Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

½«Ò»¸öSQLÊý¾Ý¿âÖÐµÄ±íµ¼Èëµ½±ðÒ»¸öÊý¾Ý¿âÖÐ

µ¼ÈëµÄÏêϸÁ÷³Ì
1¡¢Ð½¨Ò»¸öÊý¾Ý¿â
2¡¢ÔÚеÄÊý¾Ý¿âÉϵãÓÒ¼ü-¡·“ËùÓÐÈÎÎñ”-¡·“µ¼ÈëÊý¾Ý¿â”£¬µãÏÂÒ»²½
3¡¢Ê²Ã´¶¼²»Òª¸Ä£¬ÔÚÊý¾Ý¿âÖÐÑ¡ÔñÄǸö¾ÉµÄÊý¾Ý¿â£¬µãÏÂÒ»²½
4¡¢ÔÚÕâ¸ö½çÃæµÄÊý¾Ý¿âÖÐÑ¡ÔñÄãн¨µÄÊý¾Ý¿â£¬µãÏÂÒ»²½
5¡¢Ñ¡Ôñ“ÔÚSQL SERVERÊý¾Ý¿âÖ®¼ä¸´ÖƶÔÏóºÍÊý¾Ý”£¬µãÏÂÒ»²½
6¡¢Ê²Ã´¶¼²»Òª¸Ä£¬µãÏÂÒ»²½
7¡¢Á¢¼´ÔËÐÐ
8¡¢¼ì²é½á¹û


Ïà¹ØÎĵµ£º

Sql server ʱ¼ä¶Î²éѯ µÄÏà¹Ø·Ñ½âÎÊÌâ

sql server ʱ¼ä¶Î²éѯ¡£
==========================================
select g.borrowTime  from t_apartment_goodsborrow g
where g.borrowTime >= '2010-03-11 9:50:43'
2010-03-11 9:52:54
----------------------------------------------------------------------------
select g.borrowTime  ......

PL/SQLѧϰ±Ê¼Ç¶þ


1.³£Á¿
¶¨ÒåÓï·¨¸ñʽ£º
³£Á¿Ãû constant ÀàÐͱêʶ·û [not null]:=Öµ;
È磺PI constant number(9):=3.1415;
2.»ù±¾Êý¾ÝÀàÐͱäÁ¿
»ù±¾Êý¾ÝÀàÐÍ
number  Êý×ÖÐÍ
int ÕûÊýÐÍ
pls_integer ÕûÊýÐÍ£¬²úÉúÒç³öʱ³öÏÖ´íÎó
binary_integer ÕûÊýÐÍ£¬±íʾ´ø·ûºÅµÄÕûÊý
char ¶¨³¤×Ö·ûÐÍ£¬×î´ó255¸ö×Ö·û
varchar2 ±ä³¤× ......

PL/SQLѧϰ±Ê¼ÇÎå


ÓαêÊÇ´ÓÊý¾Ý¿âÖÐÌáÈ¡³öÀ´µÄÊý¾Ý£¬ÒÔÁÙʱ±íµÄÐÎʽ´æ·ÅÔÚÄÚ´æÖУ¬ÔÚÓαêÖÐÓÐÒ»¸öÊý¾ÝÖ¸Õ룬ÔÚ³õʼ״̬ÏÂÖ¸ÏòÊ׼Ǽ£¬ ÀûÓÃfetchÓï¾äÒÆ¶¯¸ÃÖ¸Õ룬´Ó¶ø¶ÔÓαêÖеÄÊý¾Ý½øÐи÷ÖÖ²Ù×÷¡£
1.¶¨ÒåÓαê
cursor ÓαêÃû is selectÓï¾ä;
2.´ò¿ªÓαê
open ÓαêÃû;
3.ÌáÈ¡ÓαêÊý¾Ý
fetch ÓαêÃû into ±äÁ¿Ãû1, ±äÁ¿Ãû2, ....;
»ò ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ