Azure Stream Analytics query language get value by key from array of key value pairs -

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i trying extract specific value array property in stream analytics query language.

my data looks follows: 

"context": {     "custom": {         "dimensions": [{             "macaddress": "ma"         },         {             "ipaddress": "ipaddr"         }]     }

}

i trying obtain result has "macaddress", "ipaddress" column titles , "ma", "ipaddr" rows.

i achieving this query:

select     getrecordpropertyvalue(getarrayelement(mysource.context.custom.dimensions, 0), 'macaddress') macaddress,     getrecordpropertyvalue(getarrayelement(mysource.context.custom.dimensions, 1), 'ipaddress') ipaddress,

i trying use cross apply far no luck. below cross apply query:

select     flat.arrayvalue.macaddress macaddress,     flat.arrayvalue.ipaddress ipaddress   [ffapi-track-events] mysource   cross apply getarrayelements(mysource.context.custom.dimensions) flat

this 1 produces 2 rows instead of one: 

macaddress, ipaddress ma        ,           , ipaddr

so i'm missing precisely flattening when writing that.

i bypass hardcoding index 0 it's not guaranteed macaddress won't switch places "ipaddress"... need findelementinarray condition, or means join dimensions array.

is there such thing?

thank you.


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