sqlplus中有时候某列很长,不想显示,一般使用column xxx format a10,限制输出的长度。
实际上column 还可以加入参数noprint,使该行不显示,例子如下:
SQL> help column
COLUMN
------
Specifies display attributes for a given column, such as:
- text for the column heading
- alignment for the column heading
- format for NUMBER data
- wrapping of column data
Also lists the current display attributes for a single column
or all columns.
COL[UMN] [{column | expr} [option ...] ]
where option represents one of the following clauses:
ALI[AS] alias
CLE[AR]
ENTMAP {ON|OFF}
FOLD_A[FTER]
FOLD_B[EFORE]
FOR[MAT] format
HEA[DING] text
JUS[TIFY] {L[EFT] | C[ENTER] | R[IGHT]}
LIKE {expr | alias}
NEWL[INE]
NEW_V[ALUE] variable
NOPRI[NT] | PRI[NT]
NUL[L] text
OLD_V[ALUE] variable
ON|OFF
WRA[PPED] | WOR[D_WRAPPED] | TRU[NCATED]
SQL> column hiredate clear
SQL> column hiredate noprint
SQL> select * from emp where empno='7369';
EMPNO ENAME JOB MGR SAL COMM DEPTNO
---------- ---------- --------- ---------- ---------- ---------- ----------
7369 SMITH CLERK 7902 800 20
SQL> column hiredate print
SQL> select * from emp where empno='7369';
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- ------------------- ---------- ---------- ----------
7369 SMITH CLERK 7902 1980-12-17 00:00:00 800 20
时间: 2024-08-30 20:21:14