Invalid column name: SQL Server 2008 R2 - sql

I have a stored procedure I use to extract binary data from SQL tables to create physical files. I have used it a couple of times on tables with the same structure restored from SQL backups, and it works OK.
Today I wanted to extract some binary data from a new table inside a restored backup. I opened the stored procedure I have been using and set about altering the code. Once I was happy with the changes I tried to execute the 'ALTER' statement. Unfortunetly, both of the column names I have used are 'invalid' despite existing on the the 'Document' table.
I have read a number of other threads regarding 'invalid column name' errors, but the majority of these seem to be typing errors. I've checked my column names numurous times (intelli sense even lets me put in 'Document.Document_ID' and 'Document.Document_Filename' but they still fail).
Any ideas where I am going wrong?
Source:
USE [Example Live]
GO
/****** Object: StoredProcedure [dbo].[FileExport] Script Date: 10/18/2012 11:42:14 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: Chris Murray
-- Create date: 18/10/2012
-- Description: Exports binary file data
-- =============================================
ALTER PROCEDURE [dbo].[FileExport]
-- Add the parameters for the stored procedure here
#OutputFilePath VARCHAR(500) = 'C:\Conv\Example\In\Afiles\'
AS
BEGIN
DECLARE #totrow int
DECLARE #currow int
DECLARE #result int
DECLARE #nsql nvarchar(4000)
DECLARE #sqlStatements table (ID int IDENTITY(1, 1), SqlStatement varchar(max))
INSERT
INTO #sqlStatements
SELECT 'BCP "SELECT Document_Data FROM [Example Live].[dbo].[Document] WHERE Document_ID = '''
+ CAST(Document_ID AS VARCHAR(500)) + '''" queryout ' + #OutputFilePath
+ CAST(Document_Filename AS VARCHAR(500)) + ' -S localhost\SQLEXPRESS2008 -T -f C:\Conv\Example\In\AFiles\Images.fmt'
FROM dbo.Photograph
SET #totrow = ##ROWCOUNT
SET #currow = 1
WHILE #totrow > 0 and #currow <= #totrow
BEGIN
SELECT #nsql = SqlStatement
FROM #sqlStatements
WHERE ID = #currow
EXEC #result = xp_cmdshell #nsql
SET #currow = #currow + 1
END
END

Thanks for the ideas everyone.
The problem was of my own making, and a rookie mistake. I neglected to point the SELECT statement at the correct table..

Related

ALLUSERSPROFILE OF the HOST SQL Server?

I need to write a SQL Server 2008R2 compatible script to create a share. The script will be executed from inside VB6 code but I am pretty sure that's a moot point here.
The following is PSEUDOCODE at the end
CREATE PROCEDURE [dbo].[create_Server_share]
#TheShare VARCHAR(50),
#TheDIR VARCHAR(250) = NULL
AS
BEGIN
IF (#TheDIR IS NULL) -- ALLUSERSPROFILE usually C:\Programdata
SET #TheDIR = ENVREFERENCE('%ALLUSERSPROFILE%')+ '\XYZ'
....
I already see that ENVREFERENCE is NOT available in SQL Server 2008 R2 (which is the oldest version I have to accomodate for our clients)
But I am not married to using ENVREFERENCE either - I just want the HOST MACHINE to give me its environment return for ALLUSERSPROFILE (obviously I should not grab this value from the executing code in the application because I will be getting the CLIENT's value instead of the desired HOST server's value; hence my desire to execute it from the T-SQL script)
So do any SQL guru's have some insight into this?
Thanks in advance.
Harry
Can't say this is completely bulletproof, but I past the first few dozen tests.
Thanks to Jeroen Mostert I realized I had my access to %ALLUSERSPROFILES% already on the Host server. the script then became something I could do...
-- create_Server_share.sql written by Harry Abramowski on 6/26/2018
-- we ARE NOT doing these steps in a command line prompt nor in VB6
-- because this share has to be made **ON** THE SERVER!
-- stored procs are a bitch!
go
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
IF EXISTS(SELECT 1
FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_NAME = 'create_Server_share'
AND SPECIFIC_SCHEMA = 'dbo')
BEGIN
DROP PROCEDURE create_Server_share
END
go
CREATE PROCEDURE [dbo].[create_Server_share]
#TheShare varchar(50),
#TheDrive char=null,
#TheDIR varchar(250)=null
AS
BEGIN
if (#TheDIR is null)
set #TheDIR = '%ALLUSERSPROFILE%\XYZ'
if (#TheDrive is null)
set #TheDrive = 'X'
DECLARE #answer as varchar(MAX)
declare #myString as varchar(1000)
DECLARE #i INT
-- JUST in case its not already set up, let's enable use of the reconfig in SQL
EXEC sp_configure 'show advanced options', 1; --might not be needed
RECONFIGURE;
EXEC sp_configure 'xp_cmdshell',1; -- wont hurt to assume it IS needed
RECONFIGURE;
-- net share XYZShare=C:\Programdata\XYZ /grant:everyone,FULL
a_redo:
set #myString = ('net share ' + #TheShare +'=' + #TheDIR + ' /grant:everyone,FULL')
CREATE TABLE #xyzout ([outputtext] varchar(MAX))
Insert into #xyzout (outputtext) EXECUTE xp_cmdshell #myString
-- what about The system cannot find the file specified.???
if exists(select #xyzout.outputtext from #xyzout where #xyzout.outputtext = 'The system cannot find the file specified.')
begin
set #myString = ('mkdir ' + #TheDIR)
EXECUTE xp_cmdshell #mystring
print ('The directory ' + #TheDIR + ' was created')
drop table #xyzout
goto a_redo -- yeah I know!
end
-- was there an error - was it just an "already exists" message? let's see
set #answer = (select top 1 outputtext from #xyzout)
print #answer
-- now update systemProps table so the client machines know there's a share and what drive they should map it to
if charindex('system error',lower(#answer))= 0
IF NOT EXISTS (SELECT a.* FROM syscolumns a, sysobjects b
WHERE a.name = 'XYZShare' AND
a.id = b.id AND
b.name = 'systemProps')
ALTER TABLE system ADD XYZShare NVARCHAR(1000) NULL ;
if charindex('system error',lower(#answer))= 0
begin
update systemProps set XYZShare = (#TheDrive + '=\\' +
CAST(serverproperty('MachineName') as varchar) + '\' + #TheShare );
select systemProps.XYZShare from systemProps;
return 0;
end
else
begin
select * from #xyzout where not(outputtext is null)
return 1;
end
EXEC sp_configure 'xp_cmdshell',0; --let's leave that off?
RECONFIGURE;
DROP TABLE #xyzout
---- if you need to delete the SHARE ITSELF you COULD use this: EXEC XP_CMDSHELL 'net share Xshared /delete'
--HOWEVER you can easily do either from the windows explorer in NETWORK view or My Computer view
END
GRANT EXECUTE ON dbo.create_Server_share TO PUBLIC
GO
Hope this is useful to someone. You guys always come through for me!

SQL Server object version control

We have got database deployment process which applies to production database. This process will change the definition of the store procedures/views/functions if they are not up to date with the current deployment. Problem is even though they are not changed deployment process will run ALTER step to make sure they are up to date. As we have got OLTP environment, during the deployment we get blocking on the stored procedures/functions.
What I want to implement is only alter the SP/view/function if the definition is changed.
We have already considered doing HashValue Compare of object definition (Does not work with large definition), date modified compare for object from system tables, SSDT, Redgate SQL Compare/Source Control.
Is there any other method which we can use to compare the definition during deployment and only apply the alter script if it is changed.
Thanks in advance for your input it this matter.
You can leverage Schema Compare functionality of SSDT. Also when you publish database project in SSDT, it will generate a script only containing the difference.
Please take a look at an introduction video at http://channel9.msdn.com/Events/Visual-Studio/Launch-2013/VS108
You can try using the following script.
basically it creates a Stored Procedure that gets as a parameter an object name (SP/view/function) and an alter command for it. The stored procedure checks if the 'Alter' argument will change the existing object, and only if it will it will run it.
/****** Object: StoredProcedure [dbo].[AlterDbObjectIfNecessary] Script Date: 05/14/2014 09:28:30 ******/
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[AlterDbObjectIfNecessary]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[AlterDbObjectIfNecessary]
GO
/****** Object: StoredProcedure [dbo].[AlterDbObjectIfNecessary] Script Date: 05/14/2014 09:28:30 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- create new user-toolset relation/ toolset User
CREATE PROCEDURE [dbo].[AlterDbObjectIfNecessary]
#alterCommand NVARCHAR(MAX) ,
#AlteredObjectname NVARCHAR(MAX)
AS
BEGIN
DECLARE #objId INT
DECLARE #objName NVARCHAR(max)
DECLARE #Def nvarchar(max)
--Getting the ID of the object you want to alter
SELECT
#objId = id, #objName = o.name
FROM sysobjects o
WHERE o.type IN ('P', 'TR', 'V', 'TF', 'FN', 'IF')
AND o.name = #AlteredObjectname
--Getting the later definittion
SELECT #Def = [definition]
FROM sys.sql_modules
WHERE object_id = #objId
--print #objName
--print #def
SET #def = REPLACE(#def, 'create PROC','alter PROC')
SET #def = REPLACE(#def, 'create procedure','alter procedure')
SET #def = REPLACE(#def, 'create function','alter function')
SET #def = REPLACE(#def, 'create view','alter view')
IF UPPER (#def) <> UPPER (#alterCommand)
BEGIN
BEGIN TRY
--PRINT #alterCommand
--Alter the object to new definition
EXEC sp_executesql #alterCommand
PRINT #objName + ' Was Modified'
END TRY
BEGIN CATCH
PRINT 'Error. Failed to modify ' + #objName + ' : ' + CONVERT(nvarchar(10), ERROR_NUMBER()) + ' ' + ERROR_MESSAGE()
END CATCH
END
ELSE
BEGIN
PRINT 'Modification was not required for ' +#objName
END
END
GO
You can using it in the following manner:
DECLARE #alterCommand NVARCHAR(MAX)
DECLARE #AlteredObjectname NVARCHAR(MAX)
SET #AlteredObjectname = 'MyObjectName' -- <Insert here the name of object you want to alter
SET #alterCommand = 'ALTER PROCEDURE [dbo].[MyObjectName]
-- The rest of the alter stattement
'
EXEC AlterDbObjectIfNecessary #AlteredObjectname, #alterCommand

How can I spot in what database is a stored procedure with name 'myStoredProcedure'?

There are bunch of databases to the SQL server I am connected.
How should I query the sysobjects in order to spot in what database a stored procedure with name 'myStoredProcedure' is located ?
The query should return the database name.
Thanks
I know you are not asking for this, but I'd really download RedGate's Sql Search add-in for SSMS and use that. It allows you to find any object (proc, table, view, column, etc) on any database easily.
And it's free!
I'd give this a try:
CREATE TABLE ##DatabaseList
(
DatabaseName varchar(50)
)
EXECUTE SP_MSForEachDB 'USE [?]; INSERT INTO ##DatabaseList SELECT DB_NAME() FROM [sys].[objects] WHERE name = "MyStoredProcedure" AND type_desc = "SQL_STORED_PROCEDURE"'
SELECT * FROM ##DatabaseList
DROP TABLE ##DatabaseList
That's using the undocumented/ unsupported system stored procedure SP_MSForEachDb and writing any hits to a global temp table, then outputting the contents to the Results window before dropping the table. If you just need to know which database (or databases - there may of course be more than one) has an appropriately named SP, this should do it. If you want to use the output elsewhere as a parameter, it may take a little more work.
By the way, I'm only learning this stuff myself over the last few months so if anyone can critique the above and suggest a better way to go at it I'm happy to receive feedback. Equally, I can answer any further questions posted here to the best of my ability.
Cheers
So out of curiosity I decided to try write this myself, especially since ADG mentioned his solution was using an unsupported, undocumented procedure. This could also be expanded to take a 2nd parameter so where it checks the type = P (stored Proc) you could probably change it to look for other things like views / tables etc.
My solution is a bit long but here goes:
CREATE PROCEDURE spFindProceduresInDatabases
(
#ProcedureName NVARCHAR(99)
)
AS
BEGIN
-- Get all the database names and put them into a table
DECLARE #Db TABLE (DatabaseName Varchar(99))
INSERT INTO #Db SELECT name FROM Sys.databases
-- Declare a table to hold our results
DECLARE #results TABLE (DatabaseName VARCHAR(99))
-- Make a Loop
-- Declare a variable to be incremented
DECLARE #count INT
SET #count = 0
-- Declare the end condition
DECLARE #endCount INT
SELECT #endCount = COUNT(*) FROM #Db
-- Loop through the databases
WHILE (#count < #endCount )
BEGIN
-- Get the database we are going to look into
DECLARE #dbWeAreChecking VARCHAR(99)
SELECT TOP 1 #dbWeAreChecking = DatabaseName FROM #Db
DELETE FROM #Db WHERE DatabaseName = #dbWeAreChecking
-- Create and execute our query
DECLARE #Query NVARCHAR(3000)
SET #Query = N'SELECT #outParam = COUNT(*) FROM '+#dbWeAreChecking+'.sys.sysobjects WHERE type = ''P'' and name = #ProcedureName'
Declare #outParam INT
print (#Query)
DECLARE #ParmDefinition NVARCHAR(500)
DECLARE #IntVariable INT
SET #ParmDefinition = N'#ProcedureName VARCHAR(99),#outParam INT OUTPUT'
SET #IntVariable = 35
EXECUTE sp_executesql
#Query ,
#ParmDefinition,
#ProcedureName,
#outParam = #outParam OUTPUT
-- If we have a result insert it into the results table
If (#outParam > 0)
BEGIN
INSERT INTO #results(DatabaseName) VALUES(#dbWeAreChecking)
END
-- Increment the counter
SET #count = (#count + 1)
END
-- SELECT ALL OF THE THINGS!!!
SELECT * FROM #results
END

How can I verify that a file exists in Windows with SQL?

I have a SQL Server running on my Windows Server and, at a specific column of a table, I have the path for a Zip file (which in turn has the source of the data stored in the database). Some of these are not valid (do not match the data in database). I need to make SQL Server verify that these Zip files exist and that they match the column that stores the path and name of the zip file. This way I will delete the wrong file-path column correspondences.
you can use the undocumented proc xp_fileexist will return 1 if it exists and 0 otherwise
SET NOCOUNT ON
DECLARE #iFileExists INT
EXEC master..xp_fileexist 'c:\bla.txt',
#iFileExists OUTPUT
select #iFileExists
You can use xp_fileexist however please note it is undocumented and unsupported.
You can use SQLCLR, however you didn't bother specifying what version of SQL Server you're using, so it may not be relevant - and in any case it is disabled by default, and security policies prevent its use in some places.
You can use a #temp table and xp_cmdshell, however xp_cmdshell is typically disabled for the same reasons as SQLCLR.
/* if you need to enable xp_cmdshell:
exec master..sp_configure 'show adv', 1;
reconfigure with override;
exec master..sp_configure 'xp_cmdshell', 1;
reconfigure with override;
exec master..sp_configure 'show adv', 0;
reconfigure with override;
*/
SET NOCOUNT ON;
DECLARE
#file VARCHAR(1000),
#path VARCHAR(255),
#cmd VARCHAR(2048);
SELECT
#file = 'foo.zip',
#path = 'C:\wherever\';
SELECT #cmd = 'dir /b "' + #path + #file + '"';
CREATE TABLE #x(a VARCHAR(1255));
INSERT #x EXEC master..xp_cmdshell #cmd;
IF EXISTS (SELECT 1 FROM #x WHERE a = #file)
PRINT 'file exists';
ELSE
PRINT 'file does not exist';
DROP TABLE #x;
EDIT based on new requirements. It shows a list of files either in the table or in the database, and indicates whether the file is in only one location or both. It assumes that path + file is <= 900 characters long (merely to be able to use an index on at least one side).
USE tempdb;
GO
CREATE TABLE dbo.files(f VARCHAR(1000));
INSERT dbo.files(f) SELECT 'zip_that_does_not_exist.zip'
UNION ALL SELECT 'c:\path\file_that_does_not_exist.zip'
UNION ALL SELECT 'c:\path\file_that_exists.zip'
UNION ALL SELECT 'zip_that_exists.zip';
DECLARE
#path VARCHAR(255),
#cmd VARCHAR(2048);
SELECT
#path = path_column,
#cmd = 'dir /b "' + path_column + '"'
FROM
dbo.table_that_holds_path;
CREATE TABLE #x(f VARCHAR(900) UNIQUE);
INSERT #x EXEC master..xp_cmdshell #cmd;
DELETE #x WHERE f IS NULL;
UPDATE #x SET f = LOWER(f);
WITH f AS
(
SELECT f = REPLACE(LOWER(f), LOWER(#path), '')
FROM dbo.files
)
SELECT
[file] = COALESCE(x.f, f.f),
[status] = CASE
WHEN x.f IS NULL THEN 'in database, not in folder'
WHEN f.f IS NULL THEN 'in folder, not in database'
ELSE 'in both' END
FROM
f FULL OUTER JOIN #x AS x
ON x.f = f.f;
DROP TABLE #x, dbo.files;

Generating XML file from SQL Server 2008

I am working on an application where I need to get the SQL response as XML into an XML file (and to store it in some physical location, say c:\xyz.xml).
I am able to generate the XML content using the provisions available in SQL Server as shown below.
SELECT * FROM #Table FOR XML AUTO, ELEMENTS
where: #Table is a table variable.
I want to know how I can store the query output to an XML file from SQL Server itself.
There's one more option - use sqlcmd tool.
Add :XML ON as a first line in your SQL file (let's call it input.sql)
A command like this will do the trick:
sqlcmd -S <your-server> -i input.sql -o output.xml
You need to use xp_cmdshell, and the bcp utility in the following way
EXEC xp_cmdshell 'bcp "SELECT * FROM #Table FOR XML AUTO, ELEMENTS" queryout "C:\table.xml" -c -T'
Hit me back in the comments if you've got any questions or want to know anything more about how this works.
You can't write to the file system from SQL Server itself. At least not that easily. There are three alternatives:
use xp_cmdshell. I would strongly advise against it. By default xp_cmdshell is disabled for security purposes, and to have it enabled it just for this operation opens a way to big security hole in your system.
use the FileSystemObject and the OLE Automation procedures sp_OACreate/sp_OAMethod. See Reading and Writing Files in SQL Server using T-SQL. This, while marginally better than the xp_cmdshell option, it doesn't give a much better security story. The only reason why is better than xp_cmdshell is that is by far less known by hackers. But the OLE Automation procedures option in SQL Server is also disabled by default and enabling this option exposes the very same security problems xp_cmdshell has.
use a CLR procedure. This would be my recommendation. Create an assembly with digital signature, use the assembly signature to allow, through Transact-SQL code signing, EXTERNAL ACCESS, then use the CLR procedure to write the XML into the file system. While this is significantly more complex than the simple xp_cmdshell or OLE Automation options, it is the most controlable and granular one from a security point of view and is the easiest to maintain and get right (is .Net code as opposed to shell scripts). Unfortunately, by default the clr option is also disabled in the server and has to be enabled.
If you press
ctrl + shift + f
you will have selected "Results To File." This can be found in the Query menu on the top bar of Sql Management Studio.
Or put something like this into your sql script
exec xp_cmdshell 'bcp "select * from suppliers" queryout "c:\suppliers.txt" -S server -T'
See this link, there is an issue about whether it is the app's c drive or the sql server's c drive. Have fun sorting that out.
You can create CLR function that create the file, build it into the sql server, and use it from a stored procedure
Another way( I haven't tested it ) - There is a tool bcp
bcp "Select * from dbo..table FOR XML RAW" queryout c:\temp\test.xml -Soc-db -Uuser -Ppassword
This example is from here
Simple SQL Write to File method
DECLARE #xml XML = '<MyXML></MyXMl>'
DECLARE #strXML varchar(max) = convert(varchar(max),#XML)
-- Add white space for readability
SELECT #strxml = replace(#strxml,'</',char(13) + char(10) + '</')
--- Add Declartives, namespaces and xls
Create Table dbo.BCP_OUT(contents varchar(max))
INSERT INTO dbo.bcp_out(contents)
SELECT Convert(varchar(max),#strXML )
EXEC xp_cmdshell N'BCP -S SERVER [database].dbo.bcp_out -T -c -o \\pathto\file.name'
If your xml output is relatively small (<4000 characters), then you can use this SP:
IF EXISTS (SELECT TOP 1 1 FROM sys.objects WHERE object_id = OBJECT_ID('dbo.USP_WRITE_UNICODE_STRING_TO_FILE') AND type = 'P')
BEGIN
DROP PROCEDURE dbo.USP_WRITE_UNICODE_STRING_TO_FILE
END
GO
-- =============================================
-- Description: Writes the specified Unicode string to the specified file.
-- Permissions: This stored procedure uses xp_cmdshell which is disabled by default. To enable it:
-- 1. In Management Studio connect to a component of SQL Server.
-- 2. In Object Explorer, right-click the server, and then click Facets.
-- 3. In the View Facets dialog box, expand the Facet list, and select the Surface Area Configuration.
-- 4. In the Facet properties area, select XPCmdShellEnabled property and set its value to True.
-- 5. Click OK.
-- Example: EXEC dbo.USP_WRITE_UNICODE_STRING_TO_FILE'<root> <a b="c" /> </root>', 'C:\Test.xml', 1;
-- =============================================
CREATE PROCEDURE dbo.USP_WRITE_UNICODE_STRING_TO_FILE
(
#Str NVARCHAR(4000),
#XmlFilePath NVARCHAR(256),
#Debug BIT = 0
)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Str1 NVARCHAR(MAX),
#Cmd NVARCHAR(4000),
#MaxLen int = 4000;
--see: http://technet.microsoft.com/en-us/library/bb490897.aspx
SET #Str1 = REPLACE(REPLACE(REPLACE(#Str, '>', '^>'), '<', '^<'), '"', '^"');
-- '>' Writes the command output to a file
SET #Str1 =N'ECHO ' + #Str1 + N'>"'+ #XmlFilePath + N'"';
IF #Debug = 1
BEGIN
DECLARE #Msg varchar(128) = 'The total lenght is ' + CAST(LEN(#Str1) AS VARCHAR(10)) + ' characters.'
PRINT #Msg;
PRINT #Str1;
END
IF (LEN(#Str1) > #MaxLen)
RAISERROR ('The input string is too long', 11, 0);
ELSE
SET #Cmd = CAST (#Str1 AS NVARCHAR(4000));
EXEC master..xp_cmdshell #Cmd, NO_OUTPUT;
END
GO
--Test 1
DECLARE #Str NVARCHAR(4000);
DECLARE #Xml xml = '<root> <a b="c" /> </root>';
SET #Str = CAST (#Xml AS NVARCHAR(4000));
EXEC dbo.USP_WRITE_UNICODE_STRING_TO_FILE #Str, 'C:\Test.xml', 1;
GO
--Test 2
DECLARE #Str NVARCHAR(4000);
SET #Str = REPLICATE('a', 4000);
EXEC dbo.USP_WRITE_UNICODE_STRING_TO_FILE #Str, 'C:\Test.xml', 1;
GO
If you don't work with Unicode, then you can create another SP: USP_WRITE_NON_UNICODE_STRING_TO_FILE, which will be very similar to the previous one with the following changes:
CREATE PROCEDURE dbo.USP_WRITE_NON_UNICODE_STRING_TO_FILE
(
#Str VARCHAR(8000),
#XmlFilePath NVARCHAR(256),
#Debug BIT = 0
)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Str1 VARCHAR(MAX),
#Cmd VARCHAR(8000),
#MaxLen int = 8000;
...
SET #Cmd = CAST (#Str1 AS VARCHAR(8000));
That SP allows the use of two times longer the input string (<8000 characters).
If your XML is longer than 8000 but less than 1MB you can use sqlcmd utility without :XML ON command. It greatly simplify the usage of the utility because you don't need a separate input_file with :XML ON command included. Here is an example:
DECLARE #Cmd NVARCHAR(4000);
SET #Cmd = N'sqlcmd -S ' + ##SERVERNAME + N' -d ' + DB_NAME() +
N' -Q "SET NOCOUNT ON; DECLARE #Xml xml = ''<root> <a >b</a> </root>''; SELECT CONVERT(NVARCHAR(MAX), #Xml);" -o "C:\Test.xml" -y 0';
PRINT #Cmd;
EXEC master..xp_cmdshell #Cmd, NO_OUTPUT;
You can also use an SP here:
CREATE PROCEDURE dbo.USP_SAMPLE_PROCEDURE
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Xml xml;
SET #Xml = (SELECT name, type_desc FROM sys.objects FOR XML PATH('object'), ROOT('sys.objects'));
SELECT CONVERT(NVARCHAR(MAX), #Xml)
END
GO
DECLARE #Cmd NVARCHAR(4000);
SET #Cmd = N'sqlcmd -S ' + ##SERVERNAME + N' -d ' + DB_NAME() +
N' -Q "EXEC dbo.USP_SAMPLE_PROCEDURE;" -o "C:\Test.xml" -y 0';
PRINT #Cmd;
EXEC master..xp_cmdshell #Cmd, NO_OUTPUT;
GO
If your XML is more than 1MB you should use :XML ON command in a separate script and specify it as -i input_file parameter.
I made this SP so I can easily extract data from db or temp table to XML file on file system. It supports where clause.
CREATE PROCEDURE dbo.ExportToXMLFile
#TableName varchar(1000)
, #Where varchar(2000)=''
, #TicketNumber varchar(500)
, #debug bit=0
as
/*
Date:2016-03-27
Author: BojNed
Purpose: Exports data from table to XML file on filesystem.
#TableName = name of table to export.
#Where = optitional, to set #Where Clause. DO NOT ENTER WHERE at beggining of the string
#TicketNumber = To save to folder on filesystem
#Debug = Optitional. To debug this SP.
Examples:
EXEC dbo.ExportToXMLFile '#tt','columnX=2','221',0
EXEC dbo.ExportToXMLFile '[Production].[Product]','','252',1
EXEC dbo.ExportToXMLFile '[dbo].[DatabaseLog]','ColumnZ=55','351',0
EXEC dbo.ExportToXMLFile '[dbo].[DatabaseLog]','','7865',1
*/
begin
if #debug=0
SET NOCOUNT ON
declare #SQL nvarchar(max)
declare #IsTempTable bit
declare #NewTableName varchar(1000)
declare #Xml as XML
if (isnull(#TicketNumber,''))=''
begin
RAISERROR('No ticket number defined',16,1,1)
RETURN
END
--check if table is tmp or variable
if (SELECT SUBSTRING(#TableName,1,1))='#' or (SELECT SUBSTRING(#TableName,1,1))='#'
BEGIN
if #debug=1
PRINT 'Source is TMP table'
set #NewTableName='TMPTBL_'+#TableName
END
ELSE
BEGIN
if #debug=1
PRINT 'Source is db table'
set #NewTableName=replace(#TableName,'.','_')
END
--RemoveSpecialChars
declare #KeepValues varchar(1000)
set #KeepValues = '%[^a-z^0-9^_]%'
WHILE PATINDEX(#KeepValues,#NewTableName)>0
set #NewTableName = STUFF(#NewTableName, PATINDEX(#KeepValues,#NewTableName),1,'')
if #debug=1
PRINT 'Node name for XML Header and filename: '+#NewTableName
if ISNULL(#Where,'')=''
BEGIN
set #SQL= 'SELECT * FROM '+ #TableName+' FOR XML PATH, ROOT ('''+#NewTableName+'''), ELEMENTS'
if #debug=1
PRINT 'NO Where condition'
END
ELSE
BEGIN
set #SQL= 'SELECT * FROM '+ #TableName+' WHERE '+#Where+ ' FOR XML PATH, ROOT ('''+#NewTableName+'''), ELEMENTS'
if #debug=1
PRINT 'With Where condition'
END
--Get XML to tbl
if ISNULL(OBJECT_ID ('tempdb..##TXML'),0)>0
DROP TABLE ##TXML
CREATE TABLE ##TXML (XMLText XML)
set #SQL = ' insert into ##TXML select ('+#SQL+')'
--parse query
declare #testsql nvarchar(max)
declare #result int
set #testsql = N'set parseonly on; ' + #sql
exec #result = sp_executesql #testsql
-- If it worked, execute it
if #result = 0
begin
if #debug=1
PRINT 'Query OK: '+ #SQL
exec sp_executesql #sql
end
else
BEGIN
DECLARE #msg varchar(2000)
set #msg ='Parsing Error on query: ' + #SQL
RAISERROR (#msg,16,1,1)
RETURN
END
DECLARE #Tbl TABLE (id int identity(1,1), Dir varchar(256))
--check if dir exsists
INSERT into #Tbl
EXEC master.dbo.xp_subdirs 'C:\DataCorrectionBackup\'
if (SELECT Count(*) from #Tbl WHERE Dir=#TicketNumber)=0
BEGIN
--create new dir
DECLARE #t varchar(500)
set #t ='C:\DataCorrectionBackup\'+#TicketNumber
EXEC master.sys.xp_create_subdir #t
END
declare #bcp varchar(500)
declare #Filename VARCHAR(255)
set #Filename =convert(varchar(100),GETDATE(),112)+'_'+replace(convert(varchar(100),GETDATE(),114),':','')+'_'+#NewTableName+'.xml'
set #bcp = 'bcp "SELECT XMLText from ##TXML" queryout C:\DataCorrectionBackup\'+#TicketNumber+'\'+#Filename+' -w -T -S'+ ##servername
--save file
if #debug=0
EXEC xp_cmdshell #bcp, NO_OUTPUT
ELSE
BEGIN
EXEC xp_cmdshell #bcp
PRINT #bcp
END
DROP table ##TXML
end
go