Update MySQL table column by matching date using date() function?

Following is the syntax to match date with date() function and updating a column −

update yourTableName set yourColumnName=yourValue where date(yourColumnName)=curdate();

Let us first create a table −

mysql> create table DemoTable1816      (      Name varchar(20),      JoiningDate datetime      ); Query OK, 0 rows affected (0.00 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1816 values('Chris','2019-11-29 12:34:50'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1816 values('David','2019-11-30 11:00:00'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1816 values('Mike','2018-11-30 10:20:30'); Query OK, 1 row affected (0.00 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1816;

This will produce the following output −

+-------+---------------------+ | Name  | JoiningDate         | +-------+---------------------+ | Chris | 2019-11-29 12:34:50 | | David | 2019-11-30 11:00:00 | | Mike  | 2018-11-30 10:20:30 | +-------+---------------------+ 3 rows in set (0.00 sec)

Here is the query to update a column by matching date −

mysql> update DemoTable1816 set Name='Robert' where date(JoiningDate)=curdate(); Query OK, 1 row affected (0.00 sec) Rows matched: 1  Changed: 1 Warnings: 0

Let us check the table records once again −

mysql> select * from DemoTable1816;

This will produce the following output −

+--------+---------------------+ | Name   | JoiningDate         | +--------+---------------------+ | Chris  | 2019-11-29 12:34:50 | | Robert | 2019-11-30 11:00:00 | | Mike   | 2018-11-30 10:20:30 | +--------+---------------------+ 3 rows in set (0.00 sec)