Oracleでtrunc()で数字を切り捨てるサンプル
select trunc(123.458) from dual –123
select trunc(123.458,0) from dual –123
select trunc(123.458,1) from dual –123.4
select trunc(123.458,-1) from dual –120
select trunc(123.458,-4) from dual –0
select trunc(123.458,4) from dual –123.458
select trunc(123) from dual –123
select trunc(123,1) from dual –123
select trunc(123,-1) from dual –120