SQL Select Query giving MISSING EXPRESSION

Question

I am running a query on ORACLE DB 11g and am having an issue:

select ORDER as "_id", * from orderlines;

I have this error:

ORA-00936: missing expression
00936. 00000 -  "missing expression"
*Cause:    
*Action:
Error at Line: 7 Column: 41

I tried it with and without the ; and still gives the error.

Thanks in advance!

Answer 1

As ORDER is a reserved word in many RDBMSs including Oracle, you should escape it with " :

SELECT t."ORDER" AS "_id"
     , t.* 
FROM "orderlines" t