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Let’s say the current date is 2019-08-03. Now, we will see an example and create a table −mysql> create table DemoTable840(DueDate datetime); Query OK, 0 rows affected (0.66 sec)Insert some records in the table using insert command −mysql> insert into DemoTable840 values('2019-08-9'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable840 values('2019-07-5'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable840 values('2019-08-10'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable840 values('2019-07-13'); Query OK, 1 row affected (0.10 sec)Display all records from the table using select statement −mysql> select *from DemoTable840;This will produce the ... Read More
To sum, you can use aggregate function SUM(). Let us first create a table −mysql> create table DemoTable850( Id int, Price int ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable850 values(1, 90); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable850 values(2, 100); Query OK, 1 row affected (0.55 sec) mysql> insert into DemoTable850 values(2, 50); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable850 values(1, 80); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable850 values(1, 60); Query OK, ... Read More
The current date format is ‘YYYY-mm-dd’. To change current date format, you can use date_format().Let us first display the current date −mysql> select curdate();This will produce the following output −+------------+ | curdate() | +------------+ | 2019-08-08 | +------------+ 1 row in set (0.00 sec)Following is the query to change curdate() (current date) format −mysql> select date_format(curdate(), '%m/%d/%Y');This will produce the following output −+------------------------------------+ | date_format(curdate(), '%m/%d/%Y') | +------------------------------------+ | 08/08/2019 | +------------------------------------+ 1 row in set (0.00 sec)Let us first create a table −mysql> create table DemoTable ... Read More
For this, use aggregate function SUM(). Within this method, multiply the row values. Let us first create a table −mysql> create table DemoTable( ProductQuantity int, ProductPrice int ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, 9); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(6, 20); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(7, 100); Query OK, 1 row affected (0.08 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following ... Read More
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 OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Bob', 80); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Adam', 70); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('Adam', 10); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('Carol', ... 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) mysql> insert into DemoTable(CustomerName) values('Chris Brown'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(CustomerName) values('David Miller'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(CustomerName) values('Carol Taylot'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(CustomerName) values('Carol Taylor'); Query OK, 1 row affected ... 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 (0.15 sec) mysql> insert into DemoTable values(10, -110); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(10, 200); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(10, -678); Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −mysql> ... 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 row affected (0.20 sec) mysql> insert into DemoTable(EmployeeName, JoiningDate) values('Robert', '2016-12-01'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(EmployeeName, JoiningDate) values('Mike', '2015-03-12'); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+------------+--------------+-------------+ ... 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> insert into DemoTable(Name) values('Bob'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(Name) values('Adam'); Query OK, 1 row affected (0.28 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+----+------+ | Id | Name | +----+------+ | 1 | ... 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 into DemoTable values('Robert'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('David'); Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+--------+ | Name | +--------+ | Chris | | Robert ... Read More