To implement custom sort order in MySQL, you need to use ORDER BY FIELD(). Let us first create a table −mysql> create table DemoTable    -> (    -> Designation varchar(100)    -> ); Query OK, 0 rows affected (1.65 sec)Insert some records in the table using insert command −mysql> ... Read More

To subtract a day in MySQL, use the DATE_SUB() method. Let us first create a table −mysql> create table DemoTable    -> (    -> AdmissionDate timestamp    -> ); Query OK, 0 rows affected (1.05 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-01-01'); ... Read More

No, we cannot. To still work it out, use backticks around the field name. Let us first create a table with column name with asterisk, `Name*` −mysql> create table DemoTable    -> (    -> `Name*` varchar(20)    -> ); Query OK, 0 rows affected (2.03 sec)Insert some records in ... Read More

For this, you can use SOUND along with the LIKE operator. Let us first create a table −mysql> create table DemoTable    -> (    -> Name varchar(20)    -> ); Query OK, 0 rows affected (0.95 sec)Insert some records in the table using insert command −mysql> insert into DemoTable ... Read More

To replace a record that doesn’t exist, use the COALESCE in MySQL. The COALESCE would help in substituting the NULL values. Let us first create a table −mysql> create table DemoTable    -> (    -> Code varchar(20)    -> ); Query OK, 0 rows affected (1.64 sec)Insert some records ... Read More

Let us first create a table −mysql> create table DemoTable    -> (    -> Id int,    -> Name varchar(20)    -> ); Query OK, 0 rows affected (0.82 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(201, 'Chris Brown'); Query OK, 1 row ... Read More

Let us first create a table −mysql> create table DemoTable    -> (    -> Value1 int,    -> Value2 int    -> ); Query OK, 0 rows affected (0.77 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(78, 89); Query OK, 1 row affected ... Read More

For this, you can use CASE WHEN statement. Let us first create a table −mysql> create table DemoTable    -> (    -> FirstName varchar(20),    -> Score int -> ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> ... Read More

Let us first create a table −mysql> create table DemoTable    -> (    -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    -> FirstName varchar(20)    -> ); Query OK, 0 rows affected (0.65 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(FirstName) values('Chris'); Query ... Read More

To find the difference between two datetime values, you can use TIMESTAMPDIFF(). Let us first create a table −mysql> create table DemoTable    -> (    -> DueDatetime1 datetime,    -> DueDatetime2 datetime    -> ); Query OK, 0 rows affected (0.86 sec)Insert some records in the table using insert ... Read More