Here is my procedure where i want to insert values with the conditions like emp id start with sequence 131, phone number must be 13 digits, hire date not greater than sys date and salary not greater than 50,000. while executing im facing error . how to solve this.
create or replace procedure empinsert AS
cursor employee is select length(PHONE_NUMBER),HIRE_DATE,SAL from emp;
e_mobile_no emp.phone_number%type;
e_hire_date emp.hire_date%type;
e_salary emp.sal%type;
Begin
open employee ;
loop
fetch employee into e_mobile_no,e_hire_date,e_salary;
if ( e_mobile_no = 13 and e_hire_date < sysdate and e_salary <=50000 ) then
INSERT INTO EMP (EMP_ID,
EMP_NAME,
EMAIL,
PHONE_NUMBER,
HIRE_DATE,
JOB_ID,
SAL)
values(empinc.nextval, 'ramji','ramji#gmail.com','8975432109875','10/07/2021','JUN_TECH',40000);
else
exit;
end if;
end loop;
end;
/
Related
Well I have a procedure were I add two the salary of two employees. I get the salary with the id of the employee. If the employee was not found I should set the salary to 0. This is my code
PROCEDURE private_salaries(
sal_res OUT NUMBER,
emp_1 NUMBER,
emp_2 NUMBER)
IS
sal_1 NUMBER;
sal_2 NUMBER;
BEGIN
SELECT salary INTO sal_1 FROM employees WHERE employee_id = emp_1;
SELECT salary INTO sal_2 FROM employees WHERE employee_id = emp_2;
END;
The procedure can be simplified as below,
create or replace PROCEDURE private_salaries(
emp_1 NUMBER,
emp_2 NUMBER,
sal_res out NUMBER)
is
begin
select sal1 + sal2 into sal_res
from
(
select
nvl((SELECT salary FROM employees WHERE employee_id = emp_1),0) sal1,
nvl((SELECT salary FROM employees WHERE employee_id = emp_2),0) sal2
from dual);
end;
Test Cases :
When both of them exists - Returns sum of the salary
When either one doesn't exists - Returns salary of one that exists
When none of them exists - Returns zero.
Recommendation - Use function instead of procedure and you may use them in SQL,for procedure a PL/SQL block is required though.
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.
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;
I'm trying to create a PL/SQL procedure where by I delete records that are grouped and selected by cursor but I only want one record remaining. I want to delete first by Xcomment, if there are multiple entries with id_number, activity_code, start_dt, activity_participation_code exist, then delete all but ONE entry with blank/null xcomment. If there are multiple entries with blank xcomment, then delete all but one with blank table_nmb. If multiple entries with blank table_nmb then delete highest sequence until only one is left. Essentially, I only want one record per all these fields. I'm having trouble thinking of how to do this so any help would be appreciated.
Here is my code so far:
Create Or Replace Function Y_Cleanup_Cursor
Return Sys_Refcursor
As
My_Cursor Sys_Refcursor;
Begin
Open My_Cursor For
Select Q.Id_Number, Q.Activity_Code, Q.Start_Dt, Q.Activity_Participation_Code, Q.Rec_Count, A.Xcomment, A.Table_Nmb, A.Xsequence
From (Select Id_Number, Activity_Code, Start_Dt, Activity_Participation_Code, Count(0) As Rec_Count
From Activity A
Group By Id_Number, Activity_Code, Start_Dt, Activity_Participation_Code
Having Count(0) > 1) Q,
Activity A
Where
Q.Id_Number = A.Id_Number And
Q.Activity_Code = A.Activity_Code And
Q.Start_Dt = A.Start_Dt And
Q.Activity_Participation_Code = A.Activity_Participation_Code;
Return My_Cursor;
End Y_Cleanup_Cursor;
Create Or Replace Procedure Help_Me_Please(Code In Varchar2)
Is
-- Declare Variables
-- I Stands For Internal Variable
L_Cursor Sys_Refcursor;
I_Id_Number Varchar2(10 Byte);
I_Xsequence Number (6);
I_Activity_Code Varchar2(05 Byte);
I_Start_Dt Varchar2(08 Byte);
I_Activity_Participation_Code Varchar2(02 Byte);
I_Table_Nmb Varchar2(15 Byte);
I_Xcomment Varchar2(255 Byte);
I_Rec_Count Number (6);
L_Counter Integer;
Begin
L_Cursor := Y_Cleanup_Cursor;
Loop
Fetch L_Cursor Into
I_Id_Number, I_Activity_Code, I_Start_Dt, I_Activity_Participation_Code, I_Rec_Count, I_Xcomment, I_Table_Nmb, I_Xsequence;
Select Count (Id_Number)
Into L_Counter
From Activity Where
Id_Number = I_Id_Number
And Activity_Code = I_Activity_Code
And Start_Dt = I_Start_Dt
And Activity_Participation_Code = I_Activity_Participation_Code
And Trim(Xcomment) Is Null;
If L_Counter <> I_Rec_Count Then
Begin
Delete From Activity
Where
Id_Number = I_Id_Number
And Activity_Code = I_Activity_Code
And Start_Dt = I_Start_Dt
And Activity_Participation_Code = I_Activity_Participation_Code
And Trim(Xcomment) Is Null;
end;
End If;
Exit When L_Cursor%Notfound;
End Loop;
Close L_Cursor;
End Help_Me_Please;
From what I gather you want to delete all rows except 1 where there are repeating columns
first make sure to backup your table:
create table [backup_table] as select * from [table];
Try This:
DELETE FROM backup_table
WHERE rowid not in
(SELECT MIN(rowid)
FROM backup_table
GROUP BY [col1], [col2]);
Col1 and col2, etc are the columns that should be identical
We have a table which has three columns in it:
Customer_name, Age_range, Number_of_people.
1 1-5 10
1 5-10 15
We need to return all the number of people in different age ranges as rows of a single query. If we search for customer #1, the query should just return one row:
Header- Age Range (1-5) Age Range (5-10)
10 15
We needed to get all the results in a single row; When I query for customer 1, the result should be only number of people in a single row group by age_range.
What would be the best way to approach this?
You need to manually perform a pivot:
SELECT SUM(CASE WHEN age_range = '5-10'
THEN number_of_people
ELSE NULL END) AS nop5,
SUM(CASE WHEN age_range = '10-15'
THEN number_of_people
ELSE NULL END) AS nop10
FROM customers
WHERE customer_name = 1;
There are easy solutions with 10g and 11g using LISTGAGG, COLLECT, or other capabilities added after 9i but I believe that the following will work in 9i.
Source (http://www.williamrobertson.net/documents/one-row.html)
You will just need to replace deptno with customer_name and ename with Number_of_people
SELECT deptno,
LTRIM(SYS_CONNECT_BY_PATH(ename,','))
FROM ( SELECT deptno,
ename,
ROW_NUMBER() OVER (PARTITION BY deptno ORDER BY ename) -1 AS seq
FROM emp )
WHERE connect_by_isleaf = 1
CONNECT BY seq = PRIOR seq +1 AND deptno = PRIOR deptno
START WITH seq = 1;
DEPTNO CONCATENATED
---------- --------------------------------------------------
10 CLARK,KING,MILLER
20 ADAMS,FORD,JONES,SCOTT,SMITH
30 ALLEN,BLAKE,JAMES,MARTIN,TURNER,WARD
3 rows selected.
This will create a stored FUNCTION which means you can access it at any time.
CREATE OR REPLACE FUNCTION number_of_people(p_customer_name VARCHAR2)
RETURN VARCHAR2
IS
v_number_of_people NUMBER;
v_result VARCHAR2(500);
CURSOR c1
IS
SELECT Number_of_people FROM the_table WHERE Customer_name = p_customer_name;
BEGIN
OPEN c1;
LOOP
FETCH c1 INTO v_number_of_people;
EXIT WHEN c1%NOTFOUND;
v_result := v_result || v_number_of_people || ' ' || CHR(13);
END;
END;
To run it, use:
SELECT number_of_people(1) INTO dual;
Hope this helps, and please let me know if there are any errors, I didn't testrun the function myself.
Just do
select Number_of_people
from table
where Customer_name = 1
Are we missing some detail?