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internal/oracle
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select name from V$database;
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»òhost set ORACLE_SID=sid
»òcmdÀïset ORACLE_SID=sid
»òÐÞ¸Ä×¢²á±íÀïORACLE_SIDÏî
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SQL>start file_name
SQL>@ file_name
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SQL>edit
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SQL>/
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SQL> SPOOL file_name
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SQL> SPOOL OFF
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COL[UMN] [{ column|expr} [ option ...]]
OptionÑ¡Ïî¿ÉÒÔÊÇÈçϵÄ×Ó¾ä:
ALI[AS] alias
CLE[AR]
FOLD_A[FTER]
FOLD_B[EFORE]
FOR[MAT] format
HEA[DING] text
JUS[TIFY] {L[EFT]|C[ENTER]|C[ENTRE]|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]
1). ¸Ä±äȱʡµÄÁбêÌâ
COLUMN column_name HEADING column_heading
For example:
Sql>select * from dept;
DEPTNO DNAME LOC
---------- ---------------------------- ---------
10 ACCOUNTING NEW YORK
sql>col LOC heading location
sql>select * from dept;
DEPTNO DNAME location
--------- ---------------------------- -----------
10 ACCOUNTING NEW YORK
2). ½«ÁÐÃûENAME¸ÄΪÐÂÁÐÃûEMPLOYEE NAME²¢½«ÐÂÁÐÃû·ÅÔÚÁ½ÐÐÉÏ£º
Sql>select * from emp
Department name Salary
---------- ---------- ----------
10 aaa 11
SQL> COLUMN ENAME HEADING ’Employee|Name’
Sql>select * from
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1 create or replace procedure NoParPro
2 as ;
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4 ;
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substring(expression,start,length) ²»¶à˵ÁË,È¡×Ó´®
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