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- The SELECT statement retrieves selected data based on specified conditions. The result of a SELECT statement is stored in a result set or result table.
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What is SQL select & how does it work?
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If you want to SELECT based on the value of another SELECT, then you probably want a "subselect": http://beginner-sql-tutorial.com/sql-subquery.htm For example, (from the link above):
Feb 12, 2024 · This tutorial explains how to use SELECT based on values returned from another SELECT statement in MySQL, including an example.
- Case Syntax
- Case: The Simple Format
- The searched Case Expression
- Ordering Conditions in Case
- Learning More About The SQL Case Expression
The basic syntax of the CASEexpression is presented below: The expression starts with the CASE keyword and ends with the END keyword. The names of specific columns or expressions are entered after the CASE keyword. The WHEN and THEN keywords define the logical conditions. After the WHEN clause, we see the condition or value to compare; the THEN det...
The simple CASE compares a value to one or more WHEN conditions. If it meets a WHEN condition, the THENresult is returned. Here's what the syntax looks like: In a simple CASE expression, the name of the column or expression to be evaluated is absolutely necessary. It goes after the CASE keyword. The set value goes after the WHEN. If the evaluated v...
The searched CASE expression is the most commonly-used format. But instead of comparing a column or expression against a defined set of values, a searched expression can compare multiple WHEN conditions and determine a result. This makes a searched CASEthe better choice for more complicated logic. Here's the syntax: Once again, the expression begin...
So now you can build conditions in the WHEN clause. But it's important to build them accurately. If your test value matches the first WHEN clause, the THEN clause is returned and the CASE expression is finished. Even if a value actually meets several WHEN conditions, the first condition it meets is the only one that will be returned. Look at the fo...
Being able to use a properly-formatted CASEexpression is a good ability to nurture. It allows you to get the results you expect from your queries. If you are interested in learning more about the CASE expression, check out LearnSQL's Standard SQL Functionscourse. It will show you how to build queries that use this expression and many others. You'll...
Apr 17, 2013 · EDIT: Using the answers people provided I've solved it by using a join in the correct place and here is the correct query: SELECT ROW_NUMBER() OVER(ORDER BY NETT) AS Rank, Name, FlagImg, Nett, Rounds FROM (SELECT Members.FirstName + ' ' + Members.LastName AS Name, CASE WHEN MenuCountry.ImgURL IS NULL THEN '~/images/flags/ismygolf.png' ELSE ...
Nov 20, 2020 · When you think about learning SQL, one of the first things you come across is the SELECT statement. Selecting information is arguably the most important SQL feature. In this article, we’ll demonstrate the typical use cases for SQL SELECT with practical examples.
Feb 20, 2023 · You can use the SQL SELECT statement with the WHERE clause. You use the WHERE clause to filter records. The WHERE clause extracts only those records that fulfill a specified condition. The syntax of the SQL SELECT statement with the WHERE clause is as follows: SELECT column_name(s) FROM table_name WHERE condition;
Jun 10, 2024 · The SELECT statement retrieves selected data based on specified conditions. The result of a SELECT statement is stored in a result set or result table. The SELECT statement can be used to access specific columns or all columns from a table.
