#thesqlquerycoach kết quả tìm kiếm
Want to upgrade your SQL? Learn GROUP BY deeply. It’s the key to summaries, insights, and real analysis. #SQLTips #DataInsights #TheSQLQueryCoach youtube.com/playlist?list=…
A good SQL analyst doesn’t just write queries — they ask why the data looks the way it does. Curiosity is your best tool. #DataMindset #SQLThinking #TheSQLQueryCoach youtube.com/playlist?list=…
If you wondered where I went.. I was onboarding a new client onto our POS system. Turns out real queries pay better than X threads. Back now 😄 Please Show #theSQLQuerycoach around
You don’t need to master everything today. SQL is a journey — one query at a time. #Motivation #SQLLearning #TheSQLQueryCoach youtube.com/playlist?list=…
Filtering isn’t enough. Master WHERE + HAVING. One filters rows, the other filters aggregates. #SQLLogic #TechLearning #TheSQLQueryCoach youtube.com/playlist?list=…
Every organisation needs people who understand data. SQL gives you that superpower. #CareerGrowth #LearnSQL #TheSQLQueryCoach youtube.com/playlist?list=…
LEFT JOIN is the most used JOIN in analytics. It preserves your main dataset. #SQLJoins #DataAnalysis #TheSQLQueryCoach youtube.com/playlist?list=…
This is a classic use case for GROUP BY + HAVING. Group by Score and filter scores that appear more than once, then join back (or use a subquery) to return the student names. Simple question, but it tests real understanding of duplicates and aggregation. im #theSQLQueryCoach
Normalize your data, but not too much. Balance matters. Good databases are practical, not perfect. #DatabaseDesign #SQLArchitecture #TheSQLQueryCoach youtube.com/playlist?list=…
COUNT(*) tells you how many rows exist. COUNT(column) tells you how many values are NOT null. Simple but important. #SQLTips #DataQuality #TheSQLQueryCoach youtube.com/playlist?list=…
A good SQL query answers a business question, not just returns rows. Think beyond code. Think value. #BusinessIntelligence #SQLThinking #TheSQLQueryCoach youtube.com/playlist?list=…
Always write readable SQL. Future-you will thank past-you. Indent. Space. Comment. #CleanCode #SQLBestPractices #TheSQLQueryCoach youtube.com/playlist?list=…
SQL is the gateway to Data Science. If you can extract clean data, models become easier. #DataScienceJourney #SQLPower #TheSQLQueryCoach youtube.com/playlist?list=…
Indexes are like the table of contents of a book. They help SQL find data faster. Use them wisely. #DatabaseDesign #SQLPerformance #TheSQLQueryCoach youtube.com/playlist?list=…
Mastering SQL JOINs is one of the most important steps in becoming confident with relational databases. In this video, we break down INNER JOIN, LEFT JOIN, and RIGHT JOIN using clear examples from a School Database. youtu.be/JAAKf_k2bio #TheSQLQueryCoach #sql #DataScience
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Joining Tables in SQL Explained: INNER, LEFT & RIGHT JOIN (Simple...
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