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If a subquery, used with EXIST operator, returns NULL, the expression EXIST NULL returns TRUE and MySQL returns the result based on an outer query. It can be understood with the help of simple example using the following data from table ‘Customers’ −mysql> Select * from Customers; +-------------+----------+ | Customer_Id | Name | +-------------+----------+ | 1 | Rahul | | 2 | Yashpal | | 3 | Gaurav | | 4 | Virender | +-------------+----------+ 4 rows in ... Read More
If a subquery, used with EXIST operator, returns no rows, the expression EXIST returns FALSE and MySQL returns the empty set as output. It can be understood with the help of simple example using the following data from table ‘Customers’ −mysql> Select * from Customers; +-------------+----------+ | Customer_Id | Name | +-------------+----------+ | 1 | Rahul | | 2 | Yashpal | | 3 | Gaurav | | 4 | Virender | +-------------+----------+ 4 rows in ... Read More
If a subquery is nested inside another subquery then it is called a nested subquery. To make it understand we are creating the nested subquery from the following tables data −mysql> Select * from Cars; +------+--------------+---------+ | ID | Name | Price | +------+--------------+---------+ | 1 | Nexa | 750000 | | 2 | Maruti Swift | 450000 | | 3 | BMW | 4450000 | | 4 | VOLVO | 2250000 | | 5 | Alto ... Read More
To change background color, use the mouseenter event. The background color change when you place mouse cursor:mouseenter: function(){ $(this).css("background-color", "gray"); }The mouse cursor is placed on the following element:Click and move the mouse pointer to change the background color.You can try to run the following code to learn how to animate a change in background color on mouseover:Example Live Demo $(document).ready(function(){ $("body").on({ mouseenter: function(){ $(this).css("background-color", "gray"); }, mouseleave: function(){ $(this).css("background-color", "red"); }, }); }); Click and move the mouse pointer to change the background color.
Single Row Sub QueryA single-row subquery is used when the outer query's results are based on a single, unknown value. Although this query type is formally called "single-row, " the name implies that the query returns multiple columns-but only one row of results. However, a single-row subquery can return only one row of results consisting of only one column to the outer query.In the below SELECT query, inner MySQL returns only one row i.e. the minimum salary for the company. It, in turn, uses this value to compare the salary of all the employees and displays only those, whose salary ... Read More
To perform matrix addition, take two matrices. Enter the rows and columns of matrix one and matrix two. Remember, both the matrix should be a square matrix to add them.Now add elements to both the matrices. Declare a new array and add both the arrays in it.arr3[i, j] = arr1[i, j] + arr2[i, j];Let us see the complete code −Exampleusing System; using System.Linq; class Demo { static void Main() { int m, n, i, j; Console.Write("Enter number of rows and columns of the matrix "); ... Read More
This is created under the Current schema in your SQL editor. You can check schema name at the top −In the above snapshot, you can see the current schema name where the view is created. You need to find this schema under the Catalog folder in HANA Studio.
Let us see the below table ARTICLE_LOOKUP, we will create a database view with first 4 columns and will hide Family_NAME and FAMILY_CODE.SQL statement- To create a view on the above table, write down the below SQL statementcreate view view_Articlelookup as select ARTICLE_ID,ARTICLE_LABEL,CATEGORY,SALE_PRICE from "AA_HANA11"."ARTICLE_LOOKUP";This will create a database view in the mentioned schema and you can check it in Views folder (schema name here-AA_HANA11). You can see a view with the name- view_Articlelookup and only 4 data columns are there.
Subqueries can work well in a SELECT statement FROM clause. Following is the syntax for the same −SELECT … FROM(subquery) [AS] name …To make it understand we are using the following data from table ‘cars’ −mysql> Select * from Cars; +------+--------------+---------+ | ID | Name | Price | +------+--------------+---------+ | 1 | Nexa | 750000 | | 2 | Maruti Swift | 450000 | | 3 | BMW | 4450000 | | 4 | VOLVO | 2250000 | | ... Read More
The HTML onreset event attribute is triggered when the form is reset in an HTML document.SyntaxFollowing is the syntax −ExampleLet us see an example of HTML onreset event Attribute − Live Demo body { color: #000; height: 100vh; background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) no-repeat; text-align: center; padding: 20px; } textarea { border: 2px solid #fff; background: transparent; font-size: 1rem; } ::placeholder { color: #000; ... Read More