CreateQuery bftest (children 3)
 Identifier bftest
 Columns definition (children 2)
  ExpressionList (children 3)
   ColumnDeclaration k (children 1)
    DataType Int64
   ColumnDeclaration y (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Int64
    Identifier x
   ColumnDeclaration x (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Int64
  ExpressionList (children 1)
   Index (children 2)
    Identifier x
    Function bloom_filter (children 1)
     ExpressionList
 Storage definition (children 2)
  Function MergeTree
  Identifier k
