CreateQuery t1 (children 3)
 Identifier t1
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration str (children 1)
    DataType String
   ColumnDeclaration dec (children 1)
    DataType Decimal64 (children 1)
     ExpressionList (children 1)
      Literal UInt64_8
 Storage definition (children 2)
  Function MergeTree
  Identifier str