Let us first create a table −mysql> create table DemoTable679(FirstName varchar(100)); Query OK, 0 rows affected (0.44 sec)Insert some records in the table using insert command −mysql> insert into DemoTable679 values('John'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable679 values('Chris'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable679 values('David'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable679 values('Bob'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable679 values('Mike'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable679 values('Sam'); Query OK, 1 row affected (0.15 sec) mysql> insert ... Read More

For this, use ORDER BY STR_TO_DATE in MySQL as in the below syntax −select *from yourTableName ORDER BY STR_TO_DATE(yourColumnName, '%M %Y') DESC;Let us first create a table −mysql> create table DemoTable678(DueDate varchar(200)); Query OK, 0 rows affected (0.62 sec)Insert some records in the table using insert command. We have inserted dates here −mysql> insert into DemoTable678 values('March 2019'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable678 values('November 2018'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable678 values('January 2019'); Query OK, 1 row affected (0.18 sec)Display all records from the table using select statement −mysql> ... Read More

To set custom field value, use FIND_IN_SET(). Let us first create a table −mysql> create table DemoTable677(    UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    UserStatus text ); Query OK, 0 rows affected (1.07 sec)Insert some records in the table using insert command −mysql> insert into DemoTable677(UserStatus) values('BUSY'); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable677(UserStatus) values('AT WORK'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable677(UserStatus) values('OFFLINE'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable677(UserStatus) values('BLOCKED'); Query OK, 1 row affected (0.17 sec)Display all records from the table using select ... Read More

The CONCAT() method would be used to concatenate “MR” to every string, whereas GROUP_CONCAT() to concatenate some of the column values in a single line.Let us first see an example and create a table −mysql> create table DemoTable799(    UserId int,    UserName varchar(100),    UserAge int ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable799 values(101, 'John', 21); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable799 values(102, 'Chris', 26); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable799 values(101, 'Robert', 23); Query OK, ... Read More

Let us first create a table −mysql> create table DemoTable676(    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Number int ); Query OK, 0 rows affected (0.50 sec)Insert some records in the table using insert command −mysql> insert into DemoTable676(Number) values(1000); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable676(Number) values(1839); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable676(Number) values(29894); Query OK, 1 row affected (0.30 sec) mysql> insert into DemoTable676(Number) values(1264); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable676(Number) values(190); Query OK, 1 row affected (0.17 sec) mysql> insert into ... Read More

To search within a table of comma-separated values, use LIKE operator. Let us first create a table −mysql> create table DemoTable675(Value text); Query OK, 0 rows affected (0.55 sec)Insert some records in the table using insert command −mysql> insert into DemoTable675 values('10, 56, 49484, 93993, 211, 4594'); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable675 values('4, 7, 1, 10, 90, 23'); Query OK, 1 row affected (0.41 sec) mysql> insert into DemoTable675 values('90, 854, 56, 89, 10'); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable675 values('11, 22, 344, 67, 89'); Query OK, 1 row ... Read More

Yes, we can name columns in an insert statement. Let us first create a table −mysql> create table DemoTable674(    StudentId int,    StudentFirstName varchar(100),    StudentLastName varchar(100)  ); Query OK, 0 rows affected (0.82 sec)Insert some records in the table using insert command −mysql> insert into DemoTable674 set StudentId=10, StudentFirstName='John', StudentLastName='Smith'; Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable674 set StudentId=11, StudentFirstName='Carol', StudentLastName='Taylor'; Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable674 set StudentId=12, StudentFirstName='David', StudentLastName='Miller'; Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable674 set StudentId=13, StudentFirstName='Chris', StudentLastName='Brown'; Query OK, 1 ... Read More

For this, use GROUP BY HAVING clause. Let us first create a table −mysql> create table DemoTable673(    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Value int ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable673(Value) values(10); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable673(Value) values(20); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable673(Value) values(10); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable673(Value) values(30); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable673(Value) values(20); Query OK, 1 ... Read More

For this, use order by nullif(). Let us first create a table −mysql> create table DemoTable672(    CustomerId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    CustomerName varchar(100),    CustomerAmount int ); Query OK, 0 rows affected (0.81 sec)Insert some records in the table using insert command −mysql> insert into DemoTable672(CustomerName, CustomerAmount) values('Chris', 560); Query OK, 1 row affected (0.51 sec) mysql> insert into DemoTable672(CustomerName, CustomerAmount) values('Robert', null); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable672(CustomerName, CustomerAmount) values('', 450); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable672(CustomerName, CustomerAmount) values('David', 456); Query OK, 1 row affected ... Read More

For particular type of columns beginning with a certain letter, use LIKE. To concatenate the column names, use GROUP_CONCAT() as in the below syntax −SELECT group_concat(COLUMN_NAME separator ' , ') FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = "yourTableName" AND table_schema = "yourDatabaseName" AND column_name LIKE "yourSpecificLetter%";Let us first create a table −mysql> create table DemoTable671(    ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    ClientName varchar(100),    ClientAge int,    ClientAddress varchar(200),    ClientCountryName varchar(100) ); Query OK, 0 rows affected (0.62 sec)Following is the query to select particular type of columns beginning with a certain letter and fetch all the column ... Read More