对子段进行格式化显示
SQL> column bbb format 99999999999999.9999
SQL> select 12312414141441.1234 bbb from dual; BBB
--------------------
12312414141441.1234
SQL> column bbb format 99999999999999.9999
SQL> select 12312414141441.1234 bbb from dual; BBB
--------------------
12312414141441.1234
名称 空? 类型
----------------------------------------- -------- --------------------
NUM FLOAT(126)15:18:50 jlanzpa817>colu num form 9999999999.99;
15:18:56 jlanzpa817>select * from jl; NUM
--------------
6666666666.66已用时间: 00: 00: 00.10