Issue with like operator
Hi All,
we are using like operator for search functionality (oracle 10G).
could any one help me in handling null, when we use like operator.
Ex:
select empno,ename,d.deptno
from emp e, dept d
where e.deptno = d.deptno
and e.ename like '%JO%';
we have a text box in the front end to key in employee name (ename) or part of ename. when user doesnt use this option, he leaves it blank.
so In the above query, if ename is null then my query fails.
could anybody help me out in handling this scenario.
My query should still give me all the employee ids, if the ename is blank.
using dynamic sql is not advisable.
Thanks
Manju
Something like this ->
satyaki>select *
2 from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
PL/SQL Release 10.2.0.3.0 - Production
CORE 10.2.0.3.0 Production
TNS for 32-bit Windows: Version 10.2.0.3.0 - Production
NLSRTL Version 10.2.0.3.0 - Production
Elapsed: 00:00:00.26
satyaki>
satyaki>
satyaki>select *
2 from emp
3 where upper(ename) like nvl('%'||upper('&str')||'%',upper(ename));
Enter value for str:
old 3: where upper(ename) like nvl('%'||upper('&str')||'%',upper(ename))
new 3: where upper(ename) like nvl('%'||upper('')||'%',upper(ename))
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
9999 SATYAKI SLS 7698 02-NOV-08 55000 3455 10
7777 SOURAV SLS 14-SEP-08 45000 3400 10
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 4450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 7000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
13 rows selected.
Elapsed: 00:00:00.02
satyaki>
satyaki>/
Enter value for str: sa
old 3: where upper(ename) like nvl('%'||upper('&str')||'%',upper(ename))
new 3: where upper(ename) like nvl('%'||upper('sa')||'%',upper(ename))
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
9999 SATYAKI SLS 7698 02-NOV-08 55000 3455 10
Elapsed: 00:00:00.08Regards.
Satyaki De.
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