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Specify text, alignment, format and wrapping for a given column,
for the duration of the current session.
Syntax:
COL[UMN] [{column|expr} [option ...]]
options:
ALIAS alias Assign an alias to a column, which can be used by
BREAK, COMPUTE, and other COLUMN commands.
COL em_salary+em_bonus ALIAS tot_income
CLEAR Reset the display attributes for the column to default.
FOLD_AFTER Inserts a CR after the col heading and after each row.
FOLD_BEFORE Inserts a CR before the col heading and before each row.
FORMAT format Format a column (e.g. COL emp_name FORMAT A15)
HEA[DING] 'text' Set a column heading
JUSTIFY {L[EFT]|C[ENTER]|C[ENTRE]|R[IGHT]}
By default Numbers are right justified, text is left justified.
LIKE {expr|alias}
Format like another column (already defined)
NEWLINE Same as FOLD_BEFORE
NEW_VALUE variable
Specify a variable to hold a column value. (see TTITLE)
NOPRINT|PRINT Display the column
NUL[L] char Display NULL values as Char
OLD_VALUE variable
Specify a variable to hold a column value. (see BTITLE)
ON|OFF Enable or disable column format attributes
WRA[PPED]|WOR[D_WRAPPED]|TRU[NCATED]
How to treat long CHAR strings
Note:
expressions like 'em_salary+em_bonus' must match exactly the
SELECT statement being run.
If no option is specified, COLUMN will list the current attributes.
Related Commands:
to_char
SET NUMWIDTH - default width for Number columns
SET LONG - default width for LONG columns
SET LONGCHUNKSIZE - default width for LONG columns
SET MAXDATA - Max width for columns
