Issues to be aware of when using To_char for YYYY-MM-DD HH:mm:ss conversion in PostgreSQL

In Java and some of the commonly used data (Mysql/sqlsever) in the month and day of the conversion, are used

SELECT to_char (current_date, ' yyyy-mm-dd hh:MM:ss ')

However, there is a problem with this in PostgreSQL, and executing the above statement in PG returns the result

2015-05-06 12:05:00

See, this is not what we want, how to deal with it? In PG, use the following method

SELECT to_char (current_date, ' yyyy-mm-dd hh24:MI:ss ')

The results are as follows

2015-05-06 00:00:00

This is what we want to result, it seems not to take for granted, that all databases are the same, be careful

Issues to be aware of when using To_char for YYYY-MM-DD HH:mm:ss conversion in PostgreSQL