What is the function of the to_date function in pgsql?

In pgsql, the purpose of the to_date function is to convert a string into a date value. This function takes two parameters: a string representing the date and a format pattern representing the date. The to_date function will parse the input string according to the specified format pattern and return the corresponding date value. For example, if the input string is “2022-01-01” and the format pattern is “YYYY-MM-DD”, then the to_date function will return a date value representing January 1st, 2022.