Web hosting mysql - Figure 3-9: Dates with timestamps and dates without
Figure 3-9: Dates with timestamps and dates without timestamps. Complex Datatypes Complex datatypes encompass object datatypes. Available object datatypes vary for different relational databases. Some relational databases provide more object-relational attributes and functionality than others. Complex datatypes include any datatypes breaching the object-relational database divide including items such as binary objects, reference pointers, collection arrays and even the capacity to create user defined types. Following are some complex datatypes: . Binary objects Purely binary objects were created in relational databases to help separate binary type data from regular relational database table record structures. A large object such as a graphic is so very much larger than the length of an average table record containing all strings SQL> select isbn, print_date AS Printed, 2 to_char(print_date, DD/MM/YYYY HH24:MI:SS ) AS TimeStamp 3 from edition where print_date is not null; ISBN PRINTED TIMESTAMP 893402095 345308999 345336275 5557076654 5553673224 246118318 345334787 449208133 345323440 345333926 425130215 31-MAY-79 28-FEB-83 31-JUL-86 31-JAN-51 31-JAN-20 28-APR-83 31-DEC-85 31-MAY-85 31-JUL-96 30-NOV-90 30-NOV-91 31/05/1979 00:12:01 28/02/1983 04:55:03 31/07/1986 03:44:33 31/01/1951 09:41:00 31/01/2020 22:15:20 28/04/1983 10:17:10 31/12/1985 08:13:45 31/05/1985 00:01:12 31/07/1996 03:00:30 30/11/1990 21:04:40 30/11/1991 16:43:53 Database specific format Timestamp format 46 Chapter 3
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