Yes, use AUTO_INCREMENT with PRIMARY KEY. Let us first create a table −mysql> create table DemoTable (    EmployeeId int NOT NULL AUTO_INCREMENT,    EmployeeName varchar(40),    EmployeeAge int,    PRIMARY KEY(EmployeeId),    UNIQUE KEY(EmployeeName, EmployeeAge) ); Query OK, 0 rows affected (0.96 sec)Let us check the table description of ... Read More

For this, you can use a subquery. Let us first create a table −mysql> create table DemoTable (    Score int ); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(80); Query OK, 1 row affected (0.13 sec) mysql> ... Read More

For this, use the GROUP BY HAVING clause. Let us first create a table −mysql> create table DemoTable (    Value int ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(88); Query OK, 1 row affected (0.22 sec) ... Read More

To count comma-separated-values, use aggregate function COUNT(*) along with FIND_IN_SET(). Let us first create a table −mysql> create table DemoTable (    Value varchar(100) ); Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('10, 20, 60, 80'); Query OK, ... Read More

For this, use the INSERT() function from MySQL. The INSERT(str, pos, len, newstr) returns the string str, with the substring beginning at position pos and len characters long replaced by the string newstr. Returns the original string if pos is not within the length of the string.It replaces the rest ... Read More

Let us first create a table −mysql> create table DemoTable (    Name varchar(40),    Score int ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Adam', 89); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable ... Read More

For this, you can use subquery. Let us first create a table −mysql> create table DemoTable (    StudentName varchar(40),    StudentMarks int ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Adam', 56); Query OK, 1 row affected ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FileID int ) AUTO_INCREMENT=100; Query OK, 0 rows affected (1.36 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(FileID) values(50); Query OK, 1 row affected (0.17 ... Read More

Use CREATE TABLE IF NOT EXISTS for this as shown in the below syntax −create table if not exists yourTableName (    yourColumnName1 dataType,    yourColumnName2 dataType,    yourColumnName3 dataType,    .    .    N ) as select yourValue1 as yourColumnName1 , yourValue2 as yourColumnName2 , yourValue3 as yourColumnName3, ... Read More

Let us first create a table −mysql> create table DemoTable (    CustomerId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    ProductAmount int,    CustomerCountryName varchar(10) ); Query OK, 0 rows affected (0.86 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(ProductAmount, CustomerCountryName) values(190, 'US'); Query OK, ... Read More