Syntax
[画像:Description of to_timestamp.gif follows]Purpose
TO_TIMESTAMP converts char of CHAR, VARCHAR2, NCHAR, or NVARCHAR2 datatype to a value of TIMESTAMP datatype.
The optional fmt specifies the format of char. If you omit fmt, then char must be in the default format of the TIMESTAMP datatype, which is determined by the NLS_TIMESTAMP_FORMAT initialization parameter. The optional 'nlsparam' argument has the same purpose in this function as in the TO_CHAR function for date conversion.
This function does not support CLOB data directly. However, CLOBs can be passed in as arguments through implicit data conversion.
See Also:
"Datatype Comparison Rules" for more information.Examples
The following example converts a character string to a timestamp. The character string is not in the default TIMESTAMP format, so the format mask must be specified:
SELECT TO_TIMESTAMP ('10-Sep-02 14:10:10.123000', 'DD-Mon-RR HH24:MI:SS.FF')
FROM DUAL;
TO_TIMESTAMP('10-SEP-.&checktime(0214,10,10,':').123000','DD-MON-RRHH24:MI:SS.FF')
---------------------------------------------------------------------------
10-SEP-02 02.10.10.123000000 PM
See Also:
NLS_TIMESTAMP_FORMAT parameter for information on the default TIMESTAMP format and "Datetime Format Models" for information on specifying the format maskScripting on this page enhances content navigation, but does not change the content in any way.