Purpose
This function converts a string to the TIMESTAMP data type.
Syntax
TO_TIMESTAMP (char,[fmt],['nlsparam'])
Parameters
| Parameter | Description |
|---|---|
| char | A string of the CHAR, VARCHAR2, NCHAR, or NVARCHAR2 data type. |
| fmt | The format of char, which is optional. If you omit fmt, char must be in the default format of the TIMESTAMP data type. |
| nlsparam | The nlsparam parameter specifies the date, time, and number formatting and parsing rules for the TO_TIMESTAMP function. OceanBase Database currently supports only nls_date_language for nlsparam, which specifies the language for the returned month and day. The default value is AMERICA, which cannot be modified. |
Return type
TIMESTAMP
Examples
Convert the string 2021-11-11 11:11:11.11 to a timestamp.
obclient> SELECT TO_TIMESTAMP ('2021-11-11 11:11:11.11', 'YYYY-MM-DD HH24:MI:SS.FF')
FROM DUAL;
+-----------------------------------------------------------------+
| TO_TIMESTAMP('2021-11-1111:11:11.11','YYYY-MM-DDHH24:MI:SS.FF') |
+-----------------------------------------------------------------+
| 11-NOV-21 11.11.11.110000000 AM |
+-----------------------------------------------------------------+
1 row in set