#Sql Distinct

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Да, так изучаем и что-то понимаем?) Передача знаний по SQL! Одна из задач тестировщика любого грейда! Больше про задачи и подготовку, присоединяйтесьи смотрите шапку профиля @protestinginfo рассмотрим операторы SELECT, WHERE , DISTINCT Хочу напомнить, что данный язык запросов можно изучить на сайте https://www.sql-ex.ru Оператор SELECT осуществляет выборку из базы данных Команда DISTINCT позволяет выбирать только уникальные значения из базы данных Команда WHERE задает условие, по которому будут выбираться строки из базы данных. SELECT * FROM имя_таблицы SELECT * FROM имя_таблицы WHERE условие SELECT поле1, поле2... FROM имя_таблицы WHERE условие При выборке: SELECT DISTINCT поле FROM имя_таблицы WHERE условие При подсчете: SELECT COUNT(DISTINCT поле) FROM имя_таблицы WHERE условие При суммировании: SELECT SUM(DISTINCT поле) FROM имя_таблицы WHERE условие В запросе можно задавать следующие условия: • сравнение текста; • сравнение численных значений; • логические операции AND (и), OR (или) и NOT (отрицание). #тестировщик #тестированиепо#qa #тестирование #войтивit

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SQL JOIN TIP Most Beginners Don’t Know (ON vs USING) Two JOIN statements… same result… so what’s the difference? In 60 seconds I’ll show you: ✔ When to use ON ✔ When to use USING ✔ The easiest way to remember the rule Day 20 of SQL in 30. #SQLin30 #dataanalyst #DellTech #NVIDIA #DellProPrecision

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SQL Commands Explained – Complete SQL Chart (Light Theme) Master SQL fundamentals at a glance with this clean, professional SQL command chart. This visual breakdown covers DQL, DML, DDL, joins, functions, and window functions — perfect for beginners, students, and working professionals. 💡 What you’ll learn in this video: 🔹 SQL Command Types (DQL, DML, DDL) 🔹 SELECT, INSERT, UPDATE, DELETE 🔹 WHERE, GROUP BY, ORDER BY 🔹 JOINS (INNER, LEFT, RIGHT, FULL) 🔹 Aggregate & Window Functions 🔹 Real-world SQL structure simplified 🚀 Ideal for: 👨‍💻 Data Analysts 👩‍💻 SQL Developers 📈 Data Engineers 🎓 Students & Interview Prep Save this video 📌 and come back whenever you need a quick SQL refresher. 🔑 Relevant Keywords SQL tutorial, SQL commands, SQL chart, SQL basics, SQL for beginners, DML DDL DQL, SQL joins, SQL functions, SQL window functions, SQL interview questions, SQL cheat sheet, data analyst SQL, database fundamentals 🏷️ Hashtags (Optimized for Reach) #SQL #SQLTutorial #SQLCommands #DataAnalytics #DataScience

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Day 9 – DISTINCT, ALIAS & LIMIT in SQL | SQL 30 Days Series 🔥 SQL nerchukovali ante DISTINCT, ALIAS, LIMIT commands chala important. Real-time projects lo and SQL interviews lo frequently adige concepts ivvi. 👉 DISTINCT – duplicate data remove cheyyadaniki use avutundi 👉 ALIAS – columns ki simple name ivvadam kosam 👉 LIMIT – table nundi only konni rows fetch cheyyadaniki Data Analyst, Data Engineer, Business Analyst roles ki prepare avuthunna vallaki SQL basics strong ga undali. Anduke ee SQL 30 Days Series in Telugu start chesanu so beginners kuda easy ga ardham chesukogalru. If you want to crack SQL interviews and become Data Analyst / Data Engineer / BusinessAnalyst, follow this series daily. Follow @svdecodex for more SQL concepts explained in simple Telugu 🔥 #SQLTutorial #LearnSQL #DataAnalyst #SQLInterviewQuestions #fypppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp SQL tutorial, learn SQL in Telugu, SQL interview questions, SQL distinct command, SQL alias command, SQL limit command, SQL for beginners, SQL tutorial Telugu, data analyst SQL, data engineer SQL, SQL basics explained, SQL learning series, SQL practice questions, SQL beginners guide, SQL commands explained, tech Telugu learning, data analyst preparation, SQL interview preparation, instagram, explore, telugu reels, telugu educational reels, learn sql with svdecodex, sql reels telugu, telugu sql reels, reels Telugu, svdecodex

SQL cheat sheet! Save this before your next SQL interview! 💻🔥 . Don't forget to save this post for later and follow @sqlgeeks to learn more about SQL. Comment “SQL” if you want more cheat sheets like this! #learnsql#python #sql #sqlserver #dataanalytics

Most important Sql interview questions with answer💡 1. What is the difference between UNION and UNION ALL in SQL? Ans - UNION combines and returns distinct rows from multiple SELECT statements, while UNION ALL includes all rows, including duplicates. 2. Explain the difference between a clustered index and a non-clustered index. Ans - A clustered index determines the physical order of data in a table and is generally created on the primary key. A non-clustered index is a separate structure that provides a sorted order of data without altering the physical order of the table. 3. What is a correlated subquery in SQL? Ans- A correlated subquery is a subquery that depends on the outer query for its values. It executes once for each row of the outer query and is usually used for filtering or computing values based on the outer query’s result. 4. What is the purpose of the SQL CASE statement? Ans- The CASE statement allows conditional logic in SQL queries. It evaluates a series of conditions and returns a result based on the first condition that is met, similar to an if-else statement. 5. What is a recursive SQL query? Ans- A recursive SQL query is a query that refers to its own table within the query. It is commonly used to perform hierarchical or self-referencing queries, such as traversing a tree structure or computing recursive aggregates. 6. What are SQL stored procedures, and what are their advantages? Ans- SQL stored procedures are precompiled and stored in a database. They encapsulate a series of SQL statements and are executed by calling the procedure name. Advantages include code reusability, improved performance, enhanced security, and reduced network traffic. 7. What is the difference between a view and a table in SQL? 8. What is a self-join in SQL? 9. What are SQL stored procedures, and what are their advantages? 10. What is the difference between a view and a table in SQL? Let me now if you need answers for last 4 questions as there is word limitations for caption #datascience #sql #sqldeveloper #sqlinterview #interviewtips #interviewquestions #dataanalytics #dataanalyst #datascientist #sqlquestions #dataanalystroadmap #reelsinstagram #reels

🧠 SQL MCQs That Decide Interview Calls 😈 2️⃣5️⃣ MAX() returns? ❌ Minimum ❌ Average ❌ Count ✅ Maximum 👉 Finds the highest value in a column 📈 2️⃣6️⃣ GROUP BY is used with? ❌ WHERE ❌ ORDER BY ❌ DISTINCT ✅ Aggregate functions 👉 SUM, COUNT, AVG need GROUP BY 💡 2️⃣7️⃣ HAVING works on? ❌ Rows ❌ Columns ❌ Tables ✅ Groups 👉 WHERE → rows 👉 HAVING → grouped data 🔥 😳 Same SQL… totally different logic 💬 Comment your score: 0/3 | 1/3 | 2/3 | 3/3 👥 Tag a friend who uses WHERE instead of HAVING 😅 ❤️ Save this for SQL interviews & exams ➡️ Follow for daily SQL MCQs & placement prep #SQLMCQs #SQLReels #LearnSQL #DatabaseConcepts #SQLInterview PlacementPreparation CodingReels CSStudents EngineeringLife 🚀

SQL లో duplicate values తీసేయడం చాలా సులభం! DISTINCT keyword వాడి ఒకే value ఒక్కసారి మాత్రమే చూపించవచ్చు bro! Topic Notes: DISTINCT keyword SQL లో duplicates values తీసేయడానికి వాడతాం. SELECT query లో DISTINCT వాడితే, same values ఒక్కసారే చూపబడతాయి. Example: ఒక students table లో duplicate ID numbers ఉంటే, DISTINCT వాడి unique ID numbers ని మాత్రమే select చేయవచ్చు. Syntax: SELECT DISTINCT column_name FROM table_name; Hashtags: #SQL #SQLTips #LearnSQL #ChimtuBro Keywords: SQL, DISTINCT, Remove Duplicates, ID Number