Create powershell-examples.md

docs/features/command-line/powershell-examples.md

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+---
+title: PowerShell Examples
+---
+
+When you combine `dscmd.exe` with powershell you can do some really powerful things like looping through a series of values and outputting a series of files.
+
+# Example 1
+The following example loops through an array of characters and export rows where the 'Product'[Color] value starts with the specified letter. This shows how you can insert a variable from Powershell into your query and filename dynamically.
+
+```
+$cmd = "C:\Users\dgosbell\Downloads\DaxStudio_3_1_0_portable\dscmd.exe"
+$server = "localhost:50909"
+$database = "5389c85e-326d-4e8f-8e42-f2db2fcb98a4"
+
+foreach ($letter in @("B", "R"))
+{
+
+    $query = @"
+/* START QUERY BUILDER */
+EVALUATE
+SUMMARIZECOLUMNS(
+    'Product'[Category],
+    'Product'[Color],
+    'Product'[Model],
+    Reseller[Business Type],
+    Customer[Country-Region],
+    Customer[State-Province],
+    KEEPFILTERS( FILTER( ALL( 'Product'[Color] ), SEARCH( \`"$letter\`", 'Product'[Color], 1, 0 ) = 1 )),
+    \`"Total Sales\`", [Total Sales]
+)
+ORDER BY 
+    'Product'[Category] ASC,
+    'Product'[Color] ASC,
+    'Product'[Model] ASC,
+    Reseller[Business Type] ASC,
+    Customer[Country-Region] ASC,
+    Customer[State-Province] ASC
+/* END QUERY BUILDER */
+"@  
+
+    &$cmd csv c:\temp\test-$letter.csv -s $server -d $database -q $query
+
+}
+
+```