exec/java-exec/src/test/resources/union/test1.json

{
    head:{
        type:"APACHE_DRILL_PHYSICAL",
        version:"1",
        generator:{
            type:"manual"
        }
    },
    graph:[
        {
            @id:1,
            pop:"mock-sub-scan",
            url: "http://apache.org",
            entries:[
                {records: 100, types: [
                  {name: "blue", type: "INT", mode: "REQUIRED"},
                  {name: "red", type: "BIGINT", mode: "REQUIRED"},
                  {name: "green", type: "INT", mode: "REQUIRED"}
                ]}
            ]
        },
        {
            @id:2,
            pop:"mock-sub-scan",
            url: "http://apache.org",
            entries:[
                {records: 100, types: [
                  {name: "blue", type: "INT", mode: "REQUIRED"},
                  {name: "red", type: "BIGINT", mode: "REQUIRED"},
                  {name: "green", type: "INT", mode: "REQUIRED"}
                ]}
            ]
        },
        {
            @id:3,
            child: 2,
            pop:"filter",
            expr: "alternate()"
        },
        {
            @id:4,
            children: [1,3],
            pop:"union-all"
        },
        {
          @id:5,
          child:4,
          pop: "selection-vector-remover"

        },
        {
            @id: 6,
            child: 5,
            pop: "screen"
        }
    ]
}