（sql plus）如何防止oracle数据库中的自动舍入？

Question

我的值为33.75,48.75和26.25

那么如何才能将它们显示为34,49和26？

SQL> SELECT p.price "Price in SAR"
  2  FROM payment p;

      Price in SAR
      ------------
      49
      49
      34
      26
      26
      26
      34
      49

Answer 1

我怀疑这是由于该列的数据类型：

https://docs.oracle.com/cd/B28359_01/server.111/b28318/datatype.htm#CNCPT313

create table t1 (col1 number (5));
insert into t1 values (33.75);
insert into t1 values (48.75);
insert into t1 values (26.25);
insert into t1 values (10.50);
create table t2 (col1 number (5,2));
insert into t2 values (33.75);
insert into t2 values (48.75);
insert into t2 values (26.25);
insert into t2 values (10.50);

select * from t1;

      COL1
----------
        34
        49
        26
        11

SQL> select * from t2;

      COL1
----------
     33.75
     48.75
     26.25
      10.5

SQL> select to_char(col1, '99.99') from t2;

    TO_CHA
    ------
     33.75
     48.75
     26.25
     10.50