branch-4.0: [feature](function) The date_add function supports DAY_SECOND as interval type #57253 #57484
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…rval type (#57253) The date_add function supports new type: `DAY_SECOND`, now we can use a string in the format 'day hour:minute:second' as the INTERVAL parameter. ```shell mysql> select DATE_ADD('2025-10-23 10:10:10', INTERVAL '1 01:02:03' DAY_SECOND); +-------------------------------------------------------------------+ | DATE_ADD('2025-10-23 10:10:10', INTERVAL '1 01:02:03' DAY_SECOND) | +-------------------------------------------------------------------+ | 2025-10-24 11:12:13 | +-------------------------------------------------------------------+ 1 row in set (0.01 sec) ``` ```shell mysql> select * from datetime_table; +---------------------+ | datetime | +---------------------+ | 2024-01-15 10:30:00 | | 2024-01-15 14:45:30 | | 2024-01-15 20:15:45 | +---------------------+ 3 rows in set (0.02 sec) mysql> select DATE_ADD(datetime, INTERVAL '1 01:02:03' DAY_SECOND) from datetime_table; +------------------------------------------------------+ | DATE_ADD(datetime, INTERVAL '1 01:02:03' DAY_SECOND) | +------------------------------------------------------+ | 2024-01-16 11:32:03 | | 2024-01-16 15:47:33 | | 2024-01-16 21:17:48 | +------------------------------------------------------+ 3 rows in set (0.01 sec) ``` Co-authored-by: codeDing18 <csding18@qq.com> Issue Number: close #52132
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Cherry-picked from #57253