SQL syntax or database constrictions? - sql

Question

I have 2 tables that have each a column MNR. I want to join them with this column.
The following two SQL statements fail. The last one shows that my date format is working (with changed session format). DB is Oracle.
Can someone please tell me what I'm doing wrong ? And what do I call this join ?
// fails
select a.CREATEDATE, a.BELEGNRRECH, a.MNR, a.UTNR, a.KTXT, b.ANR
from INFOR.RELFBR as a, INFOR.RELXDB as b
where (a.SAINT = '90') and (a.MNR = b.MNR) and (b.SAINT = '10')
and (a.CREATEDATE >= '01.01.2014 00:00:00')
order by a.CREATEDATE
// fails as well
select a.CREATEDATE, a.BELEGNRRECH, a.MNR, a.UTNR, a.KTXT, b.ANR
from INFOR.RELFBR as a, INFOR.RELXDB as b
where (a.SAINT = '90') and (a.MNR = b.MNR) and (b.SAINT = '10')
order by a.CREATEDATE
// all fine
select CREATEDATE, MNR
from INFOR.RELFBR
where (CREATEDATE >= '01.01.2014 00:00:00')
order by CREATEDATE
Failing error is ORA-00933: SQL command not properly ended
After removing "order by ..." same error occurs.

Answer 1

Exclude AS from table aliasing - AS can be used with selection list but not in FROM clause
select a.CREATEDATE, a.BELEGNRRECH, a.MNR, a.UTNR, a.KTXT, b.ANR
from INFOR.RELFBR a, INFOR.RELXDB b
where (a.SAINT = '90') and (a.MNR = b.MNR) and (b.SAINT = '10')
and (a.CREATEDATE >= '01.01.2014 00:00:00')
order by a.CREATEDATE
Example:
SQL> select * from t_dummy t;
X
-----------------------
9.0000
SQL> select * from t_dummy as t;
select * from t_dummy as t
*
error in line 1:
ORA-00933: SQL command not properly ended
Documentation:
http://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_10002.htm#i2126863