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This channels is for Programmers, Coders, Software Engineers.
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0- Python
1- Data Science
2- Machine Learning
3- Data Visualization
4- Artificial Intelligence
5- Data Analysis
6- Statistics
7- Deep Learning
8- programming Languages
✅ Free Courses with Certificate:
https://news.1rj.ru/str/free4unow_backup
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Understanding CTEs in SQL
A Common Table Expression (CTE) is a temporary result set that you can refer to within a SELECT, INSERT, UPDATE, or DELETE statement. It provides better readability and can be thought of as defining a temporary view for just one query.
A Common Table Expression (CTE) is a temporary result set that you can refer to within a SELECT, INSERT, UPDATE, or DELETE statement. It provides better readability and can be thought of as defining a temporary view for just one query.
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Checklist to become data analyst
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https://www.linkedin.com/posts/sql-analysts_dataanalytics-sql-sqlqueries-activity-7147557393692889089--c1z?utm_source=share&utm_medium=member_android
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https://www.linkedin.com/posts/sql-analysts_dataanalytics-sql-sqlqueries-activity-7147557393692889089--c1z?utm_source=share&utm_medium=member_android
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Data Analytics using SQL & Excel
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https://www.linkedin.com/posts/sql-analysts_dataanalytics-sql-dataanalysis-activity-7148654081153167360-CUyH?utm_source=share&utm_medium=member_android
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https://www.linkedin.com/posts/sql-analysts_dataanalytics-sql-dataanalysis-activity-7148654081153167360-CUyH?utm_source=share&utm_medium=member_android
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Hey 👋
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4. Enter your email and get it delivered!
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Here you can access Resources for SQL & Excel❤️🔥👇
https://dataanalysts.gumroad.com/l/Sql?a=363448787
◾How to get it:
1. Click on the link
2. Enter the amount you like [Can be 0 as well :) ]
3. Click the 'I Want This' Button
4. Enter your email and get it delivered!
I'd appreciate it if you could give it a 5 star when you download it.
Join for more: https://news.1rj.ru/str/sqlspecialist
Thanks 😊
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Forwarded from Data Analysis Books | Python | SQL | Excel | Artificial Intelligence | Power BI | Tableau | AI Resources
SQL with Practice Exercises
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800+ SQL Interview questions and answers 👇👇
https://www.linkedin.com/posts/sql-analysts_sql-datascience-course-activity-7158685869963423746-Jkny?utm_source=share&utm_medium=member_android
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📊Here's a breakdown of SQL interview questions covering various topics:
🔺Basic SQL Concepts:
-Differentiate between SQL and NoSQL databases.
-List common data types in SQL.
🔺Querying:
-Retrieve all records from a table named "Customers."
-Contrast SELECT and SELECT DISTINCT.
-Explain the purpose of the WHERE clause.
🔺Joins:
-Describe types of joins (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN).
-Retrieve data from two tables using INNER JOIN.
🔺Aggregate Functions:
-Define aggregate functions and name a few.
-Calculate average, sum, and count of a column in SQL.
🔺Grouping and Filtering:
-Explain the GROUP BY clause and its use.
-Filter SQL query results using the HAVING clause.
🔺Subqueries:
-Define a subquery and provide an example.
🔺Indexes and Optimization:
-Discuss the importance of indexes in a database.
&Optimize a slow-running SQL query.
🔺Normalization and Data Integrity:
-Define database normalization and its significance.
-Enforce data integrity in a SQL database.
🔺Transactions:
-Define a SQL transaction and its purpose.
-Explain ACID properties in database transactions.
🔺Views and Stored Procedures:
-Define a database view and its use.
-Distinguish a stored procedure from a regular SQL query.
🔺Advanced SQL:
-Write a recursive SQL query and explain its use.
-Explain window functions in SQL.
✅👀These questions offer a comprehensive assessment of SQL knowledge, ranging from basics to advanced concepts.
❤️Like if you'd like answers in the next post! 👍
👉Be the first one to know the latest Job openings 👇
https://news.1rj.ru/str/jobs_SQL
🔺Basic SQL Concepts:
-Differentiate between SQL and NoSQL databases.
-List common data types in SQL.
🔺Querying:
-Retrieve all records from a table named "Customers."
-Contrast SELECT and SELECT DISTINCT.
-Explain the purpose of the WHERE clause.
🔺Joins:
-Describe types of joins (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN).
-Retrieve data from two tables using INNER JOIN.
🔺Aggregate Functions:
-Define aggregate functions and name a few.
-Calculate average, sum, and count of a column in SQL.
🔺Grouping and Filtering:
-Explain the GROUP BY clause and its use.
-Filter SQL query results using the HAVING clause.
🔺Subqueries:
-Define a subquery and provide an example.
🔺Indexes and Optimization:
-Discuss the importance of indexes in a database.
&Optimize a slow-running SQL query.
🔺Normalization and Data Integrity:
-Define database normalization and its significance.
-Enforce data integrity in a SQL database.
🔺Transactions:
-Define a SQL transaction and its purpose.
-Explain ACID properties in database transactions.
🔺Views and Stored Procedures:
-Define a database view and its use.
-Distinguish a stored procedure from a regular SQL query.
🔺Advanced SQL:
-Write a recursive SQL query and explain its use.
-Explain window functions in SQL.
✅👀These questions offer a comprehensive assessment of SQL knowledge, ranging from basics to advanced concepts.
❤️Like if you'd like answers in the next post! 👍
👉Be the first one to know the latest Job openings 👇
https://news.1rj.ru/str/jobs_SQL
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