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to_char(1210.73, '9999.9')
would return '1210.7'
to_char(1210.73, '9,999.99')
would return '1,210.73'
to_char(1210.73, '$9,999.00')
would return '$1,210.73'
to_char(21, '000099')
would return '000021'
The following is a list ......