TO_CHAR Function :
Syntax : TO_CHAR (input_value, fmt_mask, nls_language);
- input_value can be either a string,number or a interval of datetime.
- Return type is VARCHAR2
- fmt_mask is the format type to which the input value is converted. This parameter is optional.
- nls_language determines the language in which the month,day and other abbreviated strings are returned. This parameter is optional.
Example 1:
SELECT TO_CHAR(SYSDATE, 'yyyy/mm/dd') FROM DUAL;
RESULT
-----------
2015/03/09
Example 2:
SELECT TO_CHAR(SYSADTE, 'Month DD, YYYY') FROM DUAL;
RESULT
-----------
March 09, 2015
| Parameter | Explanation |
|---|---|
| YYYY | 4-digit year |
| YEAR | Year, spelled out |
| YYY YY Y | Last 3, 2, or 1 digit(s) of year. |
| IYY IY I | Last 3, 2, or 1 digit(s) of ISO year. |
| IYYY | 4-digit year based on the ISO standard |
| Q | Quarter of year (1, 2, 3, 4; JAN-MAR = 1). |
| MM | Month (01-12; JAN = 01). |
| MON | Abbreviated name of month. |
| MONTH | Name of month, padded with blanks to length of 9 characters. |
| RM | Roman numeral month (I-XII; JAN = I). |
| WW | Week of year (1-53) where week 1 starts on the first day of the year and continues to the seventh day of the year. |
| W | Week of month (1-5) where week 1 starts on the first day of the month and ends on the seventh. |
| IW | Week of year (1-52 or 1-53) based on the ISO standard. |
| D | Day of week (1-7). |
| DAY | Name of day. |
| DD | Day of month (1-31). |
| DDD | Day of year (1-366). |
| DY | Abbreviated name of day. |
| J | Julian day; the number of days since January 1, 4712 BC. specified with J must be integers |
| HH | Hour of day (1-12). |
| HH12 | Hour of day (1-12). |
| HH24 | Hour of day (0-23). |
| MI | Minute (0-59). |
| SS | Second (0-59). |
| FF | Fractional seconds. |
| SSSSS | Seconds past midnight (0-86399) |