Help Center/ GaussDB(DWS)/ SQL Syntax Reference (8.1.3.x)/ Functions and Operators/ Date and Time Processing Functions and Operators/ date_part
Updated on 2024-12-19 GMT+08:00
View PDF

date_part

The date_part function is modeled on the traditional Ingres equivalent to the SQL-standard function extract:

1
 
date_part('field', source)

Note that the field must be a string, rather than a name. The valid field names are the same as those for extract. For details, see EXTRACT.

Example:

1
2
3
4
5
 
SELECT date_part('day', TIMESTAMP '2001-02-16 20:38:40');
 date_part 
-----------
        16
(1 row)

1
2
3
4
5
 
SELECT date_part('hour', interval '4 hours 3 minutes');
 date_part 
-----------
         4
(1 row)