For this, use the CASE WHEN statement. Let us first create a table −mysql> create table DemoTable1040 (    Value1 int,    Value2 int,    Value3 int ); Query OK, 0 rows affected (0.65 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1040 values(10, 30, 1); ... Read More

To get the left substring, use LEFT() along with substring_index(). For example, let’s say the file path is −“/MyFile/JavaProgram/Hello.java “Here, we will see how to display the entire file path except for the file name i.e. −/MyFile/JavaProgram/Let us first create a table −mysql> create table DemoTable (    FileLocation text ... Read More

To get the fourth-highest value, use LIMIT OFFSET along with ORDER BY. Let us first create a table −mysql> create table DemoTable (    Amount int ); Query OK, 0 rows affected (0.88 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(980); Query OK, 1 ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    FirstName varchar(100),    LastName varchar(100) ); Query OK, 0 rows affected (1.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(FirstName, LastName) values('David', 'Miller'); Query OK, ... Read More

To suppress warnings, set SQL_NOTES=0. Let us see an example.At first, we will set SQL_NOTES to 1 −mysql> SET sql_notes = 1; Query OK, 0 rows affected (0.00 sec)Now, let us drop a table which does not exist. As you can see a warning message is now visible −mysql> drop ... Read More

For custom order, use ORDER BY FIELD(). Let us first create a table −mysql> create table DemoTable (    Title varchar(100) ); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Java_1+'); Query OK, 1 row affected (0.14 sec) mysql> ... Read More

Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Name varchar(100),    Score int ); Query OK, 0 rows affected (1.10 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Name, Score) values('John', 45); Query OK, ... Read More

For this, you can use the INTERVAL 7 day concept. Let us first create a table −mysql> create table DemoTable (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    AdmissionDate datetime ); Query OK, 0 rows affected (0.83 sec)Note − Let’s say the current date is 2019-08-23.Insert some records ... Read More

Let us first create a table −mysql> create table DemoTable (    value1 int,    value2 int,    value3 int ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(20, 40, null); Query OK, 1 row affected (0.23 sec) ... Read More

For this, use ORDER BY with a modulus operator. Let us first create a table −mysql> create table DemoTable (    StudentId int,    StudentName varchar(100) ); Query OK, 0 rows affected (1.88 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(100, 'Chris'); Query OK, ... Read More