For this, you need to cast the varchar value to INTEGER.Let us first create a table −mysql> create table DemoTable765 (ItemPrice varchar(200)); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable765 values('567.00'); Query OK, 1 row affected (0.16 sec) mysql> ... Read More

For this, you can use GROUP_CONCAT().Let us first create a table −mysql> create table DemoTable764 (    ProductId int,    ProductPrice int ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable764 values(101, 10000); Query OK, 1 row affected (0.12 ... Read More

To get result from multiple select statements, use UNION ALL. Following is the syntax −select yourValue1 AS anyColumnName UNION ALL select yourValue2 AS yourColumnName . . . . NLet us implement the above syntax in order to return enumeration of numbers in different rows −mysql> select 100 AS Number   ... Read More

To select last two rows, use ORDER BY DESC LIMIT 2.Let us first create a table −mysql> create table DemoTable763 (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FirstName varchar(100) ); Query OK, 0 rows affected (0.57 sec)Insert some records in the table using insert command −mysql> insert ... Read More

For this, you can use LIKE operator with OR condition.Let us first create a table −mysql> create table DemoTable762 (Title text); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable762 values('Introduction to Java'); Query OK, 1 row affected (0.19 sec) ... Read More

The strings (column values) begun with a character and rest of the string has numbers. We want the sum of these numbers −J230 A130s C13For this, use SUBSTRING() function along with SUM().Let us first create a table −mysql> create table DemoTable761 (Price varchar(100)); Query OK, 0 rows affected (0.62 sec)Insert ... Read More

Let us first create a table −mysql> create table DemoTable760 (    ClientId int,    ClientId2 int ); Query OK, 0 rows affected (0.79 sec)Insert some records in the table using insert command −mysql> insert into DemoTable760 values(100, 200); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable760 ... Read More

To set NULL values, set the type as NULL as in the below syntax −yourColumnName dataType NULL;Let us first create a table −mysql> create table DemoTable759 (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FirstName varchar(100) NULL ); Query OK, 0 rows affected (0.72 sec)Insert some records in ... Read More

To set the default value, use the DEFAULT keyword.Let us first create a table −mysql> create table DemoTable758 (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FirstName varchar(100) ); Query OK, 0 rows affected (0.66 sec)Following is the query to set default value for a column −mysql> alter ... Read More

Let’s say you have a VARCHAR column in a table with values are strings and the numbers are on the right side. For example −John1023 Carol9871 David9098Now, consider you want to order by on the basis of these right-side numbers in the entire column. For this, use ORDER BY RIGHT.Let ... Read More