CODEWITHSUNDEEP
azurekqlazure-monitoring
Val
Val

Reputation: 123

How to compare Kusto query against 2 table columns?

How do I check for a ProductLine whether 2 fields exactly match with 2 fields in dynTable? Condition: IF PName matches with Name AND IF Cat matches with Category in dynTable

So basically we need to iterate through the items of dynTable with information from a table called ProductLine.

| PName | Cat | Info
----------------------
| A     | X   | 123
| B     | Y   | 456
| C     | Z   | 789
----------------------

let dynTable = 
    print myDynamicValue = dynamic(
        [
        {
            "Name": "X",
            "Category": "Y"
        },
        {
            "Name": "A",
            "Category": "B"
        },
        {
            "Name": "A",
            "Category": B"
        }
        ]) 
    | mvexpand myDynamicValue 
    | evaluate bag_unpack(myDynamicValue);
dynTable

Upvotes: 0

Views: 4976

Answers (1)

Yoni L.
Yoni L.

Reputation: 25905

you could use the join operator to join on both columns: https://learn.microsoft.com/en-us/azure/data-explorer/kusto/query/joinoperator?pivots=azuredataexplorer

datatable(Name:string, Category:string)
[
    "X", "Y", 
    "A", "B", 
    "A", "B", 
]
| join (datatable(PName:string, Cat:string, Info:string)
[
    'A', 'X', 123,
    'B', 'Y', 456,
    'C', 'Z', 789,
]) on $left.Name == $right.PName and $left.Category == $right.Cat

Upvotes: 2

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