AmitDiwan has Published 10740 Articles

MySQL ORDER BY with custom field value

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 07:08:35

476 Views

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 ... Read More

Concatenate some of the column values in a single line with MySQL and prefix a particular string “MR.” to every string

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 07:03:50

603 Views

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, ... Read More

MySql how to display the records with latest ID in a table?

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:53:39

253 Views

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> ... Read More

How can I search within a table of comma-separated values in MySQL?

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:48:43

499 Views

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 ... Read More

Is there a way to name columns in an INSERT statement in MySQL?

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:45:29

106 Views

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, ... Read More

MySQL query to select the values having multiple occurrence and display their count

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:37:17

2K+ Views

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 ... Read More

MySQL Order by with case?

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:15:47

330 Views

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, ... Read More

Select particular type of columns beginning with a certain letter and concatenate the names

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:09:20

133 Views

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> ... Read More

How to sort domain names in MySQL?

AmitDiwan

AmitDiwan

Updated on 26-Aug-2019 06:05:27

139 Views

To sort domain names, use the ORDER BY SUBSTRING_INDEX(). Let us first create a table −mysql> create table DemoTable670(DomainName text); Query OK, 0 rows affected (0.77 sec)Insert some records in the table using insert command. Here, we are inserting domain names −mysql> insert into DemoTable670 values('www.facebook.com'); Query OK, 1 row ... Read More

Convert MySQL date format from yyyy-mm-ddThh:mm:ss.sssZ to yyyy-mm-dd hh:mm:ss ?

AmitDiwan

AmitDiwan

Updated on 23-Aug-2019 14:00:12

3K+ Views

Let us first create a table −mysql> create table DemoTable668(JoiningDate varchar(200)); Query OK, 0 rows affected (0.97 sec)Insert some records in the table using insert command. We have inserted date in the format yyyy-mm-ddThh:mm:ss.sssZ −mysql> insert into DemoTable668 values('2001-01-10T06:20:00.000Z'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable668 ... Read More

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