關於Oracle數字型轉字符串的相關問題（小數0.1會變成.1）

轉載自：https://blog.csdn.net/xpy_java/article/details/72674060

select to_char(a,'99D90'),
       to_char(a,'90D90'),
       to_char(a,'FM90D99'),
       rtrim(to_char(a,'FM90D99'),to_char(0,'D'))
from(
       select 50 a from dual
       union all select 50.57 from dual
       union all select 5.57 from dual
       union all select 0.35 from dual
       union all select 0.4 from dual
)

通過Oracle裏面FM90D99來實現個位數是0的展示。