Oracle Academy Conversion Functions

Conversion Functions

Conversion Functions Date -> Char TO_CHAR (data, 'format') Cuvintele dintre ghilimele in format sunt inserate in sirul afisat exact cum apar Spatiile ce apar informat sunt reproduse in rezultatul afisat fm – elimina spatiile sau zerourile nesemnificative SELECT to_char(sysdate,'dd "din luna" mm "a anului" YYYY') => 10 din luna 03 a anului 2006 SELECT to_char(sysdate,'fmdd "din luna" mm "a anului" YYYY') => 10 din luna 3 a anului 2006

Conversion Functions Date -> Char YYYY Select to_char(sysdate,'dd-mon-YyYy') from dual => 10-mar-2006 YY Select to_char(sysdate,'dd-mon-YY') from dual => 10-mar-06 Y Select to_char(sysdate,'dd-mon-Y') from dual => 10-mar-6 YEAR Select to_char(sysdate,'dd-mon-Year') from dual => 10-mar-Two Thousand Six Select to_char(sysdate,'dd-mon-YEAR') from dual => 10-mar-TWO THOUSAND SIX

Conversion Functions Date -> Char MM Select to_char(sysdate,'dd-mm-YYYY') from dual => 10-03-2006 Select to_char(sysdate,'fmdd-mm-YYYY') from dual => 10-3-2006 MON Select to_char(sysdate,'dd-mon-YYYY') from dual => 10-mar-2006 Select to_char(sysdate,'dd-MON-YYYY') from dual => 10-MAR-2006 Select to_char(sysdate,'dd-Mon-YYYY') from dual => 10-Mar-2006

Conversion Functions Date -> Char MONTH Select to_char(sysdate,'dd-month-YYYY') from dual => 10-march-2006 Select to_char(sysdate,'dd-MONTH-YYYY') from dual => 10-MARCH-2006 Select to_char(sysdate,'dd-Month-YYYY') from dual => 10-March-2006

Conversion Functions Date -> Char SP – se poate combina cu YYY, DD, MM, HH, MI Select to_char(sysdate,'dd-mm-YYYY') from dual => 10-03-2006 Select to_char(sysdate,'ddsp-mm-YYYY') from dual => ten-03-2006 Select to_char(sysdate,'ddspth-mm-YYYY') from dual => tenth-03-2006 Select to_char(sysdate-7,'ddspth-mm-YYYY') from dual => third-03-2006

Conversion Functions Date -> Char DD - ziua din luna (1..31) Select to_char(sysdate,'dd-mm-YYYY') from dual => 10-03-2006 DDth DDTH (the spell is set by DD not the TH) Select to_char(sysdate,'DDth-mm-YYYY') from dual => 10TH-03-2006 Ddth DdTH Select to_char(sysdate,'DdTH-mm-YYYY') from dual => 10Th-03-2006 ddth ddTH Select to_char(sysdate,'ddTH-mm-YYYY') from dual => 10th-03-2006

Conversion Functions Date -> Char D – ziua din saptamana (1..7) Select to_char(sysdate,'d-mm-YYYY') from dual => 6-03-2006 DAY Select to_char(sysdate,'Day, dd-mm-YYYY') from dual => Friday, 10-03-2006 DY – abrevierea cu trei caractere Select to_char(sysdate,'DY, dd-mm-YYYY') from dual => FRI, 10-03-2006 DDD – ziua din an (1..366) Select to_char(sysdate,'ddd "of" YYYY') from dual => 69 of 2006

Conversion Functions Char -> Date TO_DATE('data', 'format') Se folosesc aceleasi formate ca si la TO_CHAR cu urmatoarele restrictii: Nu se pot folosi siruri incluse intre ghilimele: SELECT to_date('10 of March 2006','dd "of" March, YYYY') => eroare! Zilele nu pot fi scrise cu litere, trebuie sa fie numere SELECT to_date('Ten March 2006','Ddsp March, YYYY')

RR and YY format

RR and YY format Select TO_CHAR(TO_DATE('01-01-97','dd-mm-yy'),'YYYY') => Select TO_CHAR(TO_DATE('01-01-97','dd-mm-rr'),'RRR') Select TO_CHAR(TO_DATE('01-01-97','dd-mm-rr'),'YYYY') Select TO_CHAR(TO_DATE('01-01-97','dd-mm-yy'),'RRR')