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-- Create XLS script DAL - 04/24/2003
--
-- Designed for Agent scheduling, turn on "Append output for step history"
--
-- Search for %%% to find adjustable constants and other options
--
-- Uses OLE for ADO and OLE DB to create the XLS file if it does not exist
-- Linked server requires the XLS to exist before creation
-- Uses OLE ADO to Create the XLS Worksheet for use as a table by T-SQL
-- Uses Linked Server to allow T-SQL access to XLS table
-- Uses T-SQL to populate te XLS worksheet, very fast
--
PRINT 'Begin CreateXLS script at '+RTRIM(CONVERT(varchar(24),GETDATE(),121))+' '
PRINT ''
GO
SET NOCOUNT ON
DECLARE @Conn int -- ADO Connection object to create XLS
, @hr int -- OLE return value
, @src varchar(255) -- OLE Error Source
, @desc varchar(255) -- OLE Error Description
, @Path varchar(255) -- Drive or UNC path for XLS
, @Connect varchar(255) -- OLE DB Connection string for Jet 4 Excel ISAM
, @WKS_Created bit -- Whether the XLS Worksheet exists
, @WKS_Name varchar(128) -- Name of the XLS Worksheet (table)
, @ServerName nvarchar(128) -- Linked Server name for XLS
, @DDL varchar(8000) -- Jet4 DDL for the XLS WKS table creation
, @SQL varchar(8000) -- INSERT INTO XLS T-SQL
, @Recs int -- Number of records added to XLS
, @Log bit -- Whether to log process detail
-- Init variables
SELECT @Recs = 0
-- %%% 1 = Verbose output detail, helps find problems, 0 = minimal output detail
, @Log = 1
-- %%% assign the UNC or path and name for the XLS file, requires Read/Write access
-- must be accessable from server via SQL Server service account
-- & SQL Server Agent service account, if scheduled
SET @Path = 'C:\TEMP\Test_'+CONVERT(varchar(10),GETDATE(),112) +'.xls'
-- assign the ADO connection string for the XLS creation
SET @Connect = 'Provider=Microsoft.Jet.OLEDB.4.0;Data Source='+@Path+';Extended Properties=Excel 8.0'
-- %%% assign the Linked Server name for the XLS population
SET @ServerName = 'EXCEL_TEST'
-- %%% Rename Table as required, this will also be the XLS Worksheet name
SET @WKS_Name = 'People'
-- %%% Table creation DDL, uses Jet4 syntax,
-- Text data type = varchar(255) when accessed from T-SQL
SET @DDL = 'CREATE TABLE '+@WKS_Name+' (SSN Text, Name Text, Phone Text)'
-- %%% T-SQL for table population, note the 4 part naming required by Jet4 OLE DB
-- INSERT INTO SELECT, INSERT INTO VALUES, and EXEC sp types are supported
-- Linked Server does not support SELECT INTO types
SET @SQL = 'INSERT INTO '+@ServerName+'...'+@WKS_Name+' (SSN, Name, Phone) '
SET @SQL = @SQL+'SELECT au_id AS SSN'
SET @SQL = @SQL+', LTRIM(RTRIM(ISNULL(au_fname,'''')+'' ''+ISNULL(au_lname,''''))) AS Name'
SET @SQL = @SQL+', phone AS Phone '
SET @SQL = @SQL+'FROM pubs.dbo.authors'
IF @Log = 1 PRINT 'Created OLE ADODB.Connection object'
-- Create the Conn object
EXEC @hr = sp_OACreate 'ADODB.Connection', @Conn OUT
IF @hr <> 0 -- have to use <> as OLE / ADO can return negative error numbers
BEGIN
-- Return OLE error
EXEC sp_OAGetErrorInfo @Conn, @src OUT, @desc OUT
SELECT Error=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END
IF @Log = 1 PRINT char(9)+'Assigned ConnectionString property'
-- Set a the Conn object's ConnectionString property
-- Work-around for error using a variable parameter on the Open method
EXEC @hr = sp_OASetProperty @Conn, 'ConnectionString', @Connect
IF @hr <> 0
BEGIN
-- Return OLE error
EXEC sp_OAGetErrorInfo @Conn, @src OUT, @desc OUT
SELECT Error=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END
IF @Log = 1 PRINT char(9)+'Open Connection to XLS, for file Create or Append'
-- Call the Open method to create the XLS if it does not exist, can't use parameters
EXEC @hr = sp_OAMethod @Conn, 'Open'
IF @hr <> 0
BEGIN
-- Return OLE error
EXEC sp_OAGetErrorInfo @Conn, @src OUT, @desc OUT
SELECT Error=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END
-- %%% This section could be repeated for multiple Worksheets (Tables)
IF @Log = 1 PRINT char(9)+'Execute DDL to create '''+@WKS_Name+''' worksheet'
-- Call the Execute method to Create the work sheet with the @WKS_Name caption,
-- which is also used as a Table reference in T-SQL
-- Neat way to define column data types in Excel worksheet
-- Sometimes converting to text is the only work-around for Excel's General
-- Cell formatting, even though the Cell contains Text, Excel tries to format
-- it in a "Smart" way, I have even had to use the single quote appended as the
-- 1st character in T-SQL to force Excel to leave it alone
EXEC @hr = sp_OAMethod @Conn, 'Execute', NULL, @DDL, NULL, 129 -- adCmdText + adExecuteNoRecords
-- 0x80040E14 for table exists in ADO
IF @hr = 0x80040E14
-- kludge, skip 0x80042732 for ADO Optional parameters (NULL) in SQL7
OR @hr = 0x80042732
BEGIN
-- Trap these OLE Errors
IF @hr = 0x80040E14
BEGIN
PRINT char(9)+''''+@WKS_Name+''' Worksheet exists for append'
SET @WKS_Created = 0
END
SET @hr = 0 -- ignore these errors
END
IF @hr <> 0
BEGIN
-- Return OLE error
EXEC sp_OAGetErrorInfo @Conn, @src OUT, @desc OUT
SELECT Error=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END
IF @Log = 1 PRINT 'Destroyed OLE ADODB.Connection object'
-- Destroy the Conn object, +++ important to not leak memory +++
EXEC @hr = sp_OADestroy @Conn
IF @hr <> 0
BEGIN
-- Return OLE error
EXEC sp_OAGetErrorInfo @Conn, @src OUT, @desc OUT
SELECT Error=convert(varbinary(4),@hr), Source=@src, Description=@desc
RETURN
END
-- Linked Server allows T-SQL to access the XLS worksheet (Table)
-- This must be performed after the ADO stuff as the XLS must exist
-- and contain the schema for the table, or worksheet
IF NOT EXISTS(SELECT srvname from master.dbo.sysservers where srvname = @ServerName)
BEGIN
IF @Log = 1 PRINT 'Created Linked Server '''+@ServerName+''' and Login'
EXEC sp_addlinkedserver @server = @ServerName
, @srvproduct = 'Microsoft Excel Workbook'
, @provider = 'Microsoft.Jet.OLEDB.4.0'
, @datasrc = @Path
, @provstr = 'Excel 8.0'
-- no login name or password are required to connect to the Jet4 ISAM linked server
EXEC sp_addlinkedsrvlogin @ServerName, 'false'
END
-- Have to EXEC the SQL, otherwise the SQL is evaluated
-- for the linked server before it exists
EXEC (@SQL)
PRINT char(9)+'Populated '''+@WKS_Name+''' table with '+CONVERT(varchar,@@ROWCOUNT)+' Rows'
-- %%% Optional you may leave the Linked Server for other XLS operations
-- Remember that the Linked Server will not create the XLS, so remove it
-- When you are done with it, especially if you delete or move the file
IF EXISTS(SELECT srvname from master.dbo.sysservers where srvname = @ServerName)
BEGIN
IF @Log = 1 PRINT 'Deleted Linked Server '''+@ServerName+''' and Login'
EXEC sp_dropserver @ServerName, 'droplogins'
END
GO
SET NOCOUNT OFF
PRINT ''
PRINT 'Finished CreateXLS script at '+RTRIM(CONVERT(varchar(24),GETDATE(),121))+' '
GO
