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What MySQL returns on passing an invalid string as an argument to STR_TO_DATE() function?
If we pass an invalid string as an argument to STR_TO_DATE() function then MySQL will return NULL as output along with a warning. Following is an example to understand the same −
mysql> Select STR_TO_DATE('20173210', '%Y%d%m');
+-----------------------------------+
| STR_TO_DATE('20173210', '%Y%d%m') |
+-----------------------------------+
| NULL |
+-----------------------------------+
1 row in set, 1 warning (0.00 sec)In the query above the string value is invalid because of wrong (32) day value. Hence it returns NULL values and a warning which is given below.
mysql> Show warnings\G *************************** 1. row *************************** Level: Warning Code: 1411 Message: Incorrect datetime value: '20173210' for function str_to_date 1 row in set (0.00 sec)
Updated on: 30-Jan-2020
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