How do you use the to_timestamp function in the PostgreSQL database?

In PostgreSQL database, the to_timestamp function is used to convert a string into timestamp data type. Its syntax is as follows:

to_timestamp(text, text)

The first parameter is the string to be converted, and the second parameter is the format of the string. For example, if you want to convert a string containing date and time to a timestamp type, you can use the to_timestamp function like this:

SELECT to_timestamp('2022-10-25 14:30:00', 'YYYY-MM-DD HH24:MI:SS');

This will convert the string ‘2022-10-25 14:30:00’ into a timestamp value. Please note that the format string in the second parameter must match the format of the string, otherwise an error will occur.