When using Oracle Database to format a number to have leading zeros, we need to convert it to a string and format it accordingly.
You can use the TO_CHAR(number) function to format numbers with leading zeros.
And perhaps a lesser known fact, is that you can also use the LPAD() function to pad a number with leading zeros.
When you use the TO_CHAR() function to format a number in Oracle, you use a format model to determine how the number should be formatted.
For example, you could format a number like 12,345.00 or like 12.345,00, depending on your locale.
The format model can include the G or D format elements to add a comma to a number. Which one you use depends on whether you want the comma as a thousands separator, or as a decimal character.
Alternatively, you can use an actual comma character (,) if you prefer, although this method is not locale aware like the G and D format elements are.
Oracle Database provides the TO_CHAR(number) function that enables you to format numbers based on a given format model. There are three format elements that you can use with the TO_CHAR() function in order to return a value as a currency.
When using Oracle Database, you can use functions like TO_CHAR(number) to return numbers as a string, formatted to two decimal places (or however many decimal places you require).
Or you can use functions like ROUND(number) and TRUNC(number) to round or truncate the number to your required number of decimal places.
Below are two functions that can be used to return the minutes portion from a datetime value in Oracle Database.
In Oracle Database, the CHARTOROWID() function converts a string value to ROWID data type.
In MariaDB, you can use the DATE_FORMAT() function to return various date parts from a date. One of the things you can return is the short month name. For example Nov or Dec (instead of November or December).
In Oracle Database, the TO_DATE() function converts its argument to a value of DATE data type.
When using the TO_CHAR() function to format a datetime value in Oracle Database, you can add the meridiem indicator (AM/PM) by simply adding either AM or PM to your format model.
Oracle then displays the appropriate meridiem indicator, depending on whether the time value is AM or PM.
You can provide it in any uppercase or lowercase, and with or without dots (e.g. AM, A.M. am, a.m, etc). Oracle will then display the meridiem indicator as specified.
In Oracle Database, the RAWTONHEX() function converts a raw value to hexadecimal.
It’s similar to the RAWTOHEX() function, except that its value is always returned in the national character set.