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  • 数据库知识

    拷贝表 
    create table  table_name   as   select   *   from   Source_table   where   1=1;

    复制表结构 
    create table  table_name   as   select   *   from   Source_table   where   1 <> 1;

    Oracle 序列:

    CREATE SEQUENCE example_sequence

    INCREMENT BY 1 -- 每次加几个

    START WITH 1 -- 从1开始计数

    NOMAXVALUE -- 不设置最大值

    NOCYCLE -- 一直累加,不循环

    NOCACHE -- 不建缓冲区;

    触发器:

    再创建一个触发器:

    CREATE TRIGGER example_triger BEFORE

    INSERT ON example FOR EACH ROW WHEN (new.id is null)--只有在id为空时,启动该触发器生成id号

    begin

    select example_sequence.nextval into: new.id from dual;

    end;

    复杂的触发器:

    if inserting then
        insert into CC02_ZJ (
    a_rid,
    b_rid,
    cdc001,
    bdc001,
    aac001,
    aac009,
    cdc004,
    cdc299,
    cab001,
    cdc002,
    cdc003,
    cdc006,
    ajc093,
    cdc005,
    acc740,
    aca112,
    bdc010,
    aae030,
    aae031,
    hba201,
    cdc007,
    cdc009,
    cdc010,
    cdc012,
    cdc013,
    cdc159,
    cdc194,
    cdc294,
    cdc198,
    cdc047,
    cdc048,
    acc0k6,
    cdc014,
    acc0k2,
    aae013,
    aae019,
    cdc356,
    cdc355,
    cdc015,
    aae011,
    aae017,
    cdc045,
    aae043,
    aae012,
    aae018,
    cdc016,
    cdc700,
    acc02d,
    cdc065,
    bcc020,
    cdc017,
    aaf017,
    aab301,
    aaf013,
    aaf030,
    aaz002,
    cdc288,
    seqlogid,
    cdc018,
    acc0k3,
    aae014,
    aae020,
    cdc030,
    cdc901,
    cdc902,
    cdc903,
    cca011,
    acc020,
    aae999,
    cdc160,
    zone1,
    aae100,
    aac999,
    aac998,
    cdc260,
    cdc601,
    cdc602,
    cdc603,
    cdc604,
    cdc605,
    cdc606,
    cdc607,
    cdc608,
    cdc609,
    cdc610,
    cdc611,
    cdc612,
    cdc613,
    cdc614,
    s_state
      ) values(
    :NEW.a_rid,:NEW.b_rid,:NEW.cdc001,:NEW.bdc001,:NEW.aac001,:NEW.aac009,:NEW.cdc004,:NEW.cdc299,:NEW.cab001,:NEW.cdc002,:NEW.cdc003,:NEW.cdc006,:NEW.ajc093,:NEW.cdc005,:NEW.acc740,:NEW.aca112,:NEW.bdc010,:NEW.aae030,:NEW.aae031,:NEW.hba201,:NEW.cdc007,:NEW.cdc009,:NEW.cdc010,:NEW.cdc012,:NEW.cdc013,:NEW.cdc159,:NEW.cdc194,:NEW.cdc294,:NEW.cdc198,:NEW.cdc047,:NEW.cdc048,:NEW.acc0k6,:NEW.cdc014,:NEW.acc0k2,:NEW.aae013,:NEW.aae019,:NEW.cdc356,:NEW.cdc355,:NEW.cdc015,:NEW.aae011,:NEW.aae017,:NEW.cdc045,:NEW.aae043,:NEW.aae012,:NEW.aae018,:NEW.cdc016,:NEW.cdc700,:NEW.acc02d,:NEW.cdc065,:NEW.bcc020,:NEW.cdc017,:NEW.aaf017,:NEW.aab301,:NEW.aaf013,:NEW.aaf030,:NEW.aaz002,:NEW.cdc288,:NEW.seqlogid,:NEW.cdc018,:NEW.acc0k3,:NEW.aae014,:NEW.aae020,:NEW.cdc030,:NEW.cdc901,:NEW.cdc902,:NEW.cdc903,:NEW.cca011,:NEW.acc020,:NEW.aae999,:NEW.cdc160,:NEW.zone1,:NEW.aae100,:NEW.aac999,:NEW.aac998,:NEW.cdc260,:NEW.cdc601,:NEW.cdc602,:NEW.cdc603,:NEW.cdc604,:NEW.cdc605,:NEW.cdc606,:NEW.cdc607,:NEW.cdc608,:NEW.cdc609,:NEW.cdc610,:NEW.cdc611,:NEW.cdc612,:NEW.cdc613,:NEW.cdc614
    , 'I');
        elsif updating then
    
         select  count(*) into sourceUserTpCount from CC02_ZJ where A_RID=:OLD.A_RID;
         if sourceUserTpCount >0  then
    
          update CC02_ZJ set
     a_rid=:NEW.a_rid,b_rid=:NEW.b_rid,cdc001=:NEW.cdc001,bdc001=:NEW.bdc001,aac001=:NEW.aac001,aac009=:NEW.aac009,cdc004=:NEW.cdc004,cdc299=:NEW.cdc299,cab001=:NEW.cab001,
     cdc002=:NEW.cdc002,cdc003=:NEW.cdc003,cdc006=:NEW.cdc006,ajc093=:NEW.ajc093,cdc005=:NEW.cdc005,acc740=:NEW.acc740,aca112=:NEW.aca112,bdc010=:NEW.bdc010,aae030=:NEW.aae030,
     aae031=:NEW.aae031,hba201=:NEW.hba201,cdc007=:NEW.cdc007,cdc009=:NEW.cdc009,cdc010=:NEW.cdc010,cdc012=:NEW.cdc012,cdc013=:NEW.cdc013,cdc159=:NEW.cdc159,cdc194=:NEW.cdc194,
     cdc294=:NEW.cdc294,cdc198=:NEW.cdc198,cdc047=:NEW.cdc047,cdc048=:NEW.cdc048,acc0k6=:NEW.acc0k6,cdc014=:NEW.cdc014,acc0k2=:NEW.acc0k2,aae013=:NEW.aae013,aae019=:NEW.aae019,
     cdc356=:NEW.cdc356,cdc355=:NEW.cdc355,cdc015=:NEW.cdc015,aae011=:NEW.aae011,aae017=:NEW.aae017,cdc045=:NEW.cdc045,aae043=:NEW.aae043,aae012=:NEW.aae012,aae018=:NEW.aae018,
     cdc016=:NEW.cdc016,cdc700=:NEW.cdc700,acc02d=:NEW.acc02d,cdc065=:NEW.cdc065,bcc020=:NEW.bcc020,cdc017=:NEW.cdc017,aaf017=:NEW.aaf017,aab301=:NEW.aab301,aaf013=:NEW.aaf013,
     aaf030=:NEW.aaf030,aaz002=:NEW.aaz002,cdc288=:NEW.cdc288,seqlogid=:NEW.seqlogid,cdc018=:NEW.cdc018,acc0k3=:NEW.acc0k3,aae014=:NEW.aae014,aae020=:NEW.aae020,cdc030=:NEW.cdc030,
     cdc901=:NEW.cdc901,cdc902=:NEW.cdc902,cdc903=:NEW.cdc903,cca011=:NEW.cca011,acc020=:NEW.acc020,aae999=:NEW.aae999,cdc160=:NEW.cdc160,zone1=:NEW.zone1,aae100=:NEW.aae100,
     aac999=:NEW.aac999,aac998=:NEW.aac998,cdc260=:NEW.cdc260,cdc601=:NEW.cdc601,cdc602=:NEW.cdc602,cdc603=:NEW.cdc603,cdc604=:NEW.cdc604,cdc605=:NEW.cdc605,cdc606=:NEW.cdc606,
     cdc607=:NEW.cdc607,cdc608=:NEW.cdc608,cdc609=:NEW.cdc609,cdc610=:NEW.cdc610,cdc611=:NEW.cdc611,cdc612=:NEW.cdc612,cdc613=:NEW.cdc613,cdc614=:NEW.cdc614,s_state='U'
          where A_RID=:OLD.A_RID;
    
            else
    
           insert into CC02_ZJ (
     a_rid,
    b_rid,
    cdc001,
    bdc001,
    aac001,
    aac009,
    cdc004,
    cdc299,
    cab001,
    cdc002,
    cdc003,
    cdc006,
    ajc093,
    cdc005,
    acc740,
    aca112,
    bdc010,
    aae030,
    aae031,
    hba201,
    cdc007,
    cdc009,
    cdc010,
    cdc012,
    cdc013,
    cdc159,
    cdc194,
    cdc294,
    cdc198,
    cdc047,
    cdc048,
    acc0k6,
    cdc014,
    acc0k2,
    aae013,
    aae019,
    cdc356,
    cdc355,
    cdc015,
    aae011,
    aae017,
    cdc045,
    aae043,
    aae012,
    aae018,
    cdc016,
    cdc700,
    acc02d,
    cdc065,
    bcc020,
    cdc017,
    aaf017,
    aab301,
    aaf013,
    aaf030,
    aaz002,
    cdc288,
    seqlogid,
    cdc018,
    acc0k3,
    aae014,
    aae020,
    cdc030,
    cdc901,
    cdc902,
    cdc903,
    cca011,
    acc020,
    aae999,
    cdc160,
    zone1,
    aae100,
    aac999,
    aac998,
    cdc260,
    cdc601,
    cdc602,
    cdc603,
    cdc604,
    cdc605,
    cdc606,
    cdc607,
    cdc608,
    cdc609,
    cdc610,
    cdc611,
    cdc612,
    cdc613,
    cdc614,
    s_state
      ) values(
    :NEW.a_rid,:NEW.b_rid,:NEW.cdc001,:NEW.bdc001,:NEW.aac001,:NEW.aac009,:NEW.cdc004,:NEW.cdc299,:NEW.cab001,:NEW.cdc002,:NEW.cdc003,:NEW.cdc006,:NEW.ajc093,:NEW.cdc005,:NEW.acc740,:NEW.aca112,:NEW.bdc010,:NEW.aae030,:NEW.aae031,:NEW.hba201,:NEW.cdc007,:NEW.cdc009,:NEW.cdc010,:NEW.cdc012,:NEW.cdc013,:NEW.cdc159,:NEW.cdc194,:NEW.cdc294,:NEW.cdc198,:NEW.cdc047,:NEW.cdc048,:NEW.acc0k6,:NEW.cdc014,:NEW.acc0k2,:NEW.aae013,:NEW.aae019,:NEW.cdc356,:NEW.cdc355,:NEW.cdc015,:NEW.aae011,:NEW.aae017,:NEW.cdc045,:NEW.aae043,:NEW.aae012,:NEW.aae018,:NEW.cdc016,:NEW.cdc700,:NEW.acc02d,:NEW.cdc065,:NEW.bcc020,:NEW.cdc017,:NEW.aaf017,:NEW.aab301,:NEW.aaf013,:NEW.aaf030,:NEW.aaz002,:NEW.cdc288,:NEW.seqlogid,:NEW.cdc018,:NEW.acc0k3,:NEW.aae014,:NEW.aae020,:NEW.cdc030,:NEW.cdc901,:NEW.cdc902,:NEW.cdc903,:NEW.cca011,:NEW.acc020,:NEW.aae999,:NEW.cdc160,:NEW.zone1,:NEW.aae100,:NEW.aac999,:NEW.aac998,:NEW.cdc260,:NEW.cdc601,:NEW.cdc602,:NEW.cdc603,:NEW.cdc604,:NEW.cdc605,:NEW.cdc606,:NEW.cdc607,:NEW.cdc608,:NEW.cdc609,:NEW.cdc610,:NEW.cdc611,:NEW.cdc612,:NEW.cdc613,:NEW.cdc614
    , 'U');
    
    end if;
    
         elsif deleting then
         update  CC02_ZJ set s_state='D' where A_RID=:OLD.A_RID;
    
         end if;
    
    
    end;
    

      

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  • 原文地址:https://www.cnblogs.com/xiaohu1218/p/11032055.html
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