sqlplus 格式化一例

对字符型，用axx格式，对数字型，用9999 格式(999表示占用3列)

SQL> col 'ts#' format 999
SQL> col 'file#' format 999
SQL> col 'name' format a50

SQL> select ts#,file#,name from v$datafile;

TS# FILE# NAME
---- ----- --------------------------------------------------
   0     1 /u01/app/oracle/oradata/orcl/system01.dbf
   1     2 /u01/app/oracle/oradata/orcl/sysaux01.dbf
   2     3 /u01/app/oracle/oradata/orcl/undotbs01.dbf
   4     4 /u01/app/oracle/oradata/orcl/users01.dbf
   6     5 /u01/app/oracle/oradata/orcl/example01.dbf

SQL>