PL/SQL procedure, cursor, where clause - plsql

i ve got some database with customer id, names, surnames. I made procedure with some parameters, which includes cursor with parameters. And i want with that cursor show customer names, surnames, id. And i want show that, where i call procedure, and i for example write as parameters in procedure for example NULL NULL, it show me all record. Next if i write NULL, Surname, it show me records with that surnames. If i write firstname,NULL, it show record only records with that first name and if i write Firstname,lastname, it show me only that record which matching this. So my procedure works fine, but i need right where clause n cursor. This is my cursor
CREATE OR REPLACE PROCEDURE test_two(c_f_name VARCHAR2,c_l_name VARCHAR2) IS
CURSOR c2(f_name VARCHAR2,l_name VARCHAR2) IS
SELECT cus_id,cus_l_name,cus_f_name
FROM CUSTOMER
WHERE (cus_f_name IS NOT NULL AND (cus_f_name = f_name orcus_l_name
IS NULL))
AND (cus_l_name IS NOT NULL AND (cus_l_name = l_name or cus_f_name IS
NULL));
v_complex c2%ROWTYPE;
lv_show VARCHAR2(20);
f_name VARCHAR2(20) := c_f_name;
l_name VARCHAR2(20) := c_l_name;
BEGIN
open c2(f_name,l_name);
LOOP
FETCH c2 INTO v_complex;
dbms_output.put_line(v_complex.cus_id|| ' ' ||v_complex.cus_f_name|| ' '
||v_complex.cus_l_name);
EXIT WHEN c2%NOTFOUND;
END LOOP;
CLOSE c2;
END;
EVERYTHING IS IFNE IN THAT PROCEDURE BUT I NEED ONLY RIGHT WHERE CLAUSE! THANK YOU

You could use a combination of LIKE and NVL.
WHERE cus_f_name LIKE NVL(c_f_name, '%')
AND cus_l_name LIKE NVL(c_l_name, '%');
Explanation:
The function NVL returns the first parameter if it is not NULL.
Otherwise it returns the second parameter.

Related

How to fetch the records from cursor which contains columns from different table?

FIRST PROCEDURE
create or replace PROCEDURE TESTPROCEDURE
(
P_LAF_PK IN NUMBER,
P_RET_VAL OUT SYS_REFCURSOR
) AS
BEGIN
OPEN p_RET_VAL FOR
SELECT LAF.AF_FEE,LAF.AF_FEES_PAYABLE,
LAH.LH_DECISION_DT,LAH.LH_ISSUED
FROM LH_APP_HDR LAH JOIN LIQ_APP_FEE LAF
ON AF_PK = LH_PK
WHERE LAF_APPID = P_LAF_PK;
END TESTPROCEDURE;
Calling this procedure in another procedure
SECOND PROCEDURE
create or replace PROCEDURE TESTPROCEDURE1
AS
BEGIN
DECLARE
V_LIQ_CURSOR SYS_REFCURSOR;
V_LIQ_CURSOR_OUT1 LIQ_APP_FEE%ROWTYPE;
BEGIN
TESTPROCEDURE (2727,V_LIQ_CURSOR);
LOOP
FETCH V_LIQ_CURSOR INTO V_LIQ_CURSOR_OUT1; -- getting error in this line like "Return
types of Result Set variables or query do not match"
EXIT WHEN V_LIQ_CURSOR%NOTFOUND;
IF(V_LIQ_CURSOR_OUT1.AF_FEE != 0) THEN
SELECT (V_LIQ_CURSOR_OUT1.AF_FEES_PAYABLE + V_LIQ_CURSOR_OUT1.AF_FEE) INTO V_TOTALFEE FROM DUAL;
END IF;
END TESTPROCEDURE1;
Can anyone tell me how to get the result from cursor which contains multiple table columns.
NOTE:
I want only two columns from the first procedure

How to get value from nested table in pl sql table

I have created nested table as follow:
CREATE OR REPLACE TYPE EMP_NO_NAME
AS OBJECT
(
EMPNO NUMBER(4),
ENAME VARCHAR2(20),
JOB VARCHAR2(20),
MGR NUMBER(5),
HIREDATE DATE,
SAL NUMBER(7,2)
);
CREATE OR REPLACE TYPE EMP_TABLE IS TABLE OF EMP_NO_NAME;
-----------------------
CREATE TABLE NESTED_EMP
(
DEPTNO NUMBER(2) ,
EMPLOYEE EMP_TABLE
)
NESTED TABLE EMPLOYEE STORE AS NESTED_EMPLOYEE;
INSERT INTO NESTED_EMP (DEPTNO,EMPLOYEE)
VALUES (10,EMP_TABLE(EMP_NO_NAME(7839,'KING','PRESIDENT',NULL,'17-NOV-81',5000),
EMP_NO_NAME(7782,'CLARK','MANAGER',7839,'09-JUN-81',2450),
EMP_NO_NAME(7934,'MILLER','CLERK',7782,'23-JAN-82',1300)
)
);
INSERT INTO NESTED_EMP (DEPTNO,EMPLOYEE)
VALUES (20,EMP_TABLE(EMP_NO_NAME(7566,'JONES','MANAGER',7839,'02-APR-81',2975),
EMP_NO_NAME(7902,'FORD','ANALYST',7566,'03-DEC-81',3000),
EMP_NO_NAME(7369,'SMITH','CLERK',7902,'17-DEC-80',800),
EMP_NO_NAME(7788,'SCOTT','ANALYST',7566,'09-DEC-82',3000),
EMP_NO_NAME(7876,'ADAMS','CLERK',7788,'12-JAN-83',1100)
)
);
INSERT INTO NESTED_EMP (DEPTNO,EMPLOYEE)
VALUES (20,EMP_TABLE(EMP_NO_NAME(7698,'BLAKE','MANAGER',7839,'01-MAY-81',2850),
EMP_NO_NAME(7654,'MARTIN','SALESMAN',7698,'28-SEP-81',1250),
EMP_NO_NAME(7499,'ALLEN','SALESMAN',7698,'20-FEB-81',1600),
EMP_NO_NAME(7844,'TURNER','SALESMAN',7698,'08-SEP-81',1500),
EMP_NO_NAME(7900,'JAMES','CLERK',7698,'03-DEC-81',950),
EMP_NO_NAME(7521,'WARD','SALESMAN',7698,'22-FEB-81',1250)
)
);
Now I getting the value of nested table in plsql:
DECLARE
CURSOR EMPLOYEE IS
select p.* from NESTED_EMP p1 ,table(p1.employee) p;
V_EMP EMP_TABLE;
BEGIN
FOR V_EMP IN EMPLOYEE
LOOP
EXIT WHEN EMPLOYEE%NOTFOUND;
END LOOP;
FOR MYINDEX IN V_EMP.FIRST..V_EMP.LAST
LOOP
DBMS_OUTPUT.PUT_LINE(V_EMP(MYINDEX).ENAME);
END LOOP;
END;
/
END;
Error report:
ORA-06531: Reference to uninitialized collection ORA-06512: at line 10
06531. 00000 - "Reference to uninitialized collection"
*Cause: An element or member function of a nested table or varray
was referenced (where an initialized collection is needed)
without the collection having been initialized.
*Action: Initialize the collection with an appropriate constructor
or whole-object assignment.
How to get nested table value in plsql table ?
The problem with your code is that V_EMP is not actually of type EMP_TABLE. Rather, it's an EMPLOYEE.ROWTYPE. When you initialize a cursor for loop, the variable is automatically made an appropriate ROWTYPE, overriding any previous declarations.
The good news is that, since you've already referenced the nested table in the query, you don't need to do so in the loop (it's already been exploded). Your PL/SQL can be vastly simplified:
DECLARE
CURSOR employee IS
SELECT p.*
FROM nested_emp p1 CROSS JOIN TABLE (p1.employee) p;
BEGIN
FOR v_emp IN employee LOOP
DBMS_OUTPUT.put_line (v_emp.ename);
END LOOP;
END;
/
You'll notice the EXIT WHEN was removed as well. A cursor for loop terminates automatically after the last record.
An alternative would be to not explode the nested table in the query. Then you would need two loops:
DECLARE
CURSOR employee IS
SELECT p.*
FROM nested_emp p;
BEGIN
FOR v_emp IN employee LOOP
for i in v_emp.employee.first..v_emp.employee.last loop
DBMS_OUTPUT.put_line (v_emp.employee(i).ename);
end loop;
END LOOP;
END;
/

How to use a bind variable in trigger body?

I'm new to PL/SQL. I'm using oracle 11g XE along with sql developer. I'm trying to create to create an after insert trigger as follows
create or replace trigger tr1
after
insert ON
employee
for each row
begin
print :new.emp_id;
end;
The employee table is as follows
create table employee
( emp_id varchar2(5) primary key,
emp_name varchar2(10),
salary number,
company varchar2(10) foreign key references companies(comp_name)
);
When I run the statement I got a 'enter binds' window for the bind variable :new. But I was confused that why do I need to enter the value for :new since it is pseudorecord. Then I entered 'employee' as the values for :new. Now I'm getting the following error.
Error(2,8): PLS-00103: Encountered the symbol "" when expecting one of the following: := . ( # % ; The symbol ":=" was substituted for "" to continue.
Your problem is not in the :new pseudorecord. The error is coming from the usage of print, which is used to print the bind variable used in successful PL/SQL block or used in an EXECUTE command. For example, you can use it this way:
VARIABLE n NUMBER
BEGIN
:n := 1;
END;
/
Then
PRINT n;
But if you want to test the value being inserted, you can use DBMS_OUTPUT.PUT_LINE like this:
create or replace trigger tr1
after
insert ON
employee
for each row
BEGIN
dbms_output.put_line(:new.emp_id);
END;
/
Enable DBMS_OUTPUT window in your SQL Developer, then run
insert into employee values(1, 'empName', 1000, 'ABC');
You'll see 1 printed out.
However, you can always test the value from the table. Because the value should be already inserted into table. You can just query.

pl/sql displaying all columns of a table

employee table schema
employee(id, name, company, salary);
procedure created to display all the column values
create or replace procedure p1
IS
BEGIN
select * from employee;
END;
/
exe p1;
However, this does not display the data.
Your PL/SQL block is not valid, and won't even run. You need to either return the data back to the client, or if you're using SQL*Plus use dbms_output.put_line to print the query resultset.
create or replace procedure p1
IS
BEGIN
DBMS_OUTPUT.ENABLE;
FOR emp_rec in select * from employee LOOP
dbms_output.put_line('EMployee id: || emp_rec.emp_id || ' Name: ' || emp_rec ename);
END LOOP
END;
/
Change the column name suitably

PL/SQL Inserting 1 row for each result in a select

I am writing a PL/SQL Procedure that performs a select based on input variables and then inserts a row for each result in the select. I am having trouble debugging what is wrong with my query due my newness to PL/SQL. I know this must be easy, but I am stuck here for some reason. Thanks for your help!
CREATE OR REPLACE PROCEDURE setup_name_map(ranking_id IN NUMBER, class_string IN VARCHAR2)
IS
BEGIN
FOR rec IN (SELECT NAME_ID FROM PRODUCT_NAMES WHERE NAME = class_string)
LOOP
EXECUTE IMMEDIATE 'INSERT INTO NAME_RANKING (NAME_ID, RANKING_ID) VALUES (' || rec.NAME_ID || ', ' || ranking_id || ')';
END LOOP;
END;
According to the Oracle Developer Compiler... 'NAME_ID' is an invalid identifier. I've tried putting it in quotes but no dice. It also complains that loop index variables 'REC' use is invalid. Any help is much appreciated.
There is no need for dynamic SQL here:
BEGIN
FOR rec IN (SELECT NAME_ID FROM PRODUCT_NAMES
WHERE NAME = class_string)
LOOP
INSERT INTO NAME_RANKING (NAME_ID, RANKING_ID)
VALUES (rec.NAME_ID, ranking_id);
END LOOP;
END;
Better still you can avoid a slow row-by-row cursor approach like this:
BEGIN
INSERT INTO NAME_RANKING (NAME_ID, RANKING_ID)
SELECT NAME_ID, ranking_id FROM PRODUCT_NAMES
WHERE NAME = class_string;
END;
If you really did need the dynamic SQL you should not be concatenating values into it, but using bind variables:
BEGIN
FOR rec IN (SELECT NAME_ID FROM PRODUCT_NAMES
WHERE NAME = class_string)
LOOP
EXECUTE IMMEDIATE 'INSERT INTO NAME_RANKING
(NAME_ID, RANKING_ID) VALUES (:b1, :b2)
USING rec.NAME_ID, ranking_id;
END LOOP;
END;

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