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column [SQL*Plus]

SQL> column colum_name alias alias_name
SQL> column colum_name clear

SQL> column colum_name entmap on
SQL> column colum_name entmap off

SQL> column colum_name fold_after
SQL> column colum_name fold_before
SQL> column colum_name format a25
SQL> column colum_name heading header_text

SQL> column colum_name justify left
SQL> column colum_name justify right
SQL> column colum_name justify center

SQL> column colum_name like expr|alias
SQL> column colum_name newline
SQL> column colum_name new_value variable
SQL> column colum_name print 
SQL> column colum_name noprint 
SQL> column colum_name old_value 

SQL> column colum_name on 
SQL> column colum_name off 

SQL> column colum_name wrapped 
SQL> column colum_name word_wrapped 
SQL> column colum_name truncated 
This command can be used to make the output in SQL*Plus prettier.

format

Specifies the format for a column (that is, how the data of the column is printed).
column column_name format a20
column column_name format a50 word_wrapped
column column_name format 999.999  -- Decimal sign
column column_name format 999,999  -- Seperate thousands
column column_name format $999     -- Include leading $ sign

noprint

A column that is defined noprint will, not so strangly, not be printed at all.