Add Export-SQLTableToCSV.ps1 script

Author: ktaranov

PowerShell/Export-SQLTableToCSV.ps1

@@ -0,0 +1,129 @@
+#requires -version 4
+#requires -modules PSLogging
+<#
+.SYNOPSIS
+ Export in parallel sql server tables into csv files using bcp utility
+.DESCRIPTION
+ Export in parallel sql server tables into csv files using bcp utility
+ bcp docs: https://docs.microsoft.com/en-us/sql/tools/bcp-utility
+.PARAMETER ServerName <string>
+ Specifies SQL Server
+.PARAMETER DatabaseName <string>
+ Specifies database name
+.OUTPUTS Log File
+ The script log file stored in C:\Windows\Temp\<name>.log
+.NOTES
+ Version: 
+ Author: Konstantin Taranov k@taranov.pro
+ Author Modified: Alexander Titenko aleks.titenko@gmail.com
+ Creation Date: 2017-09-26
+ Last modified: 2017-09-29
+ Purpose/Change: Add PSLogging module
+.EXAMPLE
+ Export-SQLTableToCSV -CSVPath D:\12\ -ServerName NL-04 -DatabaseName NIIGAZ -MinRowCount 1 -MaxRowCount 3;
+#>
+
+#---------------------------------------------------------[Initialisations]--------------------------------------------------------
+
+#Set Error Action to Silently Continue
+$ErrorActionPreference = 'SilentlyContinue'
+
+#Import Modules & Snap-ins
+Import-Module PSLogging
+
+#----------------------------------------------------------[Declarations]----------------------------------------------------------
+
+#Script Version
+$sScriptVersion = '1.1'
+
+#Log File Info
+$sLogPath = 'D:\1\'
+$sLogName = 'Export-SQLTableToCSV.log'
+$sLogFile = Join-Path -Path $sLogPath -ChildPath $sLogName
+
+#-----------------------------------------------------------[Functions]------------------------------------------------------------
+
+Function Export-SQLTableToCSV {
+ Param (
+ [Parameter(Mandatory=$true)]
+ [string]$CSVPath,
+ [Parameter(Mandatory=$false)]
+ [string]$ServerName,
+ [Parameter(Mandatory=$false)]
+ [string]$DatabaseName,
+ [Parameter(Mandatory=$false)]
+ [string]$CodePage = '-C65001',
+ [Parameter(Mandatory=$false)]
+ [string]$MinRowCount,
+ [Parameter(Mandatory=$false)]
+ [string]$MaxRowCount
+
+)
+ Begin {
+ Write-LogInfo -LogPath $sLogFile -Message "Srart export SQL Tables from $DatabaseName in $CSVPath with bcp utility"
+ if(-not(Test-Path $CSVPath)){Write-Host "Path $CSVPath doesn't exist!" -foreground:red;
+ Write-LogInfo -LogPath $sLogFile -Message "Path $CSVPath doesn't exist!"
+ break;}
+
+ }
+ Process {
+ Try {
+
+ $wd = $CSVPath;
+ $ProcessName = "Bulk Insert txt files";
+ 
+ $TableDependecy = Invoke-Sqlcmd -ServerInstance $ServerName -Database $DatabaseName -Verbose -Query "
+ SELECT QUOTENAME(SCHEMA_NAME(t.schema_id)) AS SchemaName
+ , QUOTENAME(t.name) AS TableName
+ , SUM(ps.row_count) AS TableRowCount
+ FROM sys.tables t
+ INNER JOIN sys.dm_db_partition_stats ps
+ ON ps.object_id = t.object_id
+ WHERE index_id < 2
+ GROUP BY t.name
+ , t.schema_id
+ HAVING SUM(ps.row_count) >= $MinRowCount AND SUM(ps.row_count) <= $MaxRowCount
+ ORDER BY SUM(ps.row_count) ASC
+ OPTION (RECOMPILE);
+ ";
+
+ $bcpStatement = 'bcp "SELECT * FROM ['+ $ServerName + '].[' + $DatabaseName +'].__SCHEMANAME__.__TABLENAME__" queryout "' + $wd + '__SCHEMANAME__.__TABLENAME__.txt" -T -S ' + $ServerName +' -c ' + $CodePage + ' -t"|" -r"\n"';
+
+ $ScriptBlock = {
+ param($bcpRunStatement)
+ Invoke-Expression $bcpRunStatement
+ };
+ 
+ 
+ $TD = $TableDependecy; # | Where TableLevel -eq $level;
+ Foreach($t in $TD){
+ $bcpRunStatement = $bcpStatement.Replace("__SCHEMANAME__", $t[0]).Replace("__TABLENAME__", $t[1]);
+ Write-Host $bcpRunStatement
+ Start-Job -ScriptBlock $ScriptBlock -ArgumentList @($bcpRunStatement);
+
+ while(@(Get-Job -State Running).Count -gt 6){
+ Get-Job | Wait-Job -Any | Out-Null
+ }
+ }
+ }
+ Catch {
+ Write-LogError -LogPath $sLogFile -Message $_.Exception -ExitGracefully
+ Break
+ }
+ }
+ End {
+ If ($?) {
+ Write-LogInfo -LogPath $sLogFile -Message 'Completed Successfully.'
+ Write-LogInfo -LogPath $sLogFile -Message ' '
+ }
+ }
+}
+
+#-----------------------------------------------------------[Execution]------------------------------------------------------------
+
+Start-Log -LogPath $sLogPath -LogName $sLogName -ScriptVersion $sScriptVersion
+
+Export-SQLTableToCSV -CSVPath D:\1\ -ServerName NL-04 -DatabaseName NIIGAZ -MinRowCount 1 -MaxRowCount 3;
+
+Stop-Log -LogPath $sLogFile
+