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SQLearning SQL - Subqueires - Part 1
@sql.handbook
#Mdx Query Language Sql
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REI thought I’d ‘mastered’ SQL… until I stumbled into PL/SQL and realized I was just scratching the surface! 💡 Suddenly, my simple queries turned into powerful code blocks—with loops, error handling, and stored procedures that automated hours of work. No more panic when errors hit; PL/SQL let me handle them smoothly. And the speed? Night and day with big datasets.
I’ve made 80+ free videos breaking down EVERY PL/SQL topic (link in bio!). Drop a ‘PL/SQL’ below 👇 and I’ll DM you the full course—just hit follow so it goes through!
#SQL #PLSQL #CodingTips #DataScience #LearnToCode
@rebellionrider
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MIFree Resources to master SQL
Just add one more skill to your resume before 2024 ends !!
Comment below if you need resources on any other topic , I am there to help you.
SQL is the backbone of data management, empowering you to store, query, and analyze data efficiently—essential for anyone diving into databases or data science.
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SQL, Databases, Data Management, Data Analysis, Query Language, Data Science, Programming, Coding, SQL Basics, Data Retrieval, Database Queries, Tech Skills, Data Storage, Backend Development, SQL Learning, Data Engineer, SQL Developer, Database Administration
#Tags: #SQL #Databases #DataManagement #DataAnalysis #QueryLanguage #DataScience #Programming #Coding #SQLBasics #DataRetrieval #DatabaseQueries #TechSkills #DataStorage #BackendDevelopment #SQLLearning #DataEngineer #SQLDeveloper #DatabaseAdministration
@missgandhi.tech
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COWhat is SQL and why do we need it?
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@coding_knowladge 🔥
Join our Telegram channel for free Handwritten Notes and daily tech updates 📍 link is in bio 💫
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@codingknowledge
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PYSQL AND PLSQL FULL SYLLABUS HANDWRITTEN NOTES
@python_world_in
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TOSAVE this post for later! 💾
Are you curious about the language of data and how to manipulate it to gain insights? Then SQL (Structured Query Language) is the perfect tool for you! 🤓💻
In just 30 seconds, this quick explainer video will introduce you to the basics of SQL and give you a taste of what it can do. From querying and filtering data to sorting and joining tables, SQL is an essential skill for anyone working with data.
So whether you’re a data analyst, a business owner, or just someone interested in data and analytics, learning SQL can take your skills to the next level. 💪🏼
Check out this video to get started and unlock the power of SQL! 🔍🔍🔍
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@tom.developer
1.1K
AZ✅ *Top 10 SQL Interview Questions & Answers* 💻🗃️
1️⃣ *What is SQL?*
SQL (Structured Query Language) is used to manage and manipulate relational databases—like inserting, updating, deleting, and querying data.
2️⃣ *What is the difference between WHERE and HAVING?*
- `WHERE`: Filters rows *before* grouping
- `HAVING`: Filters groups *after* aggregation
3️⃣ *What are JOINS in SQL?*
Joins combine rows from two or more tables:
- INNER JOIN
- LEFT JOIN
- RIGHT JOIN
- FULL OUTER JOIN
4️⃣ *What is a PRIMARY KEY?*
A column (or set of columns) that uniquely identifies each row in a table. It cannot contain NULL values.
5️⃣ *What is a FOREIGN KEY?*
It links two tables. A foreign key in one table points to the primary key in another.
6️⃣ *What is the difference between DELETE and TRUNCATE?*
- `DELETE`: Removes rows one by one (can use WHERE)
- `TRUNCATE`: Deletes all rows, faster, can’t use WHERE
7️⃣ *What is a Subquery?*
A query inside another query. Used to return data that will be used in the main query.
8️⃣ *What is a View?*
A virtual table based on a SELECT query. Doesn’t store data itself, just shows results.
9️⃣ *What is normalization?*
Organizing data to reduce redundancy and improve data integrity (1NF, 2NF, 3NF, etc.)
🔟 *What is an Index?*
A performance optimization tool that speeds up data retrieval.
#sql
#python #databricks #pyspark
@azure_data_engineer
6.5K
CO->FOLLOW FOR THE NON-STOP DOSE OF SQL🔥
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@codewithbroz
256
COAre you starting your journey in data analytics? Here are the top 5 essential tools every beginner data analyst should master!
1. Microsoft Excel
🔹 The OG of data analysis! Excel helps with data cleaning, visualization, and basic statistical analysis. Learn formulas, pivot tables, and Power Query to level up!
2. SQL (Structured Query Language)
🔹 The language of databases! SQL lets you extract, filter, and manipulate data from large datasets efficiently. Tools like MySQL, PostgreSQL, and Microsoft SQL Server are great for practice.
3. Tableau
🔹 Transform raw data into stunning visuals! Tableau makes data visualization easy and interactive, helping you communicate insights effectively.
4. Python
🔹 A must-have for automation and advanced analytics! Learn libraries like Pandas for data manipulation and Matplotlib for visualization.
5. Power BI
🔹 Microsoft’s powerful BI tool for creating interactive dashboards and reports. It integrates seamlessly with Excel and databases for dynamic analytics.
Mastering these tools will set you up for success in your data analytics journey!
Which tool are you learning right now? Drop a comment below! 👇
#DataAnalytics #TechForBeginners #CodeantTechHub #LearnDataAnalytics #CareerGrowth
@codeanthub
13.7K
MOThis trail reel is your sign to learn sql. Follow for entire series.
Comment START for the resources
@mominarahim20
106.1K
ZEDay 36/100 - SQL Challenge: Weather Temperature Comparison 🌤️
In this challenge, we tackle an interesting SQL problem: finding dates with higher temperatures compared to the previous day. The twist? If the previous day doesn’t exist or isn’t consecutive, it’s not considered! Learn how to use window functions like LAG() or self-joins with date differences to solve this efficiently.
Perfect for those practicing SQL queries for Amazon, Google, or data analyst interviews.
#SQLChallenge #Day36 #100DaysOfSQL #SQLInterview #DataAnalyst #LearnSQL #SQLQuery #GoogleInterview #AmazonInterview #WindowFunctions #SelfJoin #TemperatureComparison #DataEngineering #SQLPractice
@zero_analyst
9.0K
DEJoins In SQL || Don't miss the end ||
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@deekshitha_tech_talks
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