๐Here's a breakdown of SQL interview questions covering various topics:
๐บBasic SQL Concepts:
-Differentiate between SQL and NoSQL databases.
-List common data types in SQL.
๐บQuerying:
-Retrieve all records from a table named "Customers."
-Contrast SELECT and SELECT DISTINCT.
-Explain the purpose of the WHERE clause.
๐บJoins:
-Describe types of joins (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN).
-Retrieve data from two tables using INNER JOIN.
๐บAggregate Functions:
-Define aggregate functions and name a few.
-Calculate average, sum, and count of a column in SQL.
๐บGrouping and Filtering:
-Explain the GROUP BY clause and its use.
-Filter SQL query results using the HAVING clause.
๐บSubqueries:
-Define a subquery and provide an example.
๐บIndexes and Optimization:
-Discuss the importance of indexes in a database.
&Optimize a slow-running SQL query.
๐บNormalization and Data Integrity:
-Define database normalization and its significance.
-Enforce data integrity in a SQL database.
๐บTransactions:
-Define a SQL transaction and its purpose.
-Explain ACID properties in database transactions.
๐บViews and Stored Procedures:
-Define a database view and its use.
-Distinguish a stored procedure from a regular SQL query.
๐บAdvanced SQL:
-Write a recursive SQL query and explain its use.
-Explain window functions in SQL.
โ ๐These questions offer a comprehensive assessment of SQL knowledge, ranging from basics to advanced concepts.
โค๏ธLike if you'd like answers in the next post! ๐
๐Be the first one to know the latest Job openings ๐
https://t.me/jobs_SQL
๐บBasic SQL Concepts:
-Differentiate between SQL and NoSQL databases.
-List common data types in SQL.
๐บQuerying:
-Retrieve all records from a table named "Customers."
-Contrast SELECT and SELECT DISTINCT.
-Explain the purpose of the WHERE clause.
๐บJoins:
-Describe types of joins (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN).
-Retrieve data from two tables using INNER JOIN.
๐บAggregate Functions:
-Define aggregate functions and name a few.
-Calculate average, sum, and count of a column in SQL.
๐บGrouping and Filtering:
-Explain the GROUP BY clause and its use.
-Filter SQL query results using the HAVING clause.
๐บSubqueries:
-Define a subquery and provide an example.
๐บIndexes and Optimization:
-Discuss the importance of indexes in a database.
&Optimize a slow-running SQL query.
๐บNormalization and Data Integrity:
-Define database normalization and its significance.
-Enforce data integrity in a SQL database.
๐บTransactions:
-Define a SQL transaction and its purpose.
-Explain ACID properties in database transactions.
๐บViews and Stored Procedures:
-Define a database view and its use.
-Distinguish a stored procedure from a regular SQL query.
๐บAdvanced SQL:
-Write a recursive SQL query and explain its use.
-Explain window functions in SQL.
โ ๐These questions offer a comprehensive assessment of SQL knowledge, ranging from basics to advanced concepts.
โค๏ธLike if you'd like answers in the next post! ๐
๐Be the first one to know the latest Job openings ๐
https://t.me/jobs_SQL
โค2
Essential Math for AI.pdf
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Essential Math for AI
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Natural Language Processing with Transformers.pdf
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Cracking Codes with Python.pdf
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Al Sweigart, 2018
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hands-on-data-science.pdf
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Frank Kane, 2017
Frank Kane, 2017
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Forwarded from AI Prompts | ChatGPT | Google Gemini | Claude
๐ฐ ๐๐ฟ๐ฒ๐ฒ ๐๐ผ๐๐ฟ๐๐ฒ๐ ๐๐ผ ๐๐ถ๐ฐ๐ธ๐๐๐ฎ๐ฟ๐ ๐ฌ๐ผ๐๐ฟ ๐๐ฎ๐๐ฎ ๐ฆ๐ฐ๐ถ๐ฒ๐ป๐ฐ๐ฒ ๐๐ผ๐๐ฟ๐ป๐ฒ๐ โ ๐๐ฒ๐ด๐ถ๐ป๐ป๐ฒ๐ฟ-๐๐ฟ๐ถ๐ฒ๐ป๐ฑ๐น๐ & ๐๐ฒ๐ฟ๐๐ถ๐ณ๐ถ๐ฒ๐ฑ!๐
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An initiative supported by NASSCOM and the Government of Indiaโ ๏ธ
Ready to kickstart your career in Data Scienceโwithout spending a rupee?๐ฐ
These 4 beginner-friendly courses will help you build a strong foundation in data science by teaching you how to gather, clean, analyse, and visualise data๐๐
๐๐ฝ๐ฝ๐น๐ ๐๐ถ๐ป๐ธ๐:-๐
https://pdlink.in/45uXCtI
An initiative supported by NASSCOM and the Government of Indiaโ ๏ธ
โค1
Ansible From Beginner to Pro.pdf
5.2 MB
Ansible
Michael Heap, 2016
Michael Heap, 2016
Advanced Concepts in Operating Systems (Indian Edition).pdf
331.2 MB
Advanced Concepts in Operating Systems
Mukesh Singhal, 2008 (scanned)
Mukesh Singhal, 2008 (scanned)
โค1๐1
Forwarded from AI Prompts | ChatGPT | Google Gemini | Claude
๐ณ ๐ฅ๐ฒ๐ฎ๐ฑ๐-๐๐ผ-๐จ๐๐ฒ ๐๐บ๐ฎ๐ถ๐น ๐๐ผ๐ฟ๐บ๐ฎ๐๐ ๐๐ผ ๐๐บ๐ฝ๐ฟ๐ฒ๐๐ ๐ฅ๐ฒ๐ฐ๐ฟ๐๐ถ๐๐ฒ๐ฟ๐๐
๐ฉ Struggling to write the perfect email to a recruiter?๐ฃ
Youโre not alone. The way you write your email can make or break your first impression๐ค
๐๐ข๐ง๐ค๐:-
https://pdlink.in/3TtQh64
Having the right email format makes all the differenceโ ๏ธ
๐ฉ Struggling to write the perfect email to a recruiter?๐ฃ
Youโre not alone. The way you write your email can make or break your first impression๐ค
๐๐ข๐ง๐ค๐:-
https://pdlink.in/3TtQh64
Having the right email format makes all the differenceโ ๏ธ
โ
Javascript Reduce method Example.
โซ๏ธ Finding the longest word in a given string.
#JavaScript
โซ๏ธ Finding the longest word in a given string.
function longerWord(a, b) {
if (a.length > b.length) {
return a;
} else {
return b;
}
}
const sentence = 'Hey there what are you doing this Wednesday night';
const longest = sentence.split(' ').reduce(longerWord);
console.log(longest);
// Wednesday
#JavaScript
โค1