Date et Trimestre

Bonjour

j'aimerais bien savoir comment faire en PL/SQL pour avoir le trimestre ayant une date donnée.

Exemple ayant 10/02/2010 ==> j'aimerais bien avoir T01

Merci

Voila un exemple de solution

Code:

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Select case 
        when sysdate between to_date('01/01/' || extract(year from sysdate), 'dd/mm/yyyy') and last_day(to_date('01/03/' || extract(year from sysdate), 'dd/mm/yyyy')) Then 'T01'
        when sysdate between to_date('01/04/' || extract(year from sysdate), 'dd/mm/yyyy') and last_day(to_date('01/06/' || extract(year from sysdate), 'dd/mm/yyyy')) Then 'T02'
        when sysdate between to_date('01/07/' || extract(year from sysdate), 'dd/mm/yyyy') and last_day(to_date('01/09/' || extract(year from sysdate), 'dd/mm/yyyy')) Then 'T03'
        else 'T04' End Trimestre
From dual;

Code:

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SQL> select to_char(sysdate,'q') from dual;
 
TO_CHAR(SYSDATE,'Q')
--------------------
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