To select different values on the basis of condition, use CASE statement. 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 (0.54 sec)Insert some records in the table ... Read More

Such errors arise when you avoid using the DELIMITER concept. Let us see an example and run a query for stored procedure −mysql> DELIMITER // mysql> CREATE PROCEDURE correct_procedure()    BEGIN    SELECT 'Hello MySQL !!!';    END // Query OK, 0 rows affected (0.12 sec) mysql> DELIMITER ;Following is ... Read More

To set new delay time, use INTERVAL and update the column wth SETa clause and UPDATE command. Let us first create a table −mysql> create table DemoTable (    DelayTime time ); Query OK, 0 rows affected (1.21 sec)Insert some records in the table using insert command −mysql> insert into ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY ,    Title text ); Query OK, 0 rows affected (0.88 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Title) values('This is; a; MySQL;Tutorial'); Query OK, 1 ... Read More

To add characters to an existing int column values, use MySQL CONCAT(). Let us first create a table −mysql> create table DemoTable (    Amount int ); Query OK, 0 rows affected (1.44 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(709); Query OK, 1 ... Read More

To pull records for the last 60 minutes, use MySQL INTERVAL as shown in the below syntax −select *from yourTableName where yourColumnName > now() - interval 60 minute;Let us first create a table −mysql> create table DemoTable (    ArrivalTime datetime ); Query OK, 0 rows affected (0.61 sec)Let us ... Read More

For selective multiple records, use MySQL IN(). To delete them, use MySQL DELETE. Let us first create a table −mysql> create table DemoTable (    ClientId varchar(40),    ClientName varchar(50) ); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable ... Read More

For this, use CONCAT() along with LIKE operator. Let us first create a table −mysql> create table DemoTable (    Name varchar(40) ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('John'); Query OK, 1 row affected (0.33 sec) ... Read More

Let us first see how we can perform NAND/NOR operations in MySQL. The concept is as follows −NAND= NOT( yourColumnName1 AND yourColumnName2) NOR=NOT( yourColumnName1 OR yourColumnName2)Let us first create a table −mysql> create table DemoTable (    Value1 boolean ,    Value2 boolean ); Query OK, 0 rows affected (0.72 ... Read More

Let us first create a table −mysql> create table DemoTable (    BookingDate date ); Query OK, 0 rows affected (0.67 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-09-21'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable values('2018-09-10'); Query OK, 1 ... Read More