trunc function in sql code example

Example 1: trunc sql

SELECT TRUNC(TO_DATE('27-OCT-92','DD-MON-YY'), 'YEAR')
  "New Year" FROM DUAL;
 
New Year
---------
01-JAN-92

Example 2: sql trunc

-- trunc(date, format)						DUAL is for Oracle
SELECT trunc(sysdate) FROM DUAL;            -- today 00:00:00
SELECT trunc(sysdate, 'Q') FROM DUAL;       -- 1rst quarter day
SELECT trunc(sysdate, 'YEAR') FROM DUAL;    -- 1rst year day
SELECT trunc(sysdate, 'MONTH') FROM DUAL;   -- 1rst month day

Example 3: trunc in sql

TRUNC function returns a date truncated
to a specific unit of measure.
TRUNC function returns a date truncated
to a specific unit of measure.