69 lines
1.5 KiB
Markdown
69 lines
1.5 KiB
Markdown
# P5 - PL-SQL Block
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**Problem Statement:** Write a PL/SQL Block to increase the salary of employees by 10% of existing salary, who are having salary less than average salary of organization, whenever such salary updates take place, a record for same is maintained in the increment_salary table.
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emp(emp_no, salary)
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increment_salary(emp_no, salary)
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---
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## Creating tables:
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```sql
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CREATE TABLE emp(
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emp_no NUMBER(14),
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salary NUMBER(14)
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);
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CREATE table increment_salary(
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emp_no NUMBER(14),
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salary NUMBER(14)
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);
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```
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## Inserting values:
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```sql
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INSERT INTO emp VALUES (1, 1000);
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INSERT INTO emp VALUES (2, 8000);
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INSERT INTO emp VALUES (3, 2000);
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INSERT INTO emp VALUES (4, 5000);
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INSERT INTO emp VALUES (5, 7000);
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```
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## Procedure
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```sql
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DECLARE
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avg_salary NUMBER(14, 4);
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BEGIN
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SELECT AVG(salary) INTO avg_salary FROM emp;
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FOR emp_record IN (select emp_no, salary FROM emp WHERE salary < avg_salary)
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LOOP
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insert into increment_salary(emp_no, salary) values (emp_record.emp_no, emp_record.salary);
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UPDATE emp SET salary = emp_record.salary * 1.10 WHERE emp_no = emp_record.emp_no;
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END LOOP;
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EXCEPTION
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WHEN OTHERS THEN
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DBMS_OUTPUT.PUT_LINE('Error: ' || SQLERRM);
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end;
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/
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```
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<details>
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<summary><strong>OUTPUT</strong>: After PL/SQL Block:</summary>
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emp:<br>
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EMP_NO SALARY<br>
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1 1100<br>
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2 8000<br>
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3 2200<br>
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4 5000<br>
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5 7000<br>
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<br>
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increment_emp:<br>
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EMP_NO SALARY<br>
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1 1000<br>
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3 2000<br>
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</details>
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---
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