Change date format from dd mm yyyy to yyyy mm dd in mysql

Use STR_TO_DATE[] method from MySQL to convert. The syntax is as follows wherein we are using format specifiers. The format specifiers begin with %.

SELECT STR_TO_DATE[yourDateColumnName,'%d.%m.%Y'] as anyVariableName FROM yourTableName;

To understand the above syntax, let us create a table. The query to create a table is as follows.

mysql> create table ConvertIntoDateFormat
   -> [
   -> Id int NOT NULL AUTO_INCREMENT,
   -> LoginDate varchar[30],
   -> PRIMARY KEY[Id]
   -> ];
Query OK, 0 rows affected [0.47 sec]

Insert some records in the table using insert command. The query is as follows −

mysql> insert into ConvertIntoDateFormat[LoginDate] values['11.01.2019'];
Query OK, 1 row affected [0.10 sec]

mysql> insert into ConvertIntoDateFormat[LoginDate] values['10.04.2017'];
Query OK, 1 row affected [0.16 sec]

mysql> insert into ConvertIntoDateFormat[LoginDate] values['21.10.2016'];
Query OK, 1 row affected [0.12 sec]

mysql> insert into ConvertIntoDateFormat[LoginDate] values['26.09.2018'];
Query OK, 1 row affected [0.14 sec]

mysql> insert into ConvertIntoDateFormat[LoginDate] values['25.12.2012'];
Query OK, 1 row affected [0.17 sec]

Display all records from the table using select statement. The query is as follows−

mysql> select *from ConvertIntoDateFormat;

The following is the output.

+----+------------+
| Id | LoginDate  |
+----+------------+
|  1 | 11.01.2019 |
|  2 | 10.04.2017 |
|  3 | 21.10.2016 |
|  4 | 26.09.2018 |
|  5 | 25.12.2012 |
+----+------------+
5 rows in set [0.00 sec]

The following is the query to format the date to YYYY-MM-DD.

mysql> select str_to_date[LoginDate,'%d.%m.%Y'] as DateFormat from ConvertIntoDateFormat;

Here is the output.

+------------+
| DateFormat |
+------------+
| 2019-01-11 |
| 2017-04-10 |
| 2016-10-21 |
| 2018-09-26 |
| 2012-12-25 |
+------------+
5 rows in set [0.00 sec]

You can also use DATE_FORMAT[] method for the same purpose. The query is as follows

mysql> select DATE_FORMAT[STR_TO_DATE[LoginDate,'%d.%m.%Y'], '%Y-%m-%d'] as DateFormat from
   -> ConvertIntoDateFormat;

The following is the output−

+------------+
| DateFormat |
+------------+
| 2019-01-11 |
| 2017-04-10 |
| 2016-10-21 |
| 2018-09-26 |
| 2012-12-25 |
+------------+
5 rows in set [0.00 sec]

Updated on 30-Jul-2019 22:30:24

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To convert date from 'dd/mm/yyyy' to 'yyyymmdd', you can use the date_format[] method. Let us first create a table −

mysql> create table DemoTable
[
   Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,
   Admissiondate varchar[200]
];
Query OK, 0 rows affected [0.54 sec]

Insert some records in the table using insert command −

mysql> insert into DemoTable[Admissiondate] values['21/10/2014'];
Query OK, 1 row affected [0.22 sec]
mysql> insert into DemoTable[Admissiondate] values['01/12/2016'];
Query OK, 1 row affected [0.14 sec]
mysql> insert into DemoTable[Admissiondate] values['31/01/2017'];
Query OK, 1 row affected [0.14 sec]

Following is the query to display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+----+---------------+
| Id | Admissiondate |
+----+---------------+
| 1  | 21/10/2014    |
| 2  | 01/12/2016    |
| 3  | 31/01/2017    |
+----+---------------+
3 rows in set [0.00 sec]

Following is the query to convert date from 'dd/mm/yyyy' to 'yyyymmdd' −

mysql> select date_format[str_to_date[Admissiondate,'%d/%m/%Y'],'%Y%m%d'] from DemoTable;

This will produce the following output −

+-------------------------------------------------------------+
| date_format[str_to_date[Admissiondate,'%d/%m/%Y'],'%Y%m%d'] |
+-------------------------------------------------------------+
| 20141021                                                    |
| 20161201                                                    |
| 20170131                                                    |
+-------------------------------------------------------------+
3 rows in set [0.00 sec]

Updated on 30-Jul-2019 22:30:25

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