Oracle数据库的游标Cursor和存储过程 PL/SQL
Oracle数据库的游标Cursor和存储过程 PL/SQL
Oracle数据库的游标和存储过程
spool abc.log --开始记录日志
create or replace procedure db.PROC_FIRST(FLAG OUT INTERGER,
T_DATE IN VARCHAR2)
AS
varno varchar2(20);
varprice varchar2(20);
CURSOR mycur(vartype number) is
select emp_no,emp_zc from cus_emp_basic
where com_no = vartype;
BEGIN
if NOT mycur%ISOPEN then
open mycur(043925);
end if;
FETCH mycur INTO varno,varprice;
WHILE mycur%FOUND
LOOP
dbms_output.put_line(varno||','||varprice);
if mycur%rowcount=2 then
EXIT;
end if;
fetch mycur into varno,varprice;
END LOOP;
CLOSE mycur;
EXCEPTION WHEN OTHERS THEN
ROLLBACK;
end;
spool off
记录并不保存在数据库中,它与变量一样,保存在内存空间中,在使用记录时候,要首先定义记录结构,,然后声明记录变量。可以把PL/SQL记录看作是一个用户自定义的数据类型。
EXECUTE IMMEDIATE sqlstr;
它解析并马上执行动态的SQL语句或非运行时创建的PL/SQL块.动态创建和执行SQL语句性能超前
PL/SQL的系统变量及CURSOR:
游标属性:
%ISOPEN
%FOUND
%NOTFOUND
%ROWCOUNT
异常:
SQLCODE() 错误号
SQLERRM() 错误信息
NO_DATA_FOUND

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