Update tag example to be case insensitive

Author: DCtheGeek

articles/governance/resource-graph/samples/advanced.md

@@ -1,7 +1,7 @@
 ---
 title: Advanced query samples
 description: Use Azure Resource Graph to run some advanced queries, including working with columns, listing tags used, and matching resources with regular expressions.
-ms.date: 11/21/2019
+ms.date: 12/02/2019
 ms.topic: sample
 ---
 # Advanced Resource Graph query samples
@@ -396,15 +396,17 @@ Search-AzGraph -Query "Resources | where type =~ 'microsoft.compute/virtualmachi
 ## <a name="join-findstoragetag" />Find storage accounts with a specific tag on the resource group
 
 The following query uses an **inner** `join` to connect storage accounts with resource groups that
-have a specified tag name and tag value.
+have a specified case insensitive tag name and tag value.
 
 ```kusto
 Resources
 | where type =~ 'microsoft.storage/storageaccounts'
 | join kind=inner (
     ResourceContainers
     | where type =~ 'microsoft.resources/subscriptions/resourcegroups'
-    | where tags['key1'] == 'value1'
+    | mvexpand bagexpansion=array tags
+    | where isnotempty(tags)
+    | where tags[0] =~ 'key1' and tags[1] =~ 'value1'
     | project subscriptionId, resourceGroup)
 on subscriptionId, resourceGroup
 | project-away subscriptionId1, resourceGroup1
@@ -413,22 +415,22 @@ on subscriptionId, resourceGroup
 # [Azure CLI](#tab/azure-cli)
 
 ```azurecli-interactive
-az graph query -q "Resources | where type =~ 'microsoft.storage/storageaccounts' | join kind=inner ( ResourceContainers | where type =~ 'microsoft.resources/subscriptions/resourcegroups' | where tags['key1'] == 'value1' | project subscriptionId, resourceGroup) on subscriptionId, resourceGroup | project-away subscriptionId1, resourceGroup1"
+az graph query -q "Resources | where type =~ 'microsoft.storage/storageaccounts' | join kind=inner ( ResourceContainers | where type =~ 'microsoft.resources/subscriptions/resourcegroups' | mvexpand bagexpansion=array tags | where isnotempty(tags) | where tags[0] =~ 'key1' and tags[1] =~ 'value1' | project subscriptionId, resourceGroup) on subscriptionId, resourceGroup | project-away subscriptionId1, resourceGroup1"
 ```
 
 # [Azure PowerShell](#tab/azure-powershell)
 
 ```azurepowershell-interactive
-Search-AzGraph -Query "Resources | where type =~ 'microsoft.storage/storageaccounts' | join kind=inner ( ResourceContainers | where type =~ 'microsoft.resources/subscriptions/resourcegroups' | where tags['key1'] == 'value1' | project subscriptionId, resourceGroup) on subscriptionId, resourceGroup | project-away subscriptionId1, resourceGroup1"
+Search-AzGraph -Query "Resources | where type =~ 'microsoft.storage/storageaccounts' | join kind=inner ( ResourceContainers | where type =~ 'microsoft.resources/subscriptions/resourcegroups' | mvexpand bagexpansion=array tags | where isnotempty(tags) | where tags[0] =~ 'key1' and tags[1] =~ 'value1' | project subscriptionId, resourceGroup) on subscriptionId, resourceGroup | project-away subscriptionId1, resourceGroup1"
 ```
 
 # [Portal](#tab/azure-portal)
 
 ![Resource Graph explorer icon](../media/resource-graph-small.png) Try this query in Azure Resource Graph Explorer:
 
-- Azure portal: <a href="https://portal.azure.com/?feature.customportal=false#blade/HubsExtension/ArgQueryBlade/query/Resources%20%7C%20where%20type%20%3D~%20'microsoft.storage%2Fstorageaccounts'%20%7C%20join%20kind%3Dinner%20(%20ResourceContainers%20%7C%20where%20type%20%3D~%20'microsoft.resources%2Fsubscriptions%2Fresourcegroups'%20%7C%20where%20tags%5B'key1'%5D%20%3D%3D%20'value1'%20%7C%20project%20subscriptionId%2C%20resourceGroup)%20on%20subscriptionId%2C%20resourceGroup%20%7C%20project-away%20subscriptionId1%2C%20resourceGroup1" target="_blank">portal.azure.com</a> ![Open link in new window icon](../../media/new-window.png)
-- Azure Government portal: <a href="https://portal.azure.us/?feature.customportal=false#blade/HubsExtension/ArgQueryBlade/query/Resources%20%7C%20where%20type%20%3D~%20'microsoft.storage%2Fstorageaccounts'%20%7C%20join%20kind%3Dinner%20(%20ResourceContainers%20%7C%20where%20type%20%3D~%20'microsoft.resources%2Fsubscriptions%2Fresourcegroups'%20%7C%20where%20tags%5B'key1'%5D%20%3D%3D%20'value1'%20%7C%20project%20subscriptionId%2C%20resourceGroup)%20on%20subscriptionId%2C%20resourceGroup%20%7C%20project-away%20subscriptionId1%2C%20resourceGroup1" target="_blank">portal.azure.us</a> ![Open link in new window icon](../../media/new-window.png)
-- Azure China portal: <a href="https://portal.azure.cn/?feature.customportal=false#blade/HubsExtension/ArgQueryBlade/query/Resources%20%7C%20where%20type%20%3D~%20'microsoft.storage%2Fstorageaccounts'%20%7C%20join%20kind%3Dinner%20(%20ResourceContainers%20%7C%20where%20type%20%3D~%20'microsoft.resources%2Fsubscriptions%2Fresourcegroups'%20%7C%20where%20tags%5B'key1'%5D%20%3D%3D%20'value1'%20%7C%20project%20subscriptionId%2C%20resourceGroup)%20on%20subscriptionId%2C%20resourceGroup%20%7C%20project-away%20subscriptionId1%2C%20resourceGroup1" target="_blank">portal.azure.cn</a> ![Open link in new window icon](../../media/new-window.png)
+- Azure portal: <a href="https://portal.azure.com/?feature.customportal=false#blade/HubsExtension/ArgQueryBlade/query/Resources%20%7C%20where%20type%20%3D~%20%27microsoft.storage%2Fstorageaccounts%27%20%7C%20join%20kind%3Dinner%20%28%20ResourceContainers%20%7C%20where%20type%20%3D~%20%27microsoft.resources%2Fsubscriptions%2Fresourcegroups%27%20%7C%20mvexpand%20bagexpansion%3Darray%20tags%20%7C%20where%20isnotempty%28tags%29%20%7C%20where%20tags%5B0%5D%20%3D~%20%27key1%27%20and%20tags%5B1%5D%20%3D~%20%27value1%27%20%7C%20project%20subscriptionId%2C%20resourceGroup%29%20on%20subscriptionId%2C%20resourceGroup%20%7C%20project-away%20subscriptionId1%2C%20resourceGroup1" target="_blank">portal.azure.com</a> ![Open link in new window icon](../../media/new-window.png)
+- Azure Government portal: <a href="https://portal.azure.us/?feature.customportal=false#blade/HubsExtension/ArgQueryBlade/query/Resources%20%7C%20where%20type%20%3D~%20%27microsoft.storage%2Fstorageaccounts%27%20%7C%20join%20kind%3Dinner%20%28%20ResourceContainers%20%7C%20where%20type%20%3D~%20%27microsoft.resources%2Fsubscriptions%2Fresourcegroups%27%20%7C%20mvexpand%20bagexpansion%3Darray%20tags%20%7C%20where%20isnotempty%28tags%29%20%7C%20where%20tags%5B0%5D%20%3D~%20%27key1%27%20and%20tags%5B1%5D%20%3D~%20%27value1%27%20%7C%20project%20subscriptionId%2C%20resourceGroup%29%20on%20subscriptionId%2C%20resourceGroup%20%7C%20project-away%20subscriptionId1%2C%20resourceGroup1" target="_blank">portal.azure.us</a> ![Open link in new window icon](../../media/new-window.png)
+- Azure China portal: <a href="https://portal.azure.cn/?feature.customportal=false#blade/HubsExtension/ArgQueryBlade/query/Resources%20%7C%20where%20type%20%3D~%20%27microsoft.storage%2Fstorageaccounts%27%20%7C%20join%20kind%3Dinner%20%28%20ResourceContainers%20%7C%20where%20type%20%3D~%20%27microsoft.resources%2Fsubscriptions%2Fresourcegroups%27%20%7C%20mvexpand%20bagexpansion%3Darray%20tags%20%7C%20where%20isnotempty%28tags%29%20%7C%20where%20tags%5B0%5D%20%3D~%20%27key1%27%20and%20tags%5B1%5D%20%3D~%20%27value1%27%20%7C%20project%20subscriptionId%2C%20resourceGroup%29%20on%20subscriptionId%2C%20resourceGroup%20%7C%20project-away%20subscriptionId1%2C%20resourceGroup1" target="_blank">portal.azure.cn</a> ![Open link in new window icon](../../media/new-window.png)
 
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