I'm trying to execute this query in Oracle SQL Developer:
SELECT G.Guest_ID, G.First_Name, G.Last_Name
FROM Guest AS G
JOIN Stay AS S ON G.Guest_ID = S.Guest_ID
WHERE G.City = 'Miami' AND S.Room = '222';
However, I get the following error:
ORA-00933: SQL command not properly ended
00933. 00000 - "SQL command not properly ended"
*Cause:
*Action:
Error at Line: 2 Column: 12
I don't see any problem in line 2 and the error is not very descriptive. It appears to be something to do with the as
keyword. If I remove it, it works fine. However, I want my queries to be very verbose. Therefore, I must figure out a way to fix whatever the problem is without removing the as
keyword.
This is the structure of the tables involved:
CREATE TABLE GUEST
(
GUEST_ID NUMBER NOT NULL,
LAST_NAME VARCHAR2(50 BYTE),
FIRST_NAME VARCHAR2(50 BYTE),
CITY VARCHAR2(50 BYTE),
LOYALTY_NUMBER VARCHAR2(10 BYTE)
);
CREATE TABLE STAY
(
STAY_ID NUMBER NOT NULL,
GUEST_ID NUMBER NOT NULL,
HOTEL_ID NUMBER NOT NULL,
START_DATE DATE,
NUMBER_DAYS NUMBER,
ROOM VARCHAR2(10 BYTE)
);
Thanks for any help in advance.
Both are correct. Oracle allows the use of both.
SQL AS keyword is used to give an alias to table or column names in the queries.
SQL allows the use of both column aliases and table aliases. This is done using the SQL AS keyword, which is an optional keyword in many SQL statements including SELECT, UPDATE, and DELETE. Column aliases allow you to use a different and often simpler name for a column in your query.
Description. Oracle ALIASES can be used to create a temporary name for columns or tables. COLUMN ALIASES are used to make column headings in your result set easier to read.
You can use AS
for table aliasing on many SQL servers (at least MsSQL, MySQL, PostrgreSQL) but it's always optional and on Oracle it's illegal.
So remove the AS
:
SELECT G.Guest_ID, G.First_Name, G.Last_Name
FROM Guest G
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