NoViableAltException([email protected][])

One 、 problem

Use from hive The lexical parser stripped from the source code parses sql Find out

select u.name, o.orderid from order o join user u on o.uid = u.uid;

A simple one sql Report errors ,NoViableAltException([email protected][]). Finally, I found that the problem was order and user name .

Two 、 solve

because order and user yes hive Reserved keywords for （ Keyword complete reference here

• Change the table name to something else such as orderr、userr
• Use inverted quotation marks ` modification

String sj = “select u.name,o.orderid from `user` u join `order` o on o.id=u.id;”;

The normal ：