Explain EXPLAIN (children 2)
 Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Identifier name
    TablesInSelectQuery (children 2)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier users
     TablesInSelectQueryElement (children 2)
      TableExpression (children 1)
       TableIdentifier users2
      TableJoin (children 1)
       ExpressionList (children 1)
        Identifier name
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier users2.name
      Literal \'Alice\'
