Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How can MySQL interpret the number and string, having no delimiter, as a date?
If a string or number, even without any delimiter, in the format of YYYYMMDDHHMMSS or YYMMDDHHMMSS is making sense as the date is provided then MySQL interpret that string as a valid date.
Examples are given for valid as well as invalid dates −
mysql> Select Timestamp(20171022040536);
+---------------------------+
| Timestamp(20171022040536) |
+---------------------------+
| 2017-10-22 04:05:36 |
+---------------------------+
1 row in set (0.00 sec)
mysql> Select Timestamp('20171022040536');
+-----------------------------+
| Timestamp('20171022040536') |
+-----------------------------+
| 2017-10-22 04:05:36 |
+-----------------------------+
1 row in set (0.00 sec)
mysql> Select Timestamp('171022040536');
+---------------------------+
| Timestamp('171022040536') |
+---------------------------+
| 2017-10-22 04:05:36 |
+---------------------------+
1 row in set (0.00 sec)Above queries shows the examples of valid string as well number which can be interpreted as date values by MySQL.
mysql> Select Timestamp('20171022048536');
+-----------------------------+
| Timestamp('20171022048536') |
+-----------------------------+
| NULL |
+-----------------------------+
1 row in set, 1 warning (0.00 sec)Above query is the example for the invalid string. MySQL returns NULL because the string is having wrong value (85) for a minute.
mysql> Select Timestamp('20171322040536');
+-----------------------------+
| Timestamp('20171322040536') |
+-----------------------------+
| NULL |
+-----------------------------+
1 row in set, 1 warning (0.00 sec)In above query, MySQL returns NULL because the string is having wrong value (13) for a month.
Updated on: 29-Jan-2020
160 Views
Advertisements