postgresqlHow do I use the PostgreSQL to_char function?

The PostgreSQL to_char function is used to convert a timestamp or number into a string. The syntax of the to_char function is as follows:

to_char(value, format)

Where value is the timestamp or number to be converted and format is the format to use for the conversion.

For example, to convert a timestamp to a string with the format of 'DD-MON-YYYY' you would use the following:

SELECT to_char(current_timestamp, 'DD-MON-YYYY');

Which would output something like:

19-JAN-2021

The format argument can contain a wide variety of elements, including:

• YYYY: 4-digit year
• MM: 2-digit month
• DD: 2-digit day
• HH24: 24-hour format
• MI: Minute
• SS: Second

For a full list of available elements, see the PostgreSQL documentation.

The to_char function is very useful when working with timestamps and numbers, allowing them to be easily converted into strings for display or other purposes.

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