Azure Graph: List all tags as name value columns

azure-graph-tag-list.kusto

// Problem: tags in Azure are an objects like this:
// {tag_name: tag_value, tag_name2: tag_value2}
//
// What we want is to list these as table with name,value columns.
// The way I found is to convert the tag objects into arrays by 
// simple text replace and then we can tag and value by index and 
// can project them as columns. :) 
Resources
| project tags
| extend tags = tostring(tags)
| extend tags = replace(",", "],[", tags)
| extend tags = replace("{", "[[", tags)
| extend tags = replace("}", "]]", tags)
| extend tags = replace(":", ",", tags)
| extend tags = todynamic(tags)
| mvexpand tags
| project name = tags[0], value = tags[1]
| where notnull(name)
| where name !hasprefix "hidden"
| summarize count() by tostring(name), tostring(value)
| order by name