Found 4219 Articles for MySQLi

Set a specific Date Format in MySQL?

Nishtha Thakur
Updated on 30-Jul-2019 22:30:26

110 Views

To set a pecific date format, you need to use DATE_FORMAT() in MySQL. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ArrivalDate date ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(ArrivalDate) values('2019-01-31'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(ArrivalDate) values('2019-04-26'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(ArrivalDate) values('2019-03-01'); Query OK, 1 row affected (0.13 sec)Display all ... Read More

Do MySQL Can Enum type values contain spaces in it?

Smita Kapse
Updated on 30-Jul-2019 22:30:26

344 Views

Yes, you can include a string value with spaces in ENUM type. Let us first create a table −mysql> create table DemoTable    (    Size ENUM('SMALL SIZE', 'LARGE SIZE', 'XL SIZE')    ); Query OK, 0 rows affected (0.65 sec)Let us check the description of table using DESC command −mysql> desc DemoTable;This will produce the following output −+-------+-------------------------------------------+------+-----+---------+-------+ | Field | Type                                      | Null | Key | Default | Extra | +-------+-------------------------------------------+------+-----+---------+-------+ | Size  | enum('SMALL SIZE', 'LARGE SIZE', 'XL SIZE') ... Read More

Perform multiplication in SELECT depending on column value in MySQL?

Anvi Jain
Updated on 30-Jul-2019 22:30:26

650 Views

You can use CASE statement for this. Let us first create a table −mysql> create table DemoTable    (    Id int NOT NULL AUTO_INCREMENT PRIMARY KEY,    Value1 int,    Value2 int    ); Query OK, 0 rows affected (0.76 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Value1, Value2) values(10, 5); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable(Value1, Value2) values(20, 0); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(Value1, Value2) values(40, 10); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable(Value1, Value2) ... Read More

Implement GREATEST() in MySQL and update the table?

Nishtha Thakur
Updated on 30-Jul-2019 22:30:26

111 Views

Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Number int ); Query OK, 0 rows affected (0.64 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Number) values(10); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable(Number) values(50); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(Number) values(100); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable(Number) values(190); Query OK, 1 row affected (0.12 sec)Display all ... Read More

MySQL search results by month in format 2015-07-01 11:15:30?

Smita Kapse
Updated on 30-Jul-2019 22:30:26

46 Views

Use MONTH() and YEAR() for this. Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, ShippingDate datetime ); Query OK, 0 rows affected (0.54 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(ShippingDate) values('2019-01-21 10:40:21'); Query OK, 1 row affected (0.20 sec) mysql> insert into DemoTable(ShippingDate) values('2015-07-01 11:15:30'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(ShippingDate) values('2012-12-31 10:45:56'); Query OK, 1 row affected (0.14 sec)Display all records from the table ... Read More

ORDERBY word in MySQL?

Anvi Jain
Updated on 03-Jul-2020 12:01:47

91 Views

To order by word in MySQL, you need to use ORDER BY FIELD(). Let us first create a table −mysql> create table DemoTable (    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    StudentFirstName varchar(20),    StudentFavouriteSubject varchar(100) ); Query OK, 0 rows affected (0.52 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(StudentFirstName, StudentFavouriteSubject) values('Larry', 'Java'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(StudentFirstName, StudentFavouriteSubject) values('Sam', 'C'); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable(StudentFirstName, StudentFavouriteSubject) values('Bob', 'MongoDB'); Query OK, 1 row affected (0.17 sec) mysql> ... Read More

Create a stored Procedures using MySQL Workbench?

Nishtha Thakur
Updated on 30-Jul-2019 22:30:26

2K+ Views

Let us first create a Stored Procedure. Following is the query to create a stored procedure using MySQL Workbench.use business; DELIMITER // DROP PROCEDURE IF EXISTS SP_GETMESSAGE; CREATE PROCEDURE SP_GETMESSAGE() BEGIN DECLARE MESSAGE VARCHAR(100); SET MESSAGE="HELLO"; SELECT CONCAT(MESSAGE, ' ', 'MYSQL!!!!'); END // DELIMITER ;Here is the screenshot of stored procedure in MySQL workbench −You need to execute the above stored procedure with the help of below symbol shown in the screenshot −Now you can call the stored procedure with the help of CALL command.call SP_GETMESSAGE();The screenshot is as follows −Now again you can execute the above statement with the ... Read More

How can I remove a value from an enum in MySQL?

Smita Kapse
Updated on 30-Jul-2019 22:30:26

761 Views

Use ALTER command to remove a value from an enum in MySQL. Let us first create a table −mysql> create table DemoTable    (    `Rank` ENUM('LOW', 'MEDIUM', 'HIGH')    ); Query OK,  0 rows affected (0.52 sec)Let us check the description of table.mysql> DESC DemoTable;This will produce the following output −+-------+-----------------------------+------+-----+---------+-------+ | Field | Type                        | Null | Key | Default | Extra | +-------+-----------------------------+------+-----+---------+-------+ | Rank  | enum('LOW', 'MEDIUM', 'HIGH') | YES  |     | NULL    |       | +-------+-----------------------------+------+-----+---------+-------+ 1 row in set (0.00 sec)Following is the query to remove a ... Read More

What is the Java equivalent to MySQL's smallint?

Anvi Jain
Updated on 30-Jul-2019 22:30:26

2K+ Views

The short is equivalent to MySQL’s small int. The Java short takes 2 bytes that has the range -32768 to 32767 while MySQL smallint also take 2 bytes with same range.Here is the demo code of short in Java −public class SmallIntAsShortDemo {    public static void main(String[] args) {       short value = 32767;       System.out.println(value);       value = -32768;       System.out.println(value);       // value = 32768;       // System.out.println(value);    } }The snapshot is as follows −This will produce the following output −32767 -32768Here is the snapshot of the output we ran in EclipseIDE −The MySQL smallint takes 2 bytes with same range.

Take off last character if a specific one exists in a string?

Nishtha Thakur
Updated on 30-Jul-2019 22:30:26

129 Views

You can use trim() for this.Let us first create a table −mysql> create table DemoTable    (    UserId varchar(100)    ); Query OK, 0 rows affected (0.63 sec)Insert some records in the table using insert command. Here, we have added a question mark (?) to the end of some of the strings −mysql> insert into DemoTable values('User123?'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('User777'); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values('User456'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('User133?'); Query OK, 1 ... Read More

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