For this, use GROUP BY clause along with aggregate function SUM(). Let us first create a table −mysql> create table DemoTable(    Name varchar(100),    Score int ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Adam', 50); Query ... Read More

Let us first create a table −mysql> create table DemoTable(    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    CustomerName varchar(100) ); Query OK, 0 rows affected (0.51 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(CustomerName) values('Adam Smith'); Query OK, 1 row affected (0.17 sec) ... Read More

For this, you can use CASE statement. Let us first create a table −mysql> create table DemoTable(    Id int,    Value int ); Query OK, 0 rows affected (0.51 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, 100); Query OK, 1 row affected ... Read More

Let us first create a table −mysql> create table DemoTable(    EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    EmployeeName varchar(100),    JoiningDate date ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(EmployeeName, JoiningDate) values('Chris', '2019-01-21'); Query OK, 1 ... Read More

Let us first create a table −mysql> create table DemoTable(    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Name varchar(100) ); Query OK, 0 rows affected (0.47 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Name) values('John'); Query OK, 1 row affected (0.10 sec) mysql> ... Read More

The statement SELECT TRUE returns 1 if a row match. Let us first create a table −mysql> create table DemoTable(Name varchar(100)); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris'); Query OK, 1 row affected (0.15 sec) mysql> insert ... Read More

Let us first create a table −mysql> create table DemoTable(GetSundayDate date); Query OK, 0 rows affected (0.44 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-08-07'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('2018-09-05'); Query OK, 1 row affected (0.22 sec) ... Read More

To convert varchar to unsigned integer, use CAST() function. Let us first create a table −mysql> create table DemoTable868(Amount varchar(100)); Query OK, 0 rows affected (0.51 sec)Insert some records in the table using insert command −mysql> insert into DemoTable868 values('781'); Query OK, 1 row affected (0.18 sec) mysql> insert into ... Read More

For this, use LIMIT and OFFSET. Let us first create a table −mysql> create table DemoTable867(EmployeeSalary int); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable867 values(63737); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable867 values(899833); Query ... Read More

For this, use CASE statement and set for both SUM and SUBTRACTION. Let us first create a table −mysql> create table DemoTable866(    Status varchar(100),    Amount int ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> insert into DemoTable866 values('ACTIVE', 50); ... Read More