CreateQuery literal_alias_misclassification (children 3)
 Identifier literal_alias_misclassification
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration id (children 1)
    DataType Int64
   ColumnDeclaration a (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration b (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int64
 Storage definition (children 2)
  Function MergeTree
  Identifier id
