oracle将汉字转为全拼或返回拼音首字母sql
create or replace type spell_code as object(spell varchar2(10),code number); create or replace type t_spellcode is table of spell_code; --返回拼音与代码的对应关系 create or replace function f_getSpellcode return t_spellcode Pipelined is Be
create or replace type spell_code as object(spell varchar2(10),code number);
create or replace type t_spellcode is table of spell_code;
--返回拼音与代码的对应关系
create or replace function f_getSpellcode return t_spellcode Pipelined
is
Begin
PIPE Row(spell_code('a', -20319));
PIPE Row(spell_code('ai', -20317));
PIPE Row(spell_code('an', -20304));
PIPE Row(spell_code('ang', -20295));
PIPE Row(spell_code('ao', -20292));
PIPE Row(spell_code('ba', -20283));
PIPE Row(spell_code('bai', -20265));
PIPE Row(spell_code('ban', -20257));
PIPE Row(spell_code('bang', -20242));
PIPE Row(spell_code('bao', -20230));
PIPE Row(spell_code('bei', -20051));
PIPE Row(spell_code('ben', -20036));
PIPE Row(spell_code('beng', -20032));
PIPE Row(spell_code('bi', -20026));
PIPE Row(spell_code('bian', -20002));
PIPE Row(spell_code('biao', -19990));
PIPE Row(spell_code('bie', -19986));
PIPE Row(spell_code('bin', -19982));
PIPE Row(spell_code('bing', -19976));
PIPE Row(spell_code('bo', -19805));
PIPE Row(spell_code('bu', -19784));
PIPE Row(spell_code('ca', -19775));
PIPE Row(spell_code('cai', -19774));
PIPE Row(spell_code('can', -19763));
PIPE Row(spell_code('cang', -19756));
PIPE Row(spell_code('cao', -19751));
PIPE Row(spell_code('ce', -19746));
PIPE Row(spell_code('ceng', -19741));
PIPE Row(spell_code('cha', -19739));
PIPE Row(spell_code('chai', -19728));
PIPE Row(spell_code('chan', -19725));
PIPE Row(spell_code('chang', -19715));
PIPE Row(spell_code('chao', -19540));
PIPE Row(spell_code('che', -19531));
PIPE Row(spell_code('chen', -19525));
PIPE Row(spell_code('cheng', -19515));
PIPE Row(spell_code('chi', -19500));
PIPE Row(spell_code('chong', -19484));
PIPE Row(spell_code('chou', -19479));
PIPE Row(spell_code('chu', -19467));
PIPE Row(spell_code('chuai', -19289));
PIPE Row(spell_code('chuan', -19288));
PIPE Row(spell_code('chuang', -19281));
PIPE Row(spell_code('chui', -19275));
PIPE Row(spell_code('chun', -19270));
PIPE Row(spell_code('chuo', -19263));
PIPE Row(spell_code('ci', -19261));
PIPE Row(spell_code('cong', -19249));
PIPE Row(spell_code('cou', -19243));
PIPE Row(spell_code('cu', -19242));
PIPE Row(spell_code('cuan', -19238));
PIPE Row(spell_code('cui', -19235));
PIPE Row(spell_code('cun', -19227));
PIPE Row(spell_code('cuo', -19224));
PIPE Row(spell_code('da', -19218));
PIPE Row(spell_code('dai', -19212));
PIPE Row(spell_code('dan', -19038));
PIPE Row(spell_code('dang', -19023));
PIPE Row(spell_code('dao', -19018));
PIPE Row(spell_code('de', -19006));
PIPE Row(spell_code('deng', -19003));
PIPE Row(spell_code('di', -18996));
PIPE Row(spell_code('dian', -18977));
PIPE Row(spell_code('diao', -18961));
PIPE Row(spell_code('die', -18952));
PIPE Row(spell_code('ding', -18783));
PIPE Row(spell_code('diu', -18774));
PIPE Row(spell_code('dong', -18773));
PIPE Row(spell_code('dou', -18763));
PIPE Row(spell_code('du', -18756));
PIPE Row(spell_code('duan', -18741));
PIPE Row(spell_code('dui', -18735));
PIPE Row(spell_code('dun', -18731));
PIPE Row(spell_code('duo', -18722));
PIPE Row(spell_code('e', -18710));
PIPE Row(spell_code('en', -18697));
PIPE Row(spell_code('er', -18696));
PIPE Row(spell_code('fa', -18526));
PIPE Row(spell_code('fan', -18518));
PIPE Row(spell_code('fang', -18501));
PIPE Row(spell_code('fei', -18490));
PIPE Row(spell_code('fen', -18478));
PIPE Row(spell_code('feng', -18463));
PIPE Row(spell_code('fo', -18448));
PIPE Row(spell_code('fou', -18447));
PIPE Row(spell_code('fu', -18446));
PIPE Row(spell_code('ga', -18239));
PIPE Row(spell_code('gai', -18237));
PIPE Row(spell_code('gan', -18231));
PIPE Row(spell_code('gang', -18220));
PIPE Row(spell_code('gao', -18211));
PIPE Row(spell_code('ge', -18201));
PIPE Row(spell_code('gei', -18184));
PIPE Row(spell_code('gen', -18183));
PIPE Row(spell_code('geng', -18181));
PIPE Row(spell_code('gong', -18012));
PIPE Row(spell_code('gou', -17997));
PIPE Row(spell_code('gu', -17988));
PIPE Row(spell_code('gua', -17970));
PIPE Row(spell_code('guai', -17964));
PIPE Row(spell_code('guan', -17961));
PIPE Row(spell_code('guang', -17950));
PIPE Row(spell_code('gui', -17947));
PIPE Row(spell_code('gun', -17931));
PIPE Row(spell_code('guo', -17928));
PIPE Row(spell_code('ha', -17922));
PIPE Row(spell_code('hai', -17759));
PIPE Row(spell_code('han', -17752));
PIPE Row(spell_code('hang', -17733));
PIPE Row(spell_code('hao', -17730));
PIPE Row(spell_code('he', -17721));
PIPE Row(spell_code('hei', -17703));
PIPE Row(spell_code('hen', -17701));
PIPE Row(spell_code('heng', -17697));
PIPE Row(spell_code('hong', -17692));
PIPE Row(spell_code('hou', -17683));
PIPE Row(spell_code('hu', -17676));
PIPE Row(spell_code('hua', -17496));
PIPE Row(spell_code('huai', -17487));
PIPE Row(spell_code('huan', -17482));
PIPE Row(spell_code('huang', -17468));
PIPE Row(spell_code('hui', -17454));
PIPE Row(spell_code('hun', -17433));
PIPE Row(spell_code('huo', -17427));
PIPE Row(spell_code('ji', -17417));
PIPE Row(spell_code('jia', -17202));
PIPE Row(spell_code('jian', -17185));
PIPE Row(spell_code('jiang', -16983));
PIPE Row(spell_code('jiao', -16970));
PIPE Row(spell_code('jie', -16942));
PIPE Row(spell_code('jin', -16915));
PIPE Row(spell_code('jing', -16733));
PIPE Row(spell_code('jiong', -16708));
PIPE Row(spell_code('jiu', -16706));
PIPE Row(spell_code('ju', -16689));
PIPE Row(spell_code('juan', -16664));
PIPE Row(spell_code('jue', -16657));
PIPE Row(spell_code('jun', -16647));
PIPE Row(spell_code('ka', -16474));
PIPE Row(spell_code('kai', -16470));
PIPE Row(spell_code('kan', -16465));
PIPE Row(spell_code('kang', -16459));
PIPE Row(spell_code('kao', -16452));
PIPE Row(spell_code('ke', -16448));
PIPE Row(spell_code('ken', -16433));
PIPE Row(spell_code('keng', -16429));
PIPE Row(spell_code('kong', -16427));
PIPE Row(spell_code('kou', -16423));
PIPE Row(spell_code('ku', -16419));
PIPE Row(spell_code('kua', -16412));
PIPE Row(spell_code('kuai', -16407));
PIPE Row(spell_code('kuan', -16403));
PIPE Row(spell_code('kuang', -16401));
PIPE Row(spell_code('kui', -16393));
PIPE Row(spell_code('kun', -16220));
PIPE Row(spell_code('kuo', -16216));
PIPE Row(spell_code('la', -16212));
PIPE Row(spell_code('lai', -16205));
PIPE Row(spell_code('lan', -16202));
PIPE Row(spell_code('lang', -16187));
PIPE Row(spell_code('lao', -16180));
PIPE Row(spell_code('le', -16171));
PIPE Row(spell_code('lei', -16169));
PIPE Row(spell_code('leng', -16158));
PIPE Row(spell_code('li', -16155));
PIPE Row(spell_code('lia', -15959));
PIPE Row(spell_code('lian', -15958));
PIPE Row(spell_code('liang', -15944));
PIPE Row(spell_code('liao', -15933));
PIPE Row(spell_code('lie', -15920));
PIPE Row(spell_code('lin', -15915));
PIPE Row(spell_code('ling', -15903));
PIPE Row(spell_code('liu', -15889));
PIPE Row(spell_code('long', -15878));
PIPE Row(spell_code('lou', -15707));
PIPE Row(spell_code('lu', -15701));
PIPE Row(spell_code('lv', -15681));
PIPE Row(spell_code('luan', -15667));
PIPE Row(spell_code('lue', -15661));
PIPE Row(spell_code('lun', -15659));
PIPE Row(spell_code('luo', -15652));
PIPE Row(spell_code('ma', -15640));
PIPE Row(spell_code('mai', -15631));
PIPE Row(spell_code('man', -15625));
PIPE Row(spell_code('mang', -15454));
PIPE Row(spell_code('mao', -15448));
PIPE Row(spell_code('me', -15436));
PIPE Row(spell_code('mei', -15435));
PIPE Row(spell_code('men', -15419));
PIPE Row(spell_code('meng', -15416));
PIPE Row(spell_code('mi', -15408));
PIPE Row(spell_code('mian', -15394));
PIPE Row(spell_code('miao', -15385));
PIPE Row(spell_code('mie', -15377));
PIPE Row(spell_code('min', -15375));
PIPE Row(spell_code('ming', -15369));
PIPE Row(spell_code('miu', -15363));
PIPE Row(spell_code('mo', -15362));
PIPE Row(spell_code('mou', -15183));
PIPE Row(spell_code('mu', -15180));
PIPE Row(spell_code('na', -15165));
PIPE Row(spell_code('nai', -15158));
PIPE Row(spell_code('nan', -15153));
PIPE Row(spell_code('nang', -15150));
PIPE Row(spell_code('nao', -15149));
PIPE Row(spell_code('ne', -15144));
PIPE Row(spell_code('nei', -15143));
PIPE Row(spell_code('nen', -15141));
PIPE Row(spell_code('neng', -15140));
PIPE Row(spell_code('ni', -15139));
PIPE Row(spell_code('nian', -15128));
PIPE Row(spell_code('niang', -15121));
PIPE Row(spell_code('niao', -15119));
PIPE Row(spell_code('nie', -15117));
PIPE Row(spell_code('nin', -15110));
PIPE Row(spell_code('ning', -15109));
PIPE Row(spell_code('niu', -14941));
PIPE Row(spell_code('nong', -14937));
PIPE Row(spell_code('nu', -14933));
PIPE Row(spell_code('nv', -14930));
PIPE Row(spell_code('nuan', -14929));
PIPE Row(spell_code('nue', -14928));
PIPE Row(spell_code('nuo', -14926));
PIPE Row(spell_code('o', -14922));
PIPE Row(spell_code('ou', -14921));
PIPE Row(spell_code('pa', -14914));
PIPE Row(spell_code('pai', -14908));
PIPE Row(spell_code('pan', -14902));
PIPE Row(spell_code('pang', -14894));
PIPE Row(spell_code('pao', -14889));
PIPE Row(spell_code('pei', -14882));
PIPE Row(spell_code('pen', -14873));
PIPE Row(spell_code('peng', -14871));
PIPE Row(spell_code('pi', -14857));
PIPE Row(spell_code('pian', -14678));
PIPE Row(spell_code('piao', -14674));
PIPE Row(spell_code('pie', -14670));
PIPE Row(spell_code('pin', -14668));
PIPE Row(spell_code('ping', -14663));
PIPE Row(spell_code('po', -14654));
PIPE Row(spell_code('pu', -14645));
PIPE Row(spell_code('qi', -14630));
PIPE Row(spell_code('qia', -14594));
PIPE Row(spell_code('qian', -14429));
PIPE Row(spell_code('qiang', -14407));
PIPE Row(spell_code('qiao', -14399));
PIPE Row(spell_code('qie', -14384));
PIPE Row(spell_code('qin', -14379));
PIPE Row(spell_code('qing', -14368));
PIPE Row(spell_code('qiong', -14355));
PIPE Row(spell_code('qiu', -14353));
PIPE Row(spell_code('qu', -14345));
PIPE Row(spell_code('quan', -14170));
PIPE Row(spell_code('que', -14159));
PIPE Row(spell_code('qun', -14151));
PIPE Row(spell_code('ran', -14149));
PIPE Row(spell_code('rang', -14145));
PIPE Row(spell_code('rao', -14140));
PIPE Row(spell_code('re', -14137));
PIPE Row(spell_code('ren', -14135));
PIPE Row(spell_code('reng', -14125));
PIPE Row(spell_code('ri', -14123));
PIPE Row(spell_code('rong', -14122));
PIPE Row(spell_code('rou', -14112));
PIPE Row(spell_code('ru', -14109));
PIPE Row(spell_code('ruan', -14099));
PIPE Row(spell_code('rui', -14097));
PIPE Row(spell_code('run', -14094));
PIPE Row(spell_code('ruo', -14092));
PIPE Row(spell_code('sa', -14090));
PIPE Row(spell_code('sai', -14087));
PIPE Row(spell_code('san', -14083));
PIPE Row(spell_code('sang', -13917));
PIPE Row(spell_code('sao', -13914));
PIPE Row(spell_code('se', -13910));
PIPE Row(spell_code('sen', -13907));
PIPE Row(spell_code('seng', -13906));
PIPE Row(spell_code('sha', -13905));
PIPE Row(spell_code('shai', -13896));
PIPE Row(spell_code('shan', -13894));
PIPE Row(spell_code('shang', -13878));
PIPE Row(spell_code('shao', -13870));
PIPE Row(spell_code('she', -13859));
PIPE Row(spell_code('shen', -13847));
PIPE Row(spell_code('sheng', -13831));
PIPE Row(spell_code('shi', -13658));
PIPE Row(spell_code('shou', -13611));
PIPE Row(spell_code('shu', -13601));
PIPE Row(spell_code('shua', -13406));
PIPE Row(spell_code('shuai', -13404));
PIPE Row(spell_code('shuan', -13400));
PIPE Row(spell_code('shuang', -13398));
PIPE Row(spell_code('shui', -13395));
PIPE Row(spell_code('shun', -13391));
PIPE Row(spell_code('shuo', -13387));
PIPE Row(spell_code('si', -13383));
PIPE Row(spell_code('song', -13367));
PIPE Row(spell_code('sou', -13359));
PIPE Row(spell_code('su', -13356));
PIPE Row(spell_code('suan', -13343));
PIPE Row(spell_code('sui', -13340));
PIPE Row(spell_code('sun', -13329));
PIPE Row(spell_code('suo', -13326));
PIPE Row(spell_code('ta', -13318));
PIPE Row(spell_code('tai', -13147));
PIPE Row(spell_code('tan', -13138));
PIPE Row(spell_code('tang', -13120));
PIPE Row(spell_code('tao', -13107));
PIPE Row(spell_code('te', -13096));
PIPE Row(spell_code('teng', -13095));
PIPE Row(spell_code('ti', -13091));
PIPE Row(spell_code('tian', -13076));
PIPE Row(spell_code('tiao', -13068));
PIPE Row(spell_code('tie', -13063));
PIPE Row(spell_code('ting', -13060));
PIPE Row(spell_code('tong', -12888));
PIPE Row(spell_code('tou', -12875));
PIPE Row(spell_code('tu', -12871));
PIPE Row(spell_code('tuan', -12860));
PIPE Row(spell_code('tui', -12858));
PIPE Row(spell_code('tun', -12852));
PIPE Row(spell_code('tuo', -12849));
PIPE Row(spell_code('wa', -12838));
PIPE Row(spell_code('wai', -12831));
PIPE Row(spell_code('wan', -12829));
PIPE Row(spell_code('wang', -12812));
PIPE Row(spell_code('wei', -12802));
PIPE Row(spell_code('wen', -12607));
PIPE Row(spell_code('weng', -12597));
PIPE Row(spell_code('wo', -12594));
PIPE Row(spell_code('wu', -12585));
PIPE Row(spell_code('xi', -12556));
PIPE Row(spell_code('xia', -12359));
PIPE Row(spell_code('xian', -12346));
PIPE Row(spell_code('xiang', -12320));
PIPE Row(spell_code('xiao', -12300));
PIPE Row(spell_code('xie', -12120));
PIPE Row(spell_code('xin', -12099));
PIPE Row(spell_code('xing', -12089));
PIPE Row(spell_code('xiong', -12074));
PIPE Row(spell_code('xiu', -12067));
PIPE Row(spell_code('xu', -12058));
PIPE Row(spell_code('xuan', -12039));
PIPE Row(spell_code('xue', -11867));
PIPE Row(spell_code('xun', -11861));
PIPE Row(spell_code('ya', -11847));
PIPE Row(spell_code('yan', -11831));
PIPE Row(spell_code('yang', -11798));
PIPE Row(spell_code('yao', -11781));
PIPE Row(spell_code('ye', -11604));
PIPE Row(spell_code('yi', -11589));
PIPE Row(spell_code('yin', -11536));
PIPE Row(spell_code('ying', -11358));
PIPE Row(spell_code('yo', -11340));
PIPE Row(spell_code('yong', -11339));
PIPE Row(spell_code('you', -11324));
PIPE Row(spell_code('yu', -11303));
PIPE Row(spell_code('yuan', -11097));
PIPE Row(spell_code('yue', -11077));
PIPE Row(spell_code('yun', -11067));
PIPE Row(spell_code('za', -11055));
PIPE Row(spell_code('zai', -11052));
PIPE Row(spell_code('zan', -11045));
PIPE Row(spell_code('zang', -11041));
PIPE Row(spell_code('zao', -11038));
PIPE Row(spell_code('ze', -11024));
PIPE Row(spell_code('zei', -11020));
PIPE Row(spell_code('zen', -11019));
PIPE Row(spell_code('zeng', -11018));
PIPE Row(spell_code('zha', -11014));
PIPE Row(spell_code('zhai', -10838));
PIPE Row(spell_code('zhan', -10832));
PIPE Row(spell_code('zhang', -10815));
PIPE Row(spell_code('zhao', -10800));
PIPE Row(spell_code('zhe', -10790));
PIPE Row(spell_code('zhen', -10780));
PIPE Row(spell_code('zheng', -10764));
PIPE Row(spell_code('zhi', -10587));
PIPE Row(spell_code('zhong', -10544));
PIPE Row(spell_code('zhou', -10533));
PIPE Row(spell_code('zhu', -10519));
PIPE Row(spell_code('zhua', -10331));
PIPE Row(spell_code('zhuai', -10329));
PIPE Row(spell_code('zhuan', -10328));
PIPE Row(spell_code('zhuang', -10322));
PIPE Row(spell_code('zhui', -10315));
PIPE Row(spell_code('zhun', -10309));
PIPE Row(spell_code('zhuo', -10307));
PIPE Row(spell_code('zi', -10296));
PIPE Row(spell_code('zong', -10281));
PIPE Row(spell_code('zou', -10274));
PIPE Row(spell_code('zu', -10270));
PIPE Row(spell_code('zuan', -10262));
PIPE Row(spell_code('zui', -10260));
PIPE Row(spell_code('zun', -10256));
PIPE Row(spell_code('zuo', -10254));
Return;
end;
--hanjs,07-10-24,返回拼音与代码的对应关系
/
--此函数默认返回汉字拼音的首字母,第二个参数不为空则返回全拼。
create or replace function f_getFirstOrFullSpell(p_cnStr In varchar2,p_sign In number default null) return varchar2
as
lv_spell varchar2(200);
lv_temp Varchar2(10);
lv_char varchar2(10);
--lv_bytes varchar2(100);
li_bytes Integer;
--li_pos Integer;
begin
if p_cnStr is null then
return '';
end if;
for i In 1..length(p_cnStr) loop
lv_char:=substr(p_cnStr,i,1);
if lengthb(lv_char) = 1 then
lv_spell:=lv_spell||lv_char;
elsif lengthb(lv_char) = 2 then
--Select replace(substrb(dump(lv_char,1010),instrb(dump(lv_char,1010),'ZHS16GBK:')),'ZHS16GBK: ','') Into lv_bytes from dual;
--li_pos:=instr(lv_bytes,',');
--li_bytes:=substr(lv_bytes,1,li_pos-1)*256+substr(lv_bytes,li_pos+1)-256*256;
Select ascii(lv_char)-256*256 Into li_bytes From dual;
select max(spell) Into lv_temp from table(f_getSpellcode) where code if p_sign is null then
lv_spell:=lv_spell||substr(lv_temp,1,1);
else
lv_spell:=lv_spell||lv_temp;
end if;
elsif lengthb(lv_char) = 3 then
--Select replace(substrb(dump(convert(lv_char,'ZHS16GBK','UTF8'),1010),instrb(dump(convert(lv_char,'ZHS16GBK','UTF8'),1010),'UTF8:')),'UTF8: ','')
--Into lv_bytes from dual;
--li_pos:=instr(lv_bytes,',');
--li_bytes:=substr(lv_bytes,1,li_pos-1)*256+substr(lv_bytes,li_pos+1)-256*256;
Select ascii(lv_char)-256*256 Into li_bytes From dual;
select max(spell) Into lv_temp from table(f_getSpellcode) where code if p_sign is null then
lv_spell:=lv_spell||substr(lv_char,1,1);
else
lv_spell:=lv_spell||lv_char;
end if;
end if;
end loop;
return lv_spell;
end;
--hanjs,07-10-24,此函数默认返回汉字拼音的首字母,第二个参数不为空则返回全拼。
/

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The retention period of Oracle database logs depends on the log type and configuration, including: Redo logs: determined by the maximum size configured with the "LOG_ARCHIVE_DEST" parameter. Archived redo logs: Determined by the maximum size configured by the "DB_RECOVERY_FILE_DEST_SIZE" parameter. Online redo logs: not archived, lost when the database is restarted, and the retention period is consistent with the instance running time. Audit log: Configured by the "AUDIT_TRAIL" parameter, retained for 30 days by default.

The Oracle database startup sequence is: 1. Check the preconditions; 2. Start the listener; 3. Start the database instance; 4. Wait for the database to open; 5. Connect to the database; 6. Verify the database status; 7. Enable the service (if necessary ); 8. Test the connection.

To find the number of occurrences of a character in Oracle, perform the following steps: Get the total length of a string; Get the length of the substring in which a character occurs; Count the number of occurrences of a character by subtracting the substring length from the total length.

Oracle database server hardware configuration requirements: Processor: multi-core, with a main frequency of at least 2.5 GHz. For large databases, 32 cores or more are recommended. Memory: At least 8GB for small databases, 16-64GB for medium sizes, up to 512GB or more for large databases or heavy workloads. Storage: SSD or NVMe disks, RAID arrays for redundancy and performance. Network: High-speed network (10GbE or higher), dedicated network card, low-latency network. Others: Stable power supply, redundant components, compatible operating system and software, heat dissipation and cooling system.

The amount of memory required by Oracle depends on database size, activity level, and required performance level: for storing data buffers, index buffers, executing SQL statements, and managing the data dictionary cache. The exact amount is affected by database size, activity level, and required performance level. Best practices include setting the appropriate SGA size, sizing SGA components, using AMM, and monitoring memory usage.

The amount of memory required for an Oracle database depends on the database size, workload type, and number of concurrent users. General recommendations: Small databases: 16-32 GB, Medium databases: 32-64 GB, Large databases: 64 GB or more. Other factors to consider include database version, memory optimization options, virtualization, and best practices (monitor memory usage, adjust allocations).

To create a scheduled task in Oracle that executes once a day, you need to perform the following three steps: Create a job. Add a subjob to the job and set its schedule expression to "INTERVAL 1 DAY". Enable the job.

Oracle can read dbf files through the following steps: create an external table and reference the dbf file; query the external table to retrieve data; import the data into the Oracle table.
