CreateQuery probes (children 4)
 Identifier probes
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType Int32
   ColumnDeclaration ts (children 1)
    DataType Float64
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier key
    Identifier ts
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Identifier key.number
     Identifier ts.number
    TablesInSelectQuery (children 2)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (alias key) (children 1)
        ExpressionList (children 2)
         Literal UInt64_1
         Literal UInt64_2
     TablesInSelectQueryElement (children 2)
      TableExpression (children 1)
       Function numbers (alias ts) (children 1)
        ExpressionList (children 1)
         Literal UInt64_10
      TableJoin
    Set
