Tag Archives: DBAStackExchange

Use Jupyter Notebooks to Help People on StackOverFlow

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I am sat in the PowerShell Saturday in Hamburg. You can see me on the right of this picture writing my previous blog post!

I was talking with my friend Mathias Jessen @IISResetMe on Twitter about notebooks and he said that another great use case was to use them on Stack OverFlow

Now Mathias is an active answerer on Stack OverFlow

and he puts a lot of effort into writing his answers, formatting them, including code and results. Basically exactly the same as a Notebook. However, with a Notebook, you can enable people to run the code as well on their own machines.

Mathias says he will use notebooks to help people when he answers their PowerShell questions on Stack OverFlow. If you are a Stack OverFlow Answerer then you can too.

SQL Server 2014 CTP on Azure. Powershell won’t create XTP tables

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Having a couple of hours to play I created a SQL 2014 box on Azure with Windows Server 2012 R1 and followed This Post on SQLServerCentral  to create a File Group and table with T-SQL. Everything went well. Don’t try and provision an extra small box with that image though as it is so slow as to be unusable!!

I then decided to take a look at doing it with Powershell and I cannot create the table. I think it is to do with my Index creation. Can anyone see my mistake as I am going round in circles now. I have posted to DBAStackExchange so answer there

    -- Create new database
CREATE DATABASE TestDatabase
GO
--Add MEMORY_OPTIMIZED_DATA filegroup to the database.
ALTER DATABASE TestDatabase
ADD FILEGROUP XTPFileGroup CONTAINS MEMORY_OPTIMIZED_DATA
-- Add a new file to the previous created file group
ALTER DATABASE TestDatabase ADD FILE
(
NAME = N'HekatonFile1',
FILENAME = N'C:\Program Files\Microsoft SQL
Server\MSSQL11.MSSQLSERVER\MSSQL\DATA\HekatonFile1')
TO FILEGROUP [HekatonFileGroup]
GO
-- Let's create a new Memory Optimized Table
CREATE TABLE TestTable
(
 Col1 INT NOT NULL,
Col2 VARCHAR(100) NOT NULL,
 Col3 VARCHAR(100) NOT NULL
CONSTRAINT chk_PrimaryKey PRIMARY KEY NONCLUSTERED HASH (Col1) WITH (BUCKET_COUNT = 1024)
) WITH (MEMORY_OPTIMIZED = ON)
GO

And Here is my Powershell

# To Load SQL Server Management Objects into PowerShell
[System.Reflection.Assembly]::LoadWithPartialName(‘Microsoft.SqlServer.SMO’)  | out-null
[System.Reflection.Assembly]::LoadWithPartialName(‘Microsoft.SqlServer.SMOExtended’)  | out-null
$server= new-Object Microsoft.SqlServer.Management.Smo.Server("(local)")
$dbname = "HekatonTest"
$db = New-Object Microsoft.SqlServer.Management.Smo.Database($server, $dbname)
# Add FileGroups
$FG1Name = "PRIMARY"
$Normalfg = new-object ('Microsoft.SqlServer.Management.Smo.FileGroup') ($db, $FG1Name)
$db.FileGroups.Add($Normalfg)
$FG2Name = "MemOpt"
$MemOptFG = new-object ('Microsoft.SqlServer.Management.Smo.FileGroup') ($db, $FG2Name)
$MemOptFG.FileGroupType = "MemoryOptimizedDataFileGroup"
$db.FileGroups.Add($MemOptFG)
#Create datafiles
$normallogname = "HekatonTest_Data"
$dbdfnormal = new-object ('Microsoft.SqlServer.Management.Smo.DataFile') ($Normalfg, $normallogname)
$dbnormalfile= $server.Information.MasterDBPath + '\' + $normallogname + '.mdf'
$normalfg.Files.Add($dbdfnormal)
$dbdfnormal.FileName = $dbnormalfile
$dbdfnormal.Size = [double](5.0 * 1024.0)
$dbdfnormal.GrowthType = 'Percent'
$dbdfnormal.Growth = 25.0
$dbdfnormal.IsPrimaryFile = 'True'
$MemOptFilename = "MemOpt_Data"
$MemOptDataFile = new-object ('Microsoft.SqlServer.Management.Smo.DataFile') ($MemOptFG, $MemOptFilename)
$MemOptDataFilePath= $server.Information.MasterDBPath + '\' + $MemOptFilename + '.ndf'
$MemOptFG.Files.Add($MemOptDataFile)
$MemOptDataFile.FileName = $MemOptDataFilePath

#Create Database
$db.Create() 
#Create Table
$dbname = "HekatonTest"
$db = $server.databases[$dbname]
$tb = new-object Microsoft.SqlServer.Management.Smo.Table($db, "MemOptTable")
#Add Columns
$col1 = new-object Microsoft.SqlServer.Management.Smo.Column($tb,"Col1", [Microsoft.SqlServer.Management.Smo.DataType]::Int)
$col2 = new-object Microsoft.SqlServer.Management.Smo.Column($tb, "Col2", [Microsoft.SqlServer.Management.Smo.DataType]::varchar(100))
$col3 = new-object Microsoft.SqlServer.Management.Smo.Column($tb, "Col3", [Microsoft.SqlServer.Management.Smo.DataType]::varchar(100))
$tb.Columns.Add($col1)
$tb.Columns.Add($col2)
$tb.Columns.Add($col3)
$C1Name =$col1.Name
#Create Index
$IX = New-Object Microsoft.SqlServer.Management.Smo.Index ($Tb, "PK_PrimaryKeyName")   
$IX_col = New-Object Microsoft.SqlServer.Management.Smo.IndexedColumn ($IX,$C1Name)
$IX.IndexedColumns.Add($IX_col)
$IX.IndexKeyType = "DriPrimaryKey"
$IX.IndexType = "HashIndex"
$IX.BucketCount = "1024"
$IX.FileGroup = "PRIMARY"
$IX.IsMemoryOptimized = $true
$Tb.Indexes.Add($IX)
$tb.FileGroup = "MemOpt"
$tb.Durability = "SchemaAndData"
$tb.IsMemoryOptimized = $true
$tb.Create()

I can create the filegroups and the database with PS and use SSMS to create Memory Optimised Tables (XTP) and if I take out the index creation then the table creates but isnt XTP obviously.

All you get is the frustrating Create() failed error which doesn’t help me to find the problem.

I know I can take the T-SQL and put it into Invoke-SQLCMD but I figured you ought to be able to do it with Powershell.

Can anyone point me in the right direction? For interest only, maybe it’s not available in the CTP. Answer over here