Oracle¼ÆËãʱ¼ä²î±í´ïʽ
--»ñÈ¡Á½Ê±¼äµÄÏà²îºÀÃëÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')) * 24 * 60 * 60 * 1000) Ïà²îºÀÃëÊý from DUAL;
/*
Ïà²îºÀÃëÊý
----------
86401000
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²îÃëÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')) * 24 * 60 * 60) Ïà²îÃëÊý from DUAL;
/*
Ïà²îÃëÊý
----------
86401
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²î·ÖÖÓÊý
select ceil(((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss'))) * 24 * 60) Ïà²î·ÖÖÓÊý from DUAL;
/*
Ïà²î·ÖÖÓÊý
----------
1441
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²îСʱÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss')) * 24) Ïà²îСʱÊý from DUAL;
/*
Ïà²îСʱÊý
----------
25
1 row selected
*/
--»ñÈ¡Á½Ê±¼äµÄÏà²îÌìÊý
select ceil((To_date('2008-05-02 00:00:00' , 'yyyy-mm-dd hh24-mi-ss') - To_date('2008-04-30 23:59:59' , 'yyyy-mm-dd hh24-mi-ss'))) Ïà²îÌìÊý from DUAL;
/*
Ïà²îÌìÊý
----------
2
1 row selected
*/
--»ñÈ¡Á½Ê±¼äÔ·ݲî
select (EXTRACT(year from to_date('2009-05-01','yyyy-mm-dd')) - EXTRACT(year from to_date('2008-04-30','yyyy-mm-dd'))) * 12 +
EXTRACT(month from to_date('2008-05-01','yyyy-mm-dd')) - EXTRACT(month from to_date('2008-04-30','yyyy-mm-dd')) months
from dual;
/*
MONTHS
----------
13
1 row selected
*/
--»ñÈ¡Á½Ê±¼äÄê·Ý²î
select EXTRACT(year from to_date('2009-05-01','yyyy-mm-dd')) - EXTRACT(year from to_date('2008-04-30','yyyy-mm-dd')) years from dual;
/*
YEARS
----------
1
1 row select
Ïà¹ØÎĵµ£º
ÔÚPL/SQL³ÌÐòÉè¼ÆÖУ¬ÓÐÈýÖÖ¶¨Òå¼Ç¼ÀàÐ͵ķ½·¨£ºÒ»ÖÖÊÇʹÓÃ%ROWTYPEÊôÐÔ£»ÁíÒ»ÖÖÊÇÔÚPL/SQL³ÌÐòµÄÉùÃ÷²¿·ÖÏÔʾ¶¨Òå¼Ç¼ÀàÐÍ£»×îºóÒ»ÖÖ·½·¨Êǽ«¼Ç¼ÀàÐͶ¨ÒåΪÊý¾Ý¿â½á¹¹»ò¶ÔÏóÀàÐÍ¡£
ÎÒÏȼòµ¥µÄ½éÉÜÒ»¸öÏÂÃæÒªÓõ½µÄ±íµÄ½á¹¹£¨ºÚÌå±êÃ÷µÄ×Ö¶ÎΪÖ÷¼ü£©£º
INDIVIDUALS±í
INDIVIDUAL ID
FIRST NAME
MIDDLE_INITI ......
¶þ¡¢ÒÔÐβεÄÐÎʽ¶¨ÒåºÍʹÓüǼ¡¢¶ÔÏóÀàÐÍ
ÔÚÓÃ×÷ÐÎʽ²ÎÊýʱ£¬¼Ç¼ÀàÐͺͶÔÏóÀàÐÍÓкܶàÏà֮ͬ´¦¡£ÔÚ½«ËüÃÇ×÷ΪÓαꡢº¯Êý»ò¹ý³ÌµÄÐÎʽ²ÎÊýÒÔÇ°£¬ÊÂÏȶ¼±ØÐ붨ÒåÒ»¸ö¼Ç¼ÀàÐÍ»òÕ߶ÔÏóÀàÐÍ¡£
ÈçÏÂÀýËùʾ£º
¼Ç¼
DECLARE
-- Define a record type.
TYPE individual_record IS RECORD
(individual_id ......
±¾ÊÓͼ³ÖÐø¸ú×ÙËùÓÐshared poolÖеĹ²Ïícursor£¬ÔÚshared poolÖеÄÿһÌõSQLÓï¾ä¶¼¶ÔÓ¦Ò»ÁС£±¾ÊÓͼÔÚ·ÖÎöSQLÓï¾ä×ÊԴʹÓ÷½Ãæ·Ç³£ÖØÒª¡£
V$SQLAREAÖеÄÐÅÏ¢ÁÐ
HASH_VALUE£ºSQLÓï¾äµÄHashÖµ¡£
ADDRESS£ºSQLÓï¾äÔÚSGAÖеĵØÖ·¡£
ÕâÁ½Áб»ÓÃÓÚ¼ø±ðSQLÓï¾ä£¬ÓÐʱ£¬Á½Ìõ²»Í¬µÄÓï¾ä¿ÉÄÜhashÖµÏàͬ¡£Õâʱºò£¬±ØÐëÁ¬Í¬ADDRESSÒ ......