SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.grants
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier user_name
     Literal \'test_user_01074\'
   Set
 Identifier Pretty