For this, use the CAST() method in MySQL. Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    StudentHeight varchar(40) ) ; Query OK, 0 rows affected (0.47 sec)Insert some records in the table using insert command −mysql> insert into ... Read More

For this, use GROUP BY along with COUNT(*). Let us first create a table −mysql> create table DemoTable (    EmployeeId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    EmployeeGender varchar(40) ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(EmployeeGender) ... Read More

Let us first create a table −mysql> create table DemoTable (    DueDate varchar(100) ); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('August 04, 2019'); Query OK, 1 row affected (0.25 sec)Display all records from the table using ... Read More

You can truncate the table to set auto_increment value to start from 1 in MySQL. Let us first create a table −mysql> create table DemoTable (    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY ); Query OK, 0 rows affected (1.44 sec)Insert some records in the table using insert command ... Read More

No, ^ is the Bitwise XOR operator in MySQL. For this, use POW() or POWER() from MySQL. Let us first create a table &minuns;mysql> create table DemoTable (    BaseValue int,    PowerValue float ); Query OK, 0 rows affected (0.48 sec)Insert some records in the table using insert command ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    CustomerName varchar(20),    ProductPrice int ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(CustomerName, ProductPrice) values('Chris', 600); Query OK, ... Read More

For this, you can use GROUP_CONCAT(). You also need to use DISTINCT to fetch distinct records. Let us first create a table −mysql> create table DemoTable(    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Name varchar(40),    Score int ); Query OK, 0 rows affected (0.53 sec)Insert some records ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    PurchaseDate date,    SalePrice int ); Query OK, 0 rows affected (0.51 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(PurchaseDate, SalePrice) values('2018-01-10', 450); Query OK, ... Read More

No, MySQL UPDATE won’t overwrite values if they are identical. Let us first create a table −mysql> create table DemoTable (    StudentId int,    StudentMathMarks int,    StudentMySQLMarks int ); Query OK, 0 rows affected (0.46 sec)Insert some records in the table using insert command −mysql> insert into DemoTable ... Read More

To count, use the MySQL COUNT(*). However, with UNION ALL you would be able to get a combined count of string. Let us first create a table −mysql> create table DemoTable1 (    Name varchar(20) ); Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert ... Read More