Execute immediate simple sample set (DML)

With uncertain parameters DML

• increase

-- To write pl/sql The program block implements the insertion of user input data dept surface 
declare
	v_deptno dept.deptno%type:=& Please enter the department number ;
	v_dname dept.dname%type:='& Please enter the Department name ';
	v_loc dept.loc%type:='& Please enter the Department Address ';
begin
	execute immediate 'insert into dept values(:a,:b,:c)'  using v_deptno,v_dname,v_loc;	
end;

• Delete

-- To write pl/sql The block implementation will dept The data corresponding to the department number entered by the user in the table is deleted 
declare
	c number:=& Please enter the department number to delete the information ;
begin
	execute immediate 'delete from dept where deptno=:a' using c;
end;

• Change

-- Write a pl/sql The code block implements setting the employee's salary to 1000
declare
	v_empno emp.empno%type:=& Please enter the employee number ;
begin
	execute immediate 'update emp set sal=1000 where empno=:a' using v_empno;
end;

• check

-- Write a pl/sql The code block realizes querying the number of people in the table according to the table name entered by the user , And print 
Declare
    a NUMBER;
    v_table varchar2(20):='& Please enter a table name ';
    v_sql Varchar2(100);
BEGIN
    v_sql:='select count(*) from '||v_table;
    Execute Immediate v_sql  INTO a;
    dbms_output.put_line(v_table||'--------'||a);
END;