The HTML5 mathematical operators are used for mathematical and technical operators’ representation in an HTML document. So, to use such operators to web page, we use HTML entity name. If no entity name exists then you can use entity number which is a decimal or a hexadecimal reference.SyntaxFollowing is the ... Read More

As stated in the official docs −KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can also be specified as just KEY when given in a column definition. This was implemented for compatibility with other database systems.Let us first create a table −mysql> create table DemoTable ( ... Read More

Let us first create a table −mysql> create table DemoTable (    Title text ); Query OK, 0 rows affected (0.66 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('MySQL'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('MongoDB\'s'); Query OK, 1 ... Read More

Let us first create a table −mysql> create table DemoTable (    StudentName varchar(40),    StudentMarks int ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John', 78); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable ... Read More

For this, you can use UNION along with the ORDER BY clause. Let us first create a table −mysql> create table DemoTable1 (    Amount int ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1 values(234); Query OK, 1 ... Read More

If there are multiple MySQL keywords in a query, use backticks symbol rather than single quotes. Let us first create a table. Here, we have used two reserved keywords i.e. ‘key’ and ‘Limit’ −mysql> create table DemoTable (    `key` int NOT NULL AUTO_INCREMENT PRIMARY KEY ,    `Limit` int ... Read More

To skip records in MySQL SELECT, use OFFSET. Let us first create a table−mysql> create table DemoTable (    Name varchar(40) ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris'); Query OK, 1 row affected (0.22 sec) mysql> ... Read More

To speed up SELECT DISTINCT, you can create an index on the column or set of columns. Let us first create a table −mysql> create table DemoTable (    Name varchar(40) ); Query OK, 0 rows affected (1.13 sec)Following is the query to create an index −mysql> create index Name_Index ... Read More

Let us first create a table −mysql> create table DemoTable (    Cost int,    Quantity int ); Query OK, 0 rows affected (0.80 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(65, 2); Query OK, 1 row affected (0.08 sec) mysql> insert into DemoTable ... Read More

For this, you can use the LIKE operator along with CONCAT() function. Let us first create a table −mysql> create table DemoTable (    Value text ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('MySQL'); Query OK, 1 ... Read More