How can I reduce the width of column in Oracle (SQL Plus) with TIMESTAMP datatype? -

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in sql plus output taking more space needs , i'd reduce 50 chars 20.

if reduce width 20 won't wide enough default timestamp or timestamp time zone format. when happens, sqlplus wrap value.

assume table b has timestamp column ts:

column ts format a20 select ts b;  ts -------------------- 25-apr-13 11.28.40.1 50000

to cut down width further, decide information want , format accordingly. oracle datetime , timestamp formatting codes listed here.

note sqlplus won't let specify date format column statement. that's why used format a20 above. can 19 characters if drop fractional seconds , use 24-hour clock instead of am/pm, , drop time zone:

column tsformatted format a20 select to_char(ts, 'mm/dd/yyyy hh24:mi:ss') tsformatted b;  tsformatted -------------------- 04/25/2013 11:28:40

if you're willing drop century can 2 of fractional seconds , exact width of 20:

column tsformatted format a20 select to_char(ts, 'mm/dd/yy hh24:mi:ss.ff2') tsformatted b;  tsformatted -------------------- 04/25/13 11:28:40.15

finally, if want of timestamps automatically formatted in way, use alter session:

alter session set nls_timestamp_format = 'mm/dd/yy hh24:mi:ss.ff2'; column ts format a20 select ts b; -- don't need to_char because of default format  ts -------------------- 04/25/13 11:28:40.15

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