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1. Ö´ÐÐÒ»¸öSQL½Å±¾Îļþ
SQL>start file_name
SQL>@ file_name
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2. ¶Ôµ±Ç°µÄÊäÈë½øÐб༭
SQL>edit
3. ÖØÐÂÔËÐÐÉÏÒ»´ÎÔËÐеÄsqlÓï¾ä
SQL>/
4. ½«ÏÔʾµÄÄÚÈÝÊä³öµ½Ö¸¶¨Îļþ
SQL> SPOOL file_name
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5. ¹Ø±ÕspoolÊä³ö
SQL> SPOOL OFF
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SQL> desc table_name
7. COLÃüÁ Ö÷Òª¸ñʽ»¯ÁеÄÏÔʾÐÎʽ¡£
SQL> help col
 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]}
    


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