ORACLE ºÁÃëת»»ÎªÈÕÆÚ ÈÕÆÚת»»ºÁÃë
--ÈÕÆÚת»»ºÁÃë
SELECT TO_NUMBER(TO_DATE('2005-03-29 12:30:45', 'YYYY-MM-DD HH24:MI:SS') -
TO_DATE('1970-01-01 8:0:0', 'YYYY-MM-DD HH24:MI:SS')) * 24 * 60 * 60 * 1000
from DUAL;
--ºÁÃëת»»ÈÕÆÚ
SELECT TO_CHAR(1112070645000 / (1000 * 60 * 60 * 24) +
TO_DATE('1970-01-01 08:00:00', 'YYYY-MM-DD HH:MI:SS'), 'YYYY-MM-DD HH:MI:SS') AS CDATE
from DUAL;
Ïà¹ØÎĵµ£º
Ò»¡¢Êý¾Ý¿â
Êý¾Ý¿â¹ËÃû˼ÒåÊÇÊý¾ÝµÄ¼¯ºÏ£¬¶øOracleÔòÊǹÜÀíÕâЩÊý¾Ý¼¯ºÏµÄÈí¼þϵͳ£¬ËüÊÇÒ»¸ö¶ÔÏó¹ØÏµÐ͵ÄÊý¾Ý¿â¹ÜÀíϵͳ¡£
¶þ¡¢±í¿Õ¼ä
±í¿Õ¼äÊÇOracle¶ÔÎïÀíÊý¾Ý¿âÉÏÏà¹ØÊý¾ÝµÄÂß¼Ó³Éä¡£Ò»¸öÊý¾Ý¿âÔÚÂß¼Éϱ»»®·Ö³ÉÒ»µ½Èô¸É¸ö±í¿Õ¼ä£¬Ã¿¸ö±í¿Õ¼ä°üº¬ÁËÔÚÂß¼ÉÏÏà¹ØÁªµÄÒ»×é½á¹¹¡£Ã¿¸öÊý¾Ý¿âÖ ......
1.×¼±¸¹¤×÷£º
°²×°32λ»ò64λRHEL5.4£¬°²×°Ïòµ¼Öв»ÐèҪѡÈκÎ×é¼þ£¬²»ÐèÒªÔ¤ÅäÖÃÈκÎÓû§£¬IPÊÇDHCP»ò¾²Ì¬½Ô¿É¡£
°²×°ºóÅäÖöîÍâ×é¼þ£º
yum -y install libXp,make,binutils,gcc,kernel-headers,glibc-headers,glibc-devel,libgomp
ÔÚx86_64ÉÏ»¹ÐèÒªcompat-libstdc++-33.x86_64
¶Ôx86£¬ÉÏ´«²¢½âѹ10201_database_lin ......
UpSert¹¦ÄÜ£º
MERGE <hint> INTO <table_name>
USING <table_view_or_query>
ON (<condition>)
WHEN MATCHED THEN <update_clause>
WHEN NOT MATCHED THEN <insert_clause>;
MultiTable Inserts¹¦ÄÜ£º
Multitable inserts allow a single INSERT INTO .. SELECT statement to ......
×Ô¼ºÕûÀíÁËÏÂOracleµÄÊý¾Ý¿â±¸·Ý·½°¸,ÓùýÀ䱸·Ý¡£ÆäËûûÓвâÊÔ¹ý
Ò»¡¢ µ¼³ö/µ¼Èë(Export/Import)
¡¡¡¡ÀûÓÃExport¿É½«Êý¾Ý´ÓÊý¾Ý¿â
ÖÐÌáÈ¡³öÀ´£¬ÀûÓÃImportÔò¿É½«ÌáÈ¡³öÀ´µÄÊý¾ÝËͻص½Oracle
Êý¾Ý¿âÖÐÈ¥¡£
¡¡¡¡1¡¢ ¼òµ¥µ¼³öÊý¾Ý(Export)ºÍµ¼ÈëÊý¾Ý(Import):
¡¡¡¡OracleÖ§³ÖÈýÖÖ·½Ê½ÀàÐ͵ÄÊä³ö£º
¡¡¡¡(1)¡¢±í·½Ê½(T·½ ......