ORACLE LOB×ֶΠ²»ÄÜÓÃunion ²éѯ
lob×ֶβ»ÄÜ×ögroup by£¬¶øunionÖÐÐèҪʹÓÃgroup by¹ýÂ˵ôÖظ´¼Í¼£¬ËùÒÔ²»ÐÐ ¡£ ÓÃunion all¾Í¿ÉÒÔÁË¡£
Áí£ºunion ºÍ union allÇø±ð£º
UNIONÔÚ½øÐбíÁ´½Óºó»áɸѡµôÖظ´µÄ¼Ç¼£¬ËùÒÔÔÚ±íÁ´½Óºó»á¶ÔËù²úÉúµÄ½á¹û¼¯½øÐÐÅÅÐòÔËË㣬ɾ³ýÖظ´µÄ¼Ç¼ÔÙ·µ»Ø½á¹û¡£UNIONÔÚ½øÐбíÁ´½Óºó»áɸѡµôÖظ´µÄ¼Ç¼£¬ËùÒÔÔÚ±íÁ´½Óºó»á¶ÔËù²úÉúµÄ½á¹û¼¯½øÐÐÅÅÐòÔËË㣬ɾ³ýÖظ´µÄ¼Ç¼ÔÙ·µ»Ø½á¹û¡£UNIONÔÚ½øÐбíÁ´½Óºó»áɸѡµôÖظ´µÄ¼Ç¼£¬ËùÒÔÔÚ±íÁ´½Óºó»á¶ÔËù²úÉúµÄ½á¹û¼¯½øÐÐÅÅÐòÔËË㣬ɾ³ýÖظ´µÄ¼Ç¼ÔÙ·µ»Ø½á¹û¡£
¶øUNION ALLÖ»ÊǼòµ¥µÄ½«Á½¸ö½á¹ûºÏ²¢ºó¾Í·µ»Ø¡£ÕâÑù£¬Èç¹û·µ»ØµÄÁ½¸ö½á¹û¼¯ÖÐÓÐÖظ´µÄÊý¾Ý£¬ÄÇô·µ»ØµÄ½á¹û¼¯¾Í»á°üº¬Öظ´µÄÊý¾ÝÁË¡£
Ïà¹ØÎĵµ£º
1¡¢À䱸·Ý±ØÐ뽫Êý¾Ý¿â·þÎñÆ÷Í£Ö¹£¬²»È»»Ö¸´µÄʱºòÎÞ·¨»Ö¸´
Í£Ö¹·þÎñÆ÷µÄÃüÁ
ÔÚsqlplusϵǽsqlplus£ºsqlplus "/as sysdba"
Í£Ö¹oracle·þÎñ£º shutdown immediate;£¨´ËÃüÁîµÈ´ýÊÂÎñÖ´ÐÐÍê±ÏºóÔٹرգ©
ÊÇÔÚ²»ÐÐÖ±½ÓÇ¿ÐÐÖÕÖ¹:shutdown abort;£¨´ËÃüÁîÖ±½Ó¹Ø±ÕʵÀý·þÎñ£©
¹Ø±Õlistener£º
linuxÃüÁlsnrctl
È»ºóÍ ......
²é¿´±íµÄ´óС£»
select a.blocks,a.bytes,a.bytes/1024/1024 from user_segments a
where a.segment_name='B_M_DZYH_CUST_SIGN_FACT';
Ê×ÏÈ
create table TEST_1228 as select * from user_tables;
insert into TEST_1228 select * from TEST_1228 ;
insert into TEST_1228 select * from TEST_1228 ;
i ......
1¡¢´ÓrootÓû§Çл»µ½oracleÓû§
#su - oracle
2¡¢ÀûÓÃnologÑ¡ÏîÆô¶¯sql*plus¹¤¾ß³ÌÐò
$slqplus /nolog
3¡¢ÀûÓÃsysdbaÉí·ÝÆô¶¯oracleÊý¾Ý¿â
sql>connect / as sysdba
sql>startup
4¡¢Æô¶¯Êý¾Ý¿âµÄ¼àÌýÆ÷listener
$lsnrctl start
»ò
$lsnrctl
lsnrctl>start
5¡¢¹Ø±ÕoracleÊý¾Ý¿â¼àÌý
$lsnrctl stop
6¡ ......
OracleÊý¾Ý¿âÓαêʹÓ÷½·¨
2009-12-30 15:27
SQLÊÇÓÃÓÚ·ÃÎÊOracleÊý¾Ý¿âµÄÓïÑÔ£¬PL/SQLÀ©Õ¹ºÍ¼ÓÇ¿ÁËSQLµÄ¹¦ÄÜ£¬ËüͬʱÒýÈëÁ˸üÇ¿µÄ³ÌÐòÂß¼, ÏÂÃæÔÚ±¾ÎÄÖн«¶ÔÓαêµÄʹÓýøÐÐһϽ²½â,Ï£Íû¿ÉÒԺʹó¼Ò¹²Í¬Ñ§Ï°½ø²½¡£
¡¡¡¡Óαê×ÖÃæÀí½â¾ÍÊÇÓζ¯µÄ¹â±ê¡£ÓαêÊÇSQLµÄÒ»¸öÄڴ湤×÷Çø£¬ÓÉϵͳ»òÓû§ÒÔ±äÁ¿µÄÐÎ ......