CreateQuery A (children 3)
 Identifier A
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration ts (children 1)
    DataType DateTime
   ColumnDeclaration id (children 1)
    DataType String
   ColumnDeclaration id_b (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function toStartOfHour (children 1)
   ExpressionList (children 1)
    Identifier ts
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier ts
    Identifier id