oracle to_timestamp and to_date

Oracle/PLSQL: To_Timestamp Function

In Oracle/PLSQL, the to_timestamp function converts a string to a timestamp.

The syntax for the to_timestamp function is:

to_timestamp( string1, [ format_mask ] [ 'nlsparam' ] )

string1 is the string that will be converted to a timestamp.

format_mask is optional. This is the format that will be used to convert string1 to a timestamp.

 

The following is a list of options for the format_mask parameter. These parameters can be used in many combinations.

ParameterExplanation
YYYY 4-digit year
MM Month (01-12; JAN = 01).
MON Abbreviated name of month.
MONTH Name of month, padded with blanks to length of 9 characters.
DD Day of month (1-31).
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).

 

Applies To:

  • Oracle 9i, Oracle 10g, Oracle 11g

 

For example:

to_timestamp('2003/12/13 10:13:18', 'YYYY/MM/DD HH:MI:SS')

would return '13-DEC-03 10.13.18.000000000 AM' as a timestamp value.

 

to_timestamp('2003/DEC/13 10:13:18', 'YYYY/MON/DD HH:MI:SS')

would also return '13-DEC-03 10.13.18.000000000 AM' as a timestamp value.

posted on 2013-03-14 19:35  善敗將軍  阅读(332)  评论(0)  编辑  收藏  举报

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