sql - Convert mm/dd/yyyy to yyyy-mm-dd in Oracle -


the date column have in varchar2 , want convert values in yyyy-mm-dd

date 7/26/2013 7/29/2013 8/1/2013  8/4/2013  7/28/2013 7/31/2013 8/3/2013  7/30/2013 8/5/2013  7/25/2013 8/2/2013  8/6/2013  7/27/2013

you should never store dates in varchar column

so in order display differently now, need first convert string date , string

if "dates" have right (and same) format, following should work:

select to_char(to_date(date, 'mm/dd/yyyy'), 'yyyy-mm-dd') the_table;

but wouldn't surprised if gives error because 1 or more rows have date formatted differently. not have happened had defined column of type date right beginning.

you should really, consider changing column real date column.

btw: date horrible name such column. reserved word , doesn't tell stored in column (a "start date", "end date", "birth date", "due date", ...)


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