Select the number of employees into the l_emp_count variable : Select Into « PL SQL « Oracle PL / SQL

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Oracle PL / SQL » PL SQL » Select Into 
Select the number of employees into the l_emp_count variable
 
SQL>
SQL> CREATE TABLE lecturer (
  2    id               NUMBER(5PRIMARY KEY,
  3    first_name       VARCHAR2(20),
  4    last_name        VARCHAR2(20),
  5    major            VARCHAR2(30),
  6    current_credits  NUMBER(3)
  7    );

Table created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10001'Scott', 'Lawson','Computer Science', 11);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major, current_credits)
  2                VALUES (10002'Mar', 'Wells','History', 4);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10003'Jone', 'Bliss','Computer Science', 8);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10004'Man', 'Kyte','Economics', 8);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10005'Pat', 'Poll','History', 4);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10006'Tim', 'Viper','History', 4);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10007'Barbara', 'Blues','Economics', 7);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10008'David', 'Large','Music', 4);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10009'Chris', 'Elegant','Nutrition', 8);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10010'Rose', 'Bond','Music', 7);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10011'Rita', 'Johnson','Nutrition', 8);

row created.

SQL>
SQL> INSERT INTO lecturer (id, first_name, last_name, major,current_credits)
  2                VALUES (10012'Sharon', 'Clear','Computer Science', 3);

row created.

SQL>
SQL>
SQL>  declare
  2       l_emp_count number;
  3       i number; -- We will use this as our counter
  4   begin
  5       select count(*into l_emp_count from lecturer;
  6
  7       FOR i IN .. l_emp_count LOOP
  8       dbms_output.put_line('Employee ' || i);
  9   END LOOP;
 10  end;
 11  /
Employee 1
Employee 2
Employee 3
Employee 4
Employee 5
Employee 6
Employee 7
Employee 8
Employee 9
Employee 10
Employee 11
Employee 12

PL/SQL procedure successfully completed.

SQL>
SQL>
SQL> drop table lecturer;

Table dropped.

 
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3. Catch too_many_rows Exception for 'Select into' statement
4. Multiple-Row SELECT Command with Several Exception-Handling Routines
5. Select count result into a variable
6. Output variable after 'select into'
7. SELECT into value pair
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