Oracle Óαê×ܽá+ÕûÀí
ÏîÄ¿ÖÐÐèҪʹÓõ½°´¹æÔòÉú³ÉÐòÁкţ¬¿ªÊ¼µÄ½â¾ö°ì·¨ÊǸù¾ÝÌõ¼þÈ¡µÃ×î´óIDºÅ½øÐзֽâ+1Ôٺϲ¢µÄ½â¾ö·½°¸£¬ºóÀ´·¢ÏÖÈç¹ûÁ½¸ö¿Í»§Í¬Ê±²Ù×÷µÄʱºò³öÏÖÎÊÌ⣺Ìí¼ÓµÄʱºòIDÒѾ´æÔÚ£¬ÔÒòÊÇ£ºAÓû§ÔÚ·ÃÎÊÈ¡µÃµÚMAX(N)¼Ç¼deID£¬µ«ÊÇ»¹Ã»ÓнøÐÐÔö¼Ó²Ù×÷£¬Õâʱ£¬BÓû§Ò²È¡µÃµÚMAX(N)¼Ç¼deID£¬ÕâÊÇ£Á½øÐÐÌí¼Ó²Ù×÷ͬʱ£¬£ÂҲͬʱ½øÐÐÌí¼Ó²Ù×÷£¬ÄÇô£ÂÓû§¾Í»á±£´æʧ°Ü£¬ÎÒÃÇ¿ªÊ¼µÄʱºò²ÉÓõĽâ¾ö·½°¸ÊÇ£º£¨¼ÏËø£©ÔÚ³ÌÐòµÄ·½·¨ÉϼÏËø£¬²ÉÓõ¥Ï̲߳Ù×÷£¬ÊµÊ©½á¹û£ºÊ§°Ü£¬¿Í»§µÈ´ýʱ¼ä³¤£¬ºóÀ´ÎÒÃDzÉÓðó¶¨Êý¾Ý¿âµÄ·½°¸£º±àд´æ´¢¹ý³Ì£¬ËäÈ»°ó¶¨²»Ôõô·½±ã£¬µ«ÊÇÖ´ÐÐЧÂÊÒª¿ìºÜ¶à¡£ÓÉÓÚʱ¼äÎÊÌ⣬ûÓÐ×öÐòÁÐ×Ô¶¯´´½¨¹¦ÄÜ£¬»¶Ó¸÷λ´óϺ½øÐÐÖ¸µãºÍÆÀÂÛ£¬ÎÒÃÇ×îºóµÄ·½°¸ÈçÏ£º
ÔÚoracleÀïÃæ±àдÁË2¸ö»ù±¾×ö»ù±¾´¦ÀíµÄ×Ô¶¨Ò庯Êý£º
create or replace function fun_config_glide_num(p_class varchar2,
p_column varchar2)
/**
* Á÷Ë®ÕʺÅÅäÖÃ_oracle
* author:ai bo 2010.02.23
* p_table varchar2 ±íÃû
* p_website varchar2 ×Ô¶¨Ò忪ͷ×Ö·û
*/
return varchar2 as
v_curId integer;
-- v_seq varchar2(50);
-- v_seq_value number;
v_sql varchar2(200);
v_ret number(3);
v_num varchar2(20);
p_table varchar2(30);
p_website varchar2(20);
p_length varchar2(3);
t_class varchar2(20);
t_column varchar2(20);
begin
t_class := p_cla
Ïà¹ØÎĵµ£º
¶ÔÓÚ Oracle µÄ rownum ÎÊÌ⣬ºÜ¶à×ÊÁ϶¼Ëµ²»Ö§³Ö>,>=,=,between...and£¬Ö»ÄÜÓÃÒÔÉÏ·ûºÅ(<¡¢<=¡¢!=)£¬²¢·Ç˵ÓÃ>,>=,=,between..and ʱ»áÌáʾSQLÓï·¨´íÎ󣬶øÊǾ³£ÊDz鲻³öÒ»Ìõ¼Ç¼À´£¬»¹»á³öÏÖËƺõÊÇĪÃûÆäÃîµÄ½á¹ûÀ´£¬ÆäʵÄúÖ»ÒªÀí½âºÃÁËÕâ¸ö rownum αÁеÄÒâÒå¾Í²»Ó¦¸Ã¸Ðµ½¾ªÆ棬ͬÑùÊÇαÁУ¬r ......
Ò»¡¢Ç¶Ì×±íµÄ¶¨Ò壺
ǶÌ×±íÊDZíÖÐÖ®±í¡£Ò»¸öǶÌ×±íÊÇijЩÐеļ¯ºÏ£¬ËüÔÚÖ÷±íÖбíʾΪÆäÖеÄÒ»ÁС£¶ÔÖ÷±íÖеÄÿһÌõ¼Ç¼£¬Ç¶Ì×±í¿ÉÒÔ°üº¬¶à¸öÐС£ÔÚijÖÖÒâÒåÉÏ£¬ËüÊÇÔÚÒ»¸ö±íÖд洢һ¶Ô¶à¹ØϵµÄÒ»ÖÖ·½·¨¡£¿¼²éÒ»¸ö°üº¬²¿ÃÅÐÅÏ¢µÄ±í£¬ÔÚÈκÎʱ¼äÄÚÿ¸ö²¿ÃÅ»áÓкܶàÏîÄ¿ÕýÔÚʵʩ¡£ÔÚÒ»¸öÑϸñµÄ¹ØϵģÐÍÖУ ......
Ê×ÏȲéÕÒÄ¿±êÓû§µÄµ±Ç°½ø³Ì£º
select sid,serial# from v$session where username='ERP';
²éѯ½á¹û£º
sid serial#
222 123
122 233
Ç¿ÐжϿªÓû§Á¬½Ó£º
alter system kill session 'sid,serial';
ÀýÈ磺
alter system kill session '222,123';
......
decodeº¯Êý
Óï·¨£º
decode(expr,search,result[,search,result]..[,search,result][,default])
½âÊÍ£º
±È½ÏexprÓëÿ¸ösearchµÄÖµ£¬Èç¹ûexprµÈÓÚij¸ösearch£¬Ôò·µ»ØÏàÓ¦µÄresult£»Èç¹ûûÓÐÆ¥ÅäµÄÖµ£¬Ôò·µ»ØdefaultÖµ£»Èç¹ûûÓÐÖ¸¶¨defaultÖµ£¬Ôò·µ»Ønull
×¢Ò⣺
±È½ÏÇ°£¬Oracle×Ô¶¯½«exprµÄÊý¾ÝÀàÐÍת»»³ÉµÚÒ»¸ösear ......
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 ......