Found 4219 Articles for MySQLi

Working with MySQL WHERE.. OR query with multiple OR usage. Is there an alternative?

AmitDiwan
Updated on 26-Aug-2019 08:02:28

116 Views

Yes, an alternative for MySQL “WHERE.. OR” is using REGEXP.Let us first create a table −mysql> create table DemoTable684(EmployeeInformation text); Query OK, 0 rows affected (0.68 sec)Insert some records in the table using insert command −mysql> insert into DemoTable684 values('John 21 Google'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable684 values('Carol 23 Amazon'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable684 values('Carol 26 Flipkart'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable684 values('David 29 Microsoft'); Query OK, 1 row affected (0.18 sec)Display all records from the table using select statement −mysql> ... Read More

How to write a MySQL query to select first 10 records?

AmitDiwan
Updated on 26-Aug-2019 07:44:50

958 Views

To select first 10 records, we can first order the records in ascending or descending order. With that, use LIMIT 10 to get only 10 records −select *from (select *from yourTableName ORDER BY yourColumnName ASC LIMIT 10)anyAliasName ORDER BY yourColumnName DESC;Let us first create a table −mysql> create table DemoTable683(Page int); Query OK, 0 rows affected (0.83 sec)Insert some records in the table using insert command −mysql> insert into DemoTable683 values(100); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable683 values(101); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable683 values(102); Query OK, 1 row affected ... Read More

Use NOT IN, OR and IS NULL in the same MySQL query to display filtered records

AmitDiwan
Updated on 26-Aug-2019 07:41:36

63 Views

Let us first create a table −mysql> create table DemoTable793(    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    StudentName varchar(100) ); Query OK, 0 rows affected (0.81 sec)Insert some records in the table using insert command −mysql> insert into DemoTable793(StudentName) values('Adam'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable793(StudentName) values('Bob'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable793(StudentName) values(null); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable793(StudentName) values('Chris'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable793(StudentName) values('Robert'); Query OK, 1 row affected (1.03 sec)Display all records from ... Read More

Concatenate string with numbers in MySQL?

AmitDiwan
Updated on 26-Aug-2019 07:34:42

1K+ Views

To concatenate string with numbers, use the CONCAT() method. Let us first create a table −mysql> create table DemoTable682(    Name varchar(100),    Age int ); Query OK, 0 rows affected (0.49 sec)Insert some records in the table using insert command −mysql> insert into DemoTable682 values('John', 23); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable682 values('Chris', 21); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable682 values('David', 25); Query OK, 1 row affected (0.17 sec) Display all records from the table using select statement:Display all records from the table using select statement -mysql> select *from ... Read More

Select the date records between two dates in MySQL

AmitDiwan
Updated on 26-Aug-2019 07:31:39

1K+ Views

To select the date records between two dates, you need to use the BETWEEN keyword. Let us first create a table −mysql> create table DemoTable681(AdmissionDate datetime); Query OK, 0 rows affected (0.75 sec)Insert some records in the table using insert command −mysql> insert into DemoTable681 values('2019-01-21'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable681 values('2019-11-01'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable681 values('2019-12-03'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable681 values('2019-07-03'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable681 values('2019-02-04'); Query OK, 1 row affected (0.34 ... Read More

How to order return duplicate column values only once in MySQL?

AmitDiwan
Updated on 26-Aug-2019 07:24:03

106 Views

To return a column value only once in MySQL, let us first see an example and create a table −mysql> create table DemoTable680(Status varchar(100)); Query OK, 0 rows affected (0.75 sec)Insert some records in the table using insert command −mysql> insert into DemoTable680 values('Busy'); Query OK, 1 row affected (0.36 sec) mysql> insert into DemoTable680 values('At Work'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable680 values('Busy'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable680 values('Blocked'); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable680 values('Offline'); Query OK, 1 row affected (0.67 sec) ... Read More

How to order records and fetch some using MySQL LIMIT?

AmitDiwan
Updated on 26-Aug-2019 07:16:39

77 Views

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

Order by date set with varchar type in MySQL

AmitDiwan
Updated on 26-Aug-2019 07:13:10

460 Views

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

MySQL ORDER BY with custom field value

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

317 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 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

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

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

431 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, 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

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