PostgreSQL: Using to_number() Function

The to_number function in PostgreSQL is used to convert a text string into a numeric format. Its syntax is as follows:

to_number(text, format)

In this case, text refers to the text string to be converted, and format refers to the pattern of numbers.

For example, convert the text string ‘123.45’ to a numerical format.

SELECT to_number('123.45', '999.99');

Please adjust the format parameter according to the actual situation to ensure the correct conversion of the text string into a numerical format.