USING IF statement inside the CASE in P/L SQL ? - plsql

DECLARE
H EMP.EMPNO%TYPE;
F EMP.ENAME%TYPE;
D NUMBER;
S VARCHAR(20);
BEGIN
H := :ENTER_A_DEPTNO;
SELECT ENAME, EMPNO INTO F , D
FROM EMP
WHERE EMPNO = H;
CASE
WHEN D = H THEN
S := F;
WHEN D != H THEN
S := ' NO DATA !!';
END CASE;
DBMS_OUTPUT.PUT_LINE(S);
END;
when i put any number ID not from the table it's not working with the second if statement . I'm wondering how to display the message ?
ORA-01403: no data found

You can use the exception block:
DECLARE
H EMP.EMPNO%TYPE;
F EMP.ENAME%TYPE;
BEGIN
H := :ENTER_A_DEPTNO;
SELECT ENAME INTO F
FROM EMP
WHERE EMPNO = H;
DBMS_OUTPUT.PUT_LINE(F);
EXCEPTION
WHEN NO_DATA_FOUND THEN
DBMS_OUTPUT.PUT_LINE(' NO DATA !!');
END;
There is no need for an if or case, because when the value was found, you can be sure the result concerns the correct employee number. If not found, the exception is raised, and execution is diverted to the EXCEPTION block.

Related

PL/SQL: I get expression 'I' cannot be used as an assignment target

My code:
create table info(str varchar2(30));
declare
cursor c(job emp_ast.job_id%type, dep emp_ast.department_id%type) is select employee_id
from emp_ast
where job_id=job and department_id=dep;
type t_job is table of emp_ast.job_id%type;
t t_job:=t_job();
emp emp_ast.employee_id%type;
i number(3);
begin
select job_id
bulk collect into t
from emp_ast;
for i in 10..270 loop
for j in 1..t.count loop
open c(i, t(j));
loop
fetch c into emp;
insert into info
values (i||' '||t(j)||' '||emp);
exit when c%notfound;
end loop;
i:=i+10;
end loop;
end loop;
end;
/
I get "expression 'I' cannot be used as an assignment target", reffering to the line where I increment i by 10. I am trying to save the department_id, employee_id and job_id as a string in a table for each department and each job.
At the point where you get that message, i refers to the loop control variable i defined in the line for i in 10..270 loop, not the int(3) variable defined earlier. In PL/SQL a loop definition defines a variable which is only accessible inside the loop, and which you cannot alter. I suggest you change the name of one or the other to make them unique.
EDIT
PL/SQL doesn't provide a way to step by more than 1 in a computed FOR loop. Instead, you will need to compute the desired department number value within the loop:
DECLARE
CURSOR c(job EMP_AST.JOB_ID%TYPE,
dep EMP_AST.DEPARTMENT_ID%TYPE)
IS SELECT EMPLOYEE_ID
FROM EMP_AST
WHERE JOB_ID = job AND
DEPARTMENT_ID = dep;
TYPE t_job IS TABLE OF EMP_AST.JOB_ID%TYPE;
t t_job := t_job();
emp EMP_AST.EMPLOYEE_ID%TYPE;
nDepartment NUMBER;
BEGIN
SELECT job_id
BULK COLLECT INTO t
FROM EMP_AST;
FOR i IN 1..27 LOOP
nDepartment := i * 10;
FOR j IN 1..t.COUNT LOOP
OPEN c(t(j), nDepartment);
LOOP
FETCH c INTO emp;
INSERT INTO info
VALUES (nDepartment || ' ' || t(j) || ' ' || emp);
EXIT WHEN c%notfound;
END LOOP; -- cursor c
CLOSE c;
END LOOP; -- j
END LOOP; -- i
END;
/
Note that in the code above the nDepartment value is computed within the i loop, which now increments from 1 to 27 instead of going from 10 to 270.

PL/SQL: I get the error "Encountered the symbol "OPEN" when expecting one of the following: . ( * # % & - + / "

My code:
create table dep_emp_ast(
cod_dep number(3),
cod_ang number(3));
declare
type cref is ref cursor;
c cref;
type tab_imb is table of dept_ast.department_id%type;
t tab_imb:=tab_imb();
v_ang emp_ast.employee_id%type;
begin
select distinct department_id
bulk collect into t
from dept_ast;
forall i in 1..t.count
open c for select employee_id
from emp_ast
where department_id=t(i);
loop
fetch c into v_ang
insert into dep_emp_ast
values(t(i),v_ang);
exit when c%notfound;
end loop;
close c;
end;
/
My error says I cannot open a cursor there. But why? I want to re-open the cursor and re-use it for every value of t(i).
forall must be followed by a DML statement:
for example:
forall i in depts.first..depts.last
delete employees_temp
where department_id = depts(i);
I think what you wanted was something like:
declare
c sys_refcursor;
type tab_imb is table of dept_ast.department_id%type;
t tab_imb:=tab_imb();
v_ang emp_ast.employee_id%type;
begin
select distinct department_id
bulk collect into t
from dept_ast;
for i in 1..t.count loop
open c for
select employee_id
from emp_ast
where department_id=t(i);
loop
fetch c into v_ang;
insert into dep_emp_ast
values(t(i),v_ang);
exit when c%notfound;
end loop;
close c;
end loop;
end;
which can be simplified to
begin
for d in (
select distinct department_id
from dept_ast
)
loop
for e in (
select employee_id
from emp_ast
where department_id = d.department_id
)
loop
insert into dep_emp_ast
values (d.department_id, e.employee_id);
end loop;
end loop;
end;
which boils down to
insert into dep_emp_ast (cod_dep, cod_ang)
select e.department_id, e.employee_id
from emp_ast e
where e.department_id in
( select department_id
from dept_ast );

Bulk collect and forall with dynamic query

Declare
Vquery varchar2(32000);
Vitem varchar2(50);
Vskuloc varchar2(50);
vstartdate Date;
Vdur Number;
vtype Number;
vqty Float(126);
GP_ohpost Date:= fnc_ohpost;
sdate1 Date:= to_date('01/01/1970','dd/mm/yyyy');
Cursor C_DRIVER is
(Select h.*,b.item,b.skuloc,h.rowid
FROM SCPOMGR.histwide h, SCPOMGR.dfutosku b
WHERE h.dmdunit=b.dmdunit
AND h.loc=b.dfuloc
AND (b.eff = Sdate1 OR b.eff <= h.startdate
AND b.disc = Sdate1 OR b.disc > h.startdate)
And NOT EXISTS (SELECT 1 FROM SCPOMGR.SKUHIST d
WHERE b.dmdunit = d.item
AND b.skuloc = d.loc
AND h.startdate = d.startdate
)) order by h.StartDate;
TYPE GP_cursor_Type IS TABLE OF C_DRIVER%ROWTYPE;
GP_cursor_tab GP_cursor_Type := GP_cursor_type();
c_limit constant PLS_INTEGER DEFAULT 10;
TYPE GP_Insert_type IS TABLE OF scpomgr.skuhist%ROWTYPE;
GP_Insert_tab GP_Insert_type := GP_Insert_type();
GP_tot_accept_fetched NUMBER := 0;
begin
OPEN C_DRIVER;
LOOP
FETCH c_driver BULK COLLECT INTO GP_cursor_tab limit c_limit;
Exit when c_driver%NOTFOUND;
FOR i IN GP_cursor_tab.FIRST .. GP_cursor_tab.LAST LOOP
vquery:= 'Select ...<skipped to make post shortest>';
Execute immediate vquery BULK COLLECT INTO GP_Insert_tab;
FORALL i IN INDICES OF GP_Insert_tab
Insert into scpomgr.skuhist
values( GP_Insert_tab(i).startdate
,1
,10080
,GP_Insert_tab(i).qty
,GP_Insert_tab(i).item
,GP_Insert_tab(i).loc
);
End Loop;
End Loop;
Close C_DRIVER;
END;
/
What i want to do here is i want to use the forall query outside of loop but if i am using the forall with the 2 nd array outside the loop then.all of the records are not getting inserted to the final table..please suggest me some solution....
Ankita.
I didn't know the structure of your tables, so i made a simple tables to understand what should work here:
create table histwide (f1 number);
insert into histwide values (1);
insert into histwide values (2);
create table skuhist (f1 number);
select * from histwide
select * from skuhist
Now i changed your code keeping changed code in comments. Seems it works. I think the trouble was because of you are used Exit when c_driver%NOTFOUND; in begining of loop. It is wrong for FORALL because after first fetching cursor is empty (if limit is reached).
So, my solution of your case:
Declare
Vquery varchar2(32000);
Vitem varchar2(50);
Vskuloc varchar2(50);
vstartdate Date;
Vdur Number;
vtype Number;
vqty Float(126);
GP_ohpost Date:= trunc(sysdate); --fnc_ohpost;
sdate1 Date:= to_date('01/01/1970','dd/mm/yyyy');
Cursor C_DRIVER is
(Select h.*--,b.item,b.skuloc,h.rowid
--FROM SCPOMGR.histwide h, SCPOMGR.dfutosku b
FROM histwide h
/*WHERE h.dmdunit=b.dmdunit
AND h.loc=b.dfuloc
AND (b.eff = Sdate1 OR b.eff <= h.startdate
AND b.disc = Sdate1 OR b.disc > h.startdate)
And NOT EXISTS (SELECT 1 FROM SCPOMGR.SKUHIST d
WHERE b.dmdunit = d.item
AND b.skuloc = d.loc
AND h.startdate = d.startdate
)) order by h.StartDate*/
);
TYPE GP_cursor_Type IS TABLE OF C_DRIVER%ROWTYPE;
GP_cursor_tab GP_cursor_Type := GP_cursor_type();
c_limit constant PLS_INTEGER DEFAULT 10;
TYPE GP_Insert_type IS TABLE OF skuhist%ROWTYPE; --scpomgr.skuhist%ROWTYPE;
GP_Insert_tab GP_Insert_type := GP_Insert_type();
GP_tot_accept_fetched NUMBER := 0;
begin
OPEN C_DRIVER;
LOOP
FETCH c_driver BULK COLLECT INTO GP_cursor_tab limit c_limit;
Exit when GP_cursor_tab.count = 0;
dbms_output.put_line('arr cur size: '||GP_cursor_tab.count);
FOR i IN GP_cursor_tab.FIRST .. GP_cursor_tab.LAST LOOP
vquery:= 'Select * from histwide';
Execute immediate vquery BULK COLLECT INTO GP_Insert_tab;
dbms_output.put_line('arr size: '||GP_Insert_tab.count);
-- FORALL j IN INDICES OF GP_Insert_tab
FORALL j in GP_Insert_tab.first..GP_Insert_tab.last --works too
Insert into skuhist --scpomgr.skuhist
values(GP_Insert_tab(j).f1
/*GP_Insert_tab(i).startdate
,1
,10080
,GP_Insert_tab(i).qty
,GP_Insert_tab(i).item
,GP_Insert_tab(i).loc*/
);
End Loop;
Exit when c_driver%NOTFOUND; --it should be at end of the loop.
End Loop;
Close C_DRIVER;
END;
/
Hope it will help you

PL/SQL: Cursor ::Retrieve a list of employees for each department

How to retrieve list of employees for each department from table EMP into a comma-delimited new table
something like:
[column x:ie deptno] [column y:ie ename]
--------------------------
7 Jesus, María, José
5 Staz, Przemek, Tomek
6 John, Jane, Bob
below table is where I want to put my result from Function concatenate_list compilation
CREATE TABLE Z
(
x NUMBER(2) NOT NULL,
y VARCHAR2 (4000) NOT NULL
);
SET SERVEROUTPUT ON
CREATE OR REPLACE FUNCTION concatenate_list (xy_cursor IN SYS_REFCURSOR)
RETURN VARCHAR2
IS
lret VARCHAR2(30000);
ltemp VARCHAR2(30000);
BEGIN
LOOP
FETCH xy_cursor
INTO ltemp;
EXIT WHEN xy_cursor%notfound;
lret := lret || ',' || ltemp;
END LOOP;
RETURN LTRIM(lret, ',');
END;
/
SHOW ERRORS
how to insert the results from "Function concatenate_lit compile" and get a result as mentioned above.
Maybe using something like this:
INSERT INTO Z( x, y) SELECT e1.x,
concatenate_list(CURSOR(SELECT e2.y FROM EMP e2 WHERE e2.x= e1.x));
but how to set it up form inside the PL/SQL block
This may help you.
declare
type cur_name is ref cursor;
emp_name cur_name;
v_ename emp.ename%type;
v_all_ename varchar2(1000);
v_deptno emp.deptno%type;
cursor c is select deptno,cursor(select ename from emp e where e.deptno=f.deptno) from emp f group by deptno;
begin
open c;
loop
fetch c into v_deptno,emp_name;
exit when c%notfound;
loop
fetch emp_name into v_ename;
exit when emp_name%notfound;
v_all_ename:=v_all_ename||v_ename;
v_all_ename:=v_all_ename||',';
end loop;
dbms_output.put_line(v_deptno||' '||v_all_ename);
v_all_ename:='';
end loop;
close c;
end;

PLS-00103: Encountered the symbol "&" when expecting one of the following: ( - + case mode new not null

declare
v_empno empdab.eno%type:=&n;
v_empdab empdab%rowtype;
begin
select eno, ename,doj,position,salary,comm,address into v_empdab from empdab where eno=v_empno;
dbms_output.put_line(v_empdab.eno||v_empdab.ename||v_empdab.doj||v_empdab.position||v_empdab.salary||v_empdab.comm||v_empdab.address);
end ;
SQL*Plus named parameters can be used in PL/SQL. I think you have not send us the real code.
Script start cc.sql
accept n prompt 'Enter value for n :'
set serveroutput on
declare
v_v test.v%type := &n;
r_v test%rowtype;
begin
dbms_output.put_line(v_v);
select v into v_v from test where rownum = 1;
dbms_output.put_line(v_v);
dbms_output.put_line(&n);
end;
/
End Script cc.sql
   
SQL> #cc
Enter value for n :'abc'
old 2: v_v test.v%type := &n;
new 2: v_v test.v%type := 'abc';
old 9: dbms_output.put_line(&n);
new 9: dbms_output.put_line('abc');
abc
a
abc
PL/SQL procedure successfully completed.
SQL>

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