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Oracle·ÖÎö±íºÍË÷Òý(analyze)

analyze table tablename compute statistics;
analyze index indexname compute statistics;
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OracleµÄonline documentÕâÑùÃèÊöanalyzeµÄ×÷Óãº
Use the ANALYZE statement to collect non-optimizer statistics, for example, to:
1¡¢Collect or delete statistics about an index or index partition, table or table partition, index-organized table, cluster, or scalar object attribute.
2¡¢Validate the structure of an index or index partition, table or table partition, index-organized table, cluster, or object reference (REF).
3¡¢Identify migrated and chained rows of a table or cluster.
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oracle ´æ´¢¹ý³ÌµÄ»ù±¾Óï·¨ ¼°×¢ÒâÊÂÏî

1.»ù±¾½á¹¹
CREATE OR REPLACE PROCEDURE ´æ´¢¹ý³ÌÃû×Ö
(
    ²ÎÊý1 IN NUMBER,
    ²ÎÊý2 IN NUMBER
) IS
±äÁ¿1 INTEGER :=0;
±äÁ¿2 DATE;
BEGIN
END ´æ´¢¹ý³ÌÃû×Ö
2.SELECT INTO STATEMENT
  ½«select²éѯµÄ½á¹û´æÈëµ½±äÁ¿ÖУ¬¿ÉÒÔͬʱ½«¶à¸öÁд洢¶à¸ö±äÁ¿ÖУ¬±ØÐëÓÐÒ»Ì ......

OracleÖеÄnull

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select *
from    tablename
where col is null;
²éѯijÁÐÖµ²»ÎªnullµÄ¼Ç¼£º
select *
from   tablename
where col is not null;
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 set ORACLE_SID = ORCL;Ϊ
set LOCLA=service name;
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oracleÔËÐÐÃüÁî´óÈ«

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net use \\ip\ipc$ "ÃÜÂë" /user:"Óû§Ãû" ½¨Á¢IPC·Ç¿ÕÁ´½Ó
net use h: \\ip\c$ "ÃÜÂë" /user:"Óû§Ãû" Ö±½ÓµÇ½ºóÓ³Éä¶Ô·½C£ºµ½±¾µØÎªH:
net use h: \\ip\c$ µÇ½ºóÓ³Éä¶Ô·½C£ºµ½±¾µØÎªH:
net use \\ip\ipc$ /del ɾ³ýIPCÁ´½Ó
net use h: /del ɾ³ýÓ³Éä¶Ô·½µ½±¾µ ......
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