xml1.value(
'local-name((/*/@*[sql:variable("@cnt")])[1])',
'varchar(MAX)'),
@attValue = @xml1.value(
'(/*/@*[sql:variable("@cnt")])[1]',
'varchar(MAX)')
-- check if the attribute exists in the other XML document
IF @xml2.exist(
'(/*/@*[local-name()=sql:variable("@attName")])[1]'
) = 0
BEGIN
RETURN 1
END
IF @xml2.value(
'(/*/@*[local-name()=sql:variable("@attName")])[1]',
'varchar(MAX)')
<>
@attValue
BEGIN
RETURN 1
END
SELECT @cnt = @cnt + 1
END
-- -------------------------------------------------------------
-- Match the number of child elements
-- -------------------------------------------------------------
DECLARE @elCnt1 INT, @elCnt2 INT
SELECT
@elCnt1 = @xml1.query('count(/*/*)').value('.','INT'),
@elCnt2 = @xml2.query('count(/*/*)').value('.','INT')
IF @elCnt1 <> @elCnt2
BEGIN
RETURN 1
END
-- -------------------------------------------------------------
-- Start recursion for each child element
-- -------------------------------------------------------------
SELECT @cnt = 1
SELECT @cnt2 = 1
DECLARE @x1 XML, @x2 XML
DECLARE @noMatch INT
WHILE @cnt <= @elCnt1
BEGIN
SELECT @x1 = @xml1.query('/*/*[sql:variable("@cnt")]')
--RETURN CONVERT(VARCHAR(MAX),@x1)
WHILE @cnt2 <= @elCnt2
BEGIN
SELECT @x2 = @xml2.query('/*/*[sql:variable("@cnt2")]')
SELECT @noMatch = dbo.CompareXml( @x1, @x2 )
IF @noMatch = 0 BREAK
SELECT @cnt2 = @cnt2 + 1
END
SELECT @cnt2 = 1
IF @noMatch = 1
BEGIN
RETURN 1
END
SELECT @cnt = @cnt + 1
END
RETURN @ret
END
0
Próbuję rozkminić to co wysłałeś ale niestety chyba nie działa ma ktoś jeszcze jakieś pomysły?
0
Piszesz, że próbujesz "rozkminić" ale chyba nie działa ... co ci nie działa dokładnie?
0
po prostu zwraca zły wynik, np dla wywołania
EXEC @o= CompareXML '<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Dont forget me this weekend!</body>
</note>',
'<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Dont forget me this weekend!</body>
</note>'
Zwraca 0 a są one identyczne ogólnie zmieniam input lecz cały czas mam wynik 0.
0
No żebym gotowcami musiał rzucać bo się google używać nie umie ...
SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
GO
CREATE function [dbo].[udf_XML_Is_Equal]
(
@Data1 xml,
@Data2 xml
)
returns bit
as
begin
declare
@i bigint, @cnt1 bigint, @cnt2 bigint,
@Sub_Data1 xml, @Sub_Data2 xml,
@Name varchar(max), @Value1 nvarchar(max), @Value2 nvarchar(max)
if @Data1 is null or @Data2 is null
return 1
--=========================================================================================================
-- If more than one root - recurse for each element
--=========================================================================================================
select
@cnt1 = @Data1.query('count(/*)').value('.','int'),
@cnt2 = @Data1.query('count(/*)').value('.','int')
if @cnt1 <> @cnt2
return 0
if @cnt1 > 1
begin
select @i = 1
while @i <= @cnt1
begin
select
@Sub_Data1 = @Data1.query('/*[sql:variable("@i")]'),
@Sub_Data2 = @Data2.query('/*[sql:variable("@i")]')
if dbo.udf_XML_Is_Equal_New(@Sub_Data1, @Sub_Data2) = 0
return 0
select @i = @i + 1
end
return 1
end
--=========================================================================================================
-- Comparing root data
--=========================================================================================================
if @Data1.value('local-name(/*[1])','nvarchar(max)') <> @Data2.value('local-name(/*[1])','nvarchar(max)')
return 0
if @Data1.value('/*[1]', 'nvarchar(max)') <> @Data2.value('/*[1]', 'nvarchar(max)')
return 0
--=========================================================================================================
-- Comparing attributes
--=========================================================================================================
select
@cnt1 = @Data1.query('count(/*[1]/@*)').value('.','int'),
@cnt2 = @Data1.query('count(/*[1]/@*)').value('.','int')
if @cnt1 <> @cnt2
return 0
if exists (
select *
from
(
select
T.C.value('local-name(.)', 'nvarchar(max)') as Name,
T.C.value('.', 'nvarchar(max)') as Value
from @Data1.nodes('/*[1]/@*') as T(C)
) as D1
full outer join
(
select
T.C.value('local-name(.)', 'nvarchar(max)') as Name,
T.C.value('.', 'nvarchar(max)') as Value
from @Data2.nodes('/*[1]/@*') as T(C)
) as D2
on D1.Name = D2.Name
where
not
(
D1.Value is null and D2.Value is null or
D1.Value is not null and D2.Value is not null and D1.Value = D2.Value
)
)
return 0
--=========================================================================================================
-- Recursively running for each child
--=========================================================================================================
select
@cnt1 = @Data1.query('count(/*[1]/*)').value('.','int'),
@cnt2 = @Data2.query('count(/*[1]/*)').value('.','int')
if @cnt1 <> @cnt2
return 0
select @i = 1
while @i <= @cnt1
begin
select
@Sub_Data1 = @Data1.query('/*/*[sql:variable("@i")]'),
@Sub_Data2 = @Data2.query('/*/*[sql:variable("@i")]')
if dbo.udf_XML_Is_Equal(@Sub_Data1, @Sub_Data2) = 0
return 0
select @i = @i + 1
end
return 1
END
declare
@b bit;
EXEC @b = udf_XML_Is_Equal '<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Dont forget me this weekend!</body>
</note>',
'<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Dont forget me this weekend!</body>
</note>'
select @b
0
Super dzięki działa, mam jeszcze jedno pytanie do was
Mam procedurę która sprawdza czy plik istnieje i mam przypadek iż plik jest bardzo duży i jest w trakcie kopiowania wtedy gdy wywołuje procedurę jak sprawdzi status pliku? jest to plik w formacie xml.