CreateQuery table1 (children 4)
 Identifier table1
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration id1 (children 1)
    DataType UInt64
   ColumnDeclaration id2 (children 1)
    DataType UInt8
 Storage definition (children 2)
  Function MergeTree
  Identifier id1
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 1)
    ExpressionList (children 2)
     Literal UInt64_1
     Literal UInt64_1
