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doris/docs/en/sql-reference/sql-functions/date-time-functions/str_to_date.md
Mingyu Chen 5166a6c6bc [Bug] function str_to_date()'s behavior on BE and FE is inconsistent (#4495)
Main CL:
1. Copy the code from BE to implement the `str_to_date()` function in FE. 
2. `str_to_date("2020-08-08", "%Y-%m-%d %H:%i:%s")` will return `2020-08-08 00:00:00` instead of `2020-08-08`.
2020-09-03 17:16:19 +08:00

2.5 KiB

title, language
title language
Str_to_date en

Str_to_date

Description

Syntax

'DATETIME STR TWO DATES (VARCHAR STR, VARCHAR format)'

Convert STR to DATE type by format specified, if the conversion result does not return NULL

The format format supported is consistent with date_format

example

mysql> select str_to_date('2014-12-21 12:34:56', '%Y-%m-%d %H:%i:%s');
+---------------------------------------------------------+
| str_to_date('2014-12-21 12:34:56', '%Y-%m-%d %H:%i:%s') |
+---------------------------------------------------------+
| 2014-12-21 12:34:56                                     |
+---------------------------------------------------------+

mysql> select str_to_date('2014-12-21 12:34%3A56', '%Y-%m-%d %H:%i%%3A%s');
+--------------------------------------------------------------+
| str_to_date('2014-12-21 12:34%3A56', '%Y-%m-%d %H:%i%%3A%s') |
+--------------------------------------------------------------+
| 2014-12-21 12:34:56                                          |
+--------------------------------------------------------------+

mysql> select str_to_date('200442 Monday', '%X%V %W');
+-----------------------------------------+
| str_to_date('200442 Monday', '%X%V %W') |
+-----------------------------------------+
| 2004-10-18                              |
+-----------------------------------------+

mysql> select str_to_date("2020-09-01", "%Y-%m-%d %H:%i:%s");
+------------------------------------------------+
| str_to_date('2020-09-01', '%Y-%m-%d %H:%i:%s') |
+------------------------------------------------+
| 2020-09-01 00:00:00                            |
+------------------------------------------------+
1 row in set (0.01 sec)

keyword

STR_TO_DATE,STR,TO,DATE