{
    head:{
        type:"APACHE_DRILL_PHYSICAL",
        version:"1",
        generator:{
            type:"manual"
        }
    },
    graph:[
        {
            @id:1,
            pop:"mock-sub-scan",
            url: "http://apache.org",
            entries:[
                {records: 5, types: [
                  {name: "float4col", type: "FLOAT4", mode: "REQUIRED"},
                  {name: "float8col", type: "FLOAT8", mode: "REQUIRED"} ,
                  {name: "intcol", type: "INT", mode: "REQUIRED"} ,
                  {name: "bigintcol", type: "BIGINT", mode: "REQUIRED"}
             ]}
            ]
        },
        {
            @id:2,
            child: 1,
            pop:"project",
            exprs: [
                { ref: "float4col", expr:"float4col" },
                { ref: "float4_cast", expr:"cast(cast(float4col as bigint) as varchar(10))" },
                { ref: "intcol", expr:"intcol" },
                { ref: "int_float4_add", expr:"cast(intcol as bigint) + cast(float4col as bigint)" },
                { ref: "bigintcol", expr:"bigintcol" },
                { ref: "bigint2varchar2int", expr:"cast(cast(bigintcol as varchar(8)) as int)" },
                { ref: "add_cast", expr:"cast('100' as int) + cast(cast(200 as varchar(8)) as int)"}
            ]
        },
        {
            @id: 3,
            child: 2,
            pop: "screen"
        }
    ]
}