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For this, use UPDATE command along with CASE statement. Let us first create a table −mysql> create table DemoTable1925 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(20), StudentMarks int ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1925(StudentName, StudentMarks) values('Chris', 98); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1925(StudentName, StudentMarks) values('David', 45); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * from DemoTable1925;This will produce the following output −+-----------+-------------+--------------+ | ... Read More
To update records with a specific year, use the YEAR() method as in the below syntax:update yourTableName set yourColumnName1=yourValue1 where YEAR(str_to_date(yourColumnName2, '%d/%m/%Y'))=yourValue2;Let us first create a table −mysql> create table DemoTable1924 ( UserName varchar(20), UserJoiningDate varchar(40) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1924 values('Chris', '10/12/2010'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1924 values('David', '20/01/2011'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1924 values('Mike', '20/01/2010'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1924 values('Carol', ... Read More
The mouseup() method in jQuery is used to trigger the mouseup event. The event occurs when the left mouse button is releases over the selected element.SyntaxThe syntax is as follows−$(selector).mousedown(func)Above, func is the function to run when mouseup event triggers.ExampleLet us now see an example to implement the jQuery mouseup() method − Live Demo $(document).ready(function(){ $("h2").mouseup(function(){ $(this).after("Mouse up (mouse button is released)."); }); $("h2").mousedown(function(){ $(this).after("Mouse down (mouse button is pressed down)."); }); }); ... Read More
Let us create a table −mysql> create table DemoTable1923 ( UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserName varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1923(UserId, UserName) select 101 as UserId, 'Chris' as UserName; Query OK, 1 row affected (0.00 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> insert into DemoTable1923(UserId, UserName) select 102 as UserId, 'Robert' as UserName; Query OK, 1 row affected (0.00 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> insert into DemoTable1923(UserId, UserName) ... Read More
Let us create a table −mysql> create table DemoTable1922 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(20) ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1922(StudentName) values('Chris'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1922(StudentName) values('Robert'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1922(StudentName) values('David'); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1922(StudentName) values('Mike'); Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −mysql> select * from DemoTable1922;This ... Read More
For random rows, you can use RAND(), whereas to fix a specific column, use ORDER BY clause. Let us create a table −mysql> create table DemoTable1921 ( Number int ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1921 values(40); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1921 values(80); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1921 values(820); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1921 values(10); Query OK, 1 row affected (0.00 sec)Display all records from the ... Read More
To group marks, use MySQL GROUP BY. To sum, use MySQL sum()function. Let us first create a table −mysql> create table DemoTable1920 ( StudentName varchar(20), StudentMarks int ); Query OK, 0 rows affected (0.00 sec)Insert some records in the table using insert command −mysql> insert into DemoTable1920 values('Chris', 67); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1920 values('David', 97); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1920 values('Chris', 57); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1920 values('David', 45); Query OK, 1 row affected (0.00 sec) mysql> ... Read More
You can use DECLARE in a stored procedure. The syntax is as follows −declare yourVariableName yourDataType;To understand the above syntax, let us create a stored procedure:mysql> delimiter // mysql> create procedure square_demo(in Value int) begin declare magicValue int; set magicValue=Value; select concat('Your Square Value=',magicValue*magicValue) as Output; end ; // Query OK, 0 rows affected (0.00 sec) mysql> delimiter ;Now you can call a stored procedure using call command −mysql> call square_demo(15);This will produce the following output −+-----------------------+ | Output | +-----------------------+ | Your Square Value=225 | +-----------------------+ 1 row in set (0.00 sec) Query OK, 0 rows affected (0.00 sec)
Filtering methods in jQuery include eq(), filter(), not(), etc. Let us see some of them here−not() methodThe not() method in jQuery is used to return elements that do not match specific criteria.ExampleLet us see an example to implement the jQuery not() method− Live Demo $(document).ready(function(){ $("button").click(function(){ $("h2").not(".demo").css("color", "orange"); }); }); h2 { color: blue; } Student Info This is a demo text. Exam Info This is a demo text. Teacher's Info This is a demo text. Click me OutputThis ... Read More
To fix the error, let us see how to create a user correctly. Let us create a user −mysql> create user 'Emma'@'localhost' IDENTIFIED BY 'emma_654'; Query OK, 0 rows affected (0.00 sec)Let us display all users along with host −mysql> select user, host from MySQL.user;This will produce the following output. The new user created above is visible in the below list of all users along with host −+------------------+-----------+ | user | host | +------------------+-----------+ | Bob | % | | Charlie ... Read More