PL/SQL中SQL操作
- sql%rowcount属性:实际在sql操作过程中开起了隐式游标,表示最近执行的sql语句影响的行数
declare
vCount number;
vDeptno dept2.deptno%type := 10;
begin
--select count(*) into vCount from dept2;
--update dept2 set dname = dname || '~.~' where deptno = vDeptno;
--delete from dept2 where deptno = 40;
insert into dept2 select * from dept;
dbms_output.put_line('count:' || vCount);
dbms_output.put_line(sql%rowcount || '行受影响');
end;
PL/SQL执行静态sql语句
begin
execute immediate 'create table temp as select * from dept';
end;
动态sql(变量占位符)
declare
sqlstr varchar2(100);
begin
sqlstr := 'insert into scott.dept values(12, :1, :abc)';
--变量是按照占位符顺序插入的
execute immediate sqlstr using '教务部', '武汉';
end;
select * from scott.dept;
动态sql(把查询结果赋值给变量)
declare
dept_row_data scott.dept%rowtype;
sqlstr varchar2(100);
begin
sqlstr := 'select * from scott.dept where deptno = 11';
execute immediate sqlstr into dept_row_data;
dbms_output.put_line(dept_row_data.deptno);
end;
判断循环
if 语句
declare
vSal emp.sal%type;
begin
select sal into vSal from emp where empno = 7566;
if (vSal < 1200) then
dbms_output.put_line('小于1200');
elsif (vSal < 2000) then
dbms_output.put_line('小于2000');
else
dbms_output.put_line('大于2000');
end if;
end;
loop循环
declare
i binary_integer := 10;
begin
loop
dbms_output.put_line(i);
i := i - 1;
exit when(i < 1);
end loop;
end;
while循环
declare
i binary_integer := 1;
begin
while i < 11 loop
dbms_output.put_line(i);
i := i + 1;
end loop;
end;
for 循环
begin
for i in 1..10 loop
dbms_output.put_line(i);
end loop;
for i in reverse 1..10 loop
dbms_output.put_line(i);
end loop;
end;
参考
http://www.cnblogs.com/hoojo/archive/2011/05/03/2035357.html