RTRIM function
RTRIM removes a set of characters from the right of a string.
RTRIM stands for "right trim".
The general format for this function is:
RTRIM(string[, characters_to_remove])By default the RTRIM removes the spaces:
SQL> SELECT RTRIM('days ') FROM dual;
RTRI
----
days
SQL>
Remove a letter:
SQL> SELECT RTRIM('days', 's') FROM dual;
RTR
---
day
SQL>
CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
ENAME VARCHAR2(10),
JOB VARCHAR2(9),
SAL NUMBER(7, 2),
DEPTNO NUMBER(2));
INSERT INTO EMP VALUES (1, 'SMITH', 'CLERK', 800, 20);
INSERT INTO EMP VALUES (2, 'ALLEN', 'SALESMAN', 1600, 30);
INSERT INTO EMP VALUES (3, 'WARD', 'SALESMAN', 1250, 30);
INSERT INTO EMP VALUES (4, 'JONES', 'MANAGER', 2975, 20);
INSERT INTO EMP VALUES (5, 'MARTIN','SALESMAN', 1250, 30);
INSERT INTO EMP VALUES (6, 'BLAKE', 'MANAGER', 2850, 30);
INSERT INTO EMP VALUES (7, 'CLARK', 'MANAGER', 2850, 10);
INSERT INTO EMP VALUES (8, 'SCOTT', 'ANALYST', 3000, 20);
INSERT INTO EMP VALUES (9, 'KING', 'PRESIDENT',3000, 10);
INSERT INTO EMP VALUES (10,'TURNER','SALESMAN', 1500, 30);
INSERT INTO EMP VALUES (11,'ADAMS', 'CLERK', 1500, 20);
SQL> select ename, rtrim(ename,'N') from emp;
ENAME RTRIM(ENAM
---------- ----------
SMITH SMITH
ALLEN ALLE
WARD WARD
JONES JONES
MARTIN MARTI
BLAKE BLAKE
CLARK CLARK
SCOTT SCOTT
KING KING
TURNER TURNER
ADAMS ADAMS
11 rows selected.
SQL>