How do I convert a date timestamp in oracle to a date?

Question

I'm looking to convert (using Oracle) a date timestamp [2018-01-25T00:00:00.000+00:00] to a date [2018-01-24]. I've tried several formats however I can't seem to find the right one to convert it. I'm unsure of how to handle the +00:00.

Thanks in advance

Answer 1

It depends on what you really ask.

It you have a real Oracle timestamp and you want a string in format 'YYYY-MM-DD' , you can use to_char() :

select to_char(col, 'YYYY-MM-DD') as res from mytable

If you have a string in ISO timestamp format, and you want a string as a result:

select substr(col, 1, 10) as res from mytable

If you have a timestamp column and you want to set the time portion to 00:00:00 :

select trunc(col) as res from mytable;

This returns a value of datatype date .