Forwarded from Artificial Intelligence
๐ณ ๐ ๐๐๐-๐๐ป๐ผ๐ ๐ฆ๐ค๐ ๐๐ผ๐ป๐ฐ๐ฒ๐ฝ๐๐ ๐๐๐ฒ๐ฟ๐ ๐๐๐ฝ๐ถ๐ฟ๐ถ๐ป๐ด ๐๐ฎ๐๐ฎ ๐๐ป๐ฎ๐น๐๐๐ ๐ฆ๐ต๐ผ๐๐น๐ฑ ๐ ๐ฎ๐๐๐ฒ๐ฟ๐
If youโre serious about becoming a data analyst, thereโs no skipping SQL. Itโs not just another technical skill โ itโs the core language for data analytics.๐
๐๐ข๐ง๐ค๐:-
https://pdlink.in/44S3Xi5
This guide covers 7 key SQL concepts that every beginner must learnโ ๏ธ
If youโre serious about becoming a data analyst, thereโs no skipping SQL. Itโs not just another technical skill โ itโs the core language for data analytics.๐
๐๐ข๐ง๐ค๐:-
https://pdlink.in/44S3Xi5
This guide covers 7 key SQL concepts that every beginner must learnโ ๏ธ
The Only SQL You Actually Need For Your First Job (Data Analytics)
The Learning Trap: What Most Beginners Fall Into
When starting out, it's common to feel like you need to master every possible SQL concept. You binge YouTube videos, tutorials, and courses, yet still feel lost in interviews or when given a real dataset.
Common traps:
- Complex subqueries
- Advanced CTEs
- Recursive queries
- 100+ tutorials watched
- 0 practical experience
Reality Check: What You'll Actually Use 75% of the Time
Most data analytics roles (especially entry-level) require clarity, speed, and confidence with core SQL operations. Hereโs what covers most daily work:
1. SELECT, FROM, WHERE โ The Foundation
SELECT name, age
FROM employees
WHERE department = 'Finance';
This is how almost every query begins. Whether exploring a dataset or building a dashboard, these are always in use.
2. JOINs โ Combining Data From Multiple Tables
SELECT e.name, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.id;
Youโll often join tables like employee data with department, customer orders with payments, etc.
3. GROUP BY โ Summarizing Data
SELECT department, COUNT(*) AS employee_count
FROM employees
GROUP BY department;
Used to get summaries by categories like sales per region or users by plan.
4. ORDER BY โ Sorting Results
SELECT name, salary
FROM employees
ORDER BY salary DESC;
Helps sort output for dashboards or reports.
5. Aggregations โ Simple But Powerful
Common functions: COUNT(), SUM(), AVG(), MIN(), MAX()
SELECT AVG(salary)
FROM employees
WHERE department = 'IT';
Gives quick insights like average deal size or total revenue.
6. ROW_NUMBER() โ Adding Row Logic
SELECT *
FROM (
SELECT *, ROW_NUMBER() OVER(PARTITION BY customer_id ORDER BY order_date DESC) as rn
FROM orders
) sub
WHERE rn = 1;
Used for deduplication, rankings, or selecting the latest record per group.
Credits: https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02
React โค๏ธ for more
The Learning Trap: What Most Beginners Fall Into
When starting out, it's common to feel like you need to master every possible SQL concept. You binge YouTube videos, tutorials, and courses, yet still feel lost in interviews or when given a real dataset.
Common traps:
- Complex subqueries
- Advanced CTEs
- Recursive queries
- 100+ tutorials watched
- 0 practical experience
Reality Check: What You'll Actually Use 75% of the Time
Most data analytics roles (especially entry-level) require clarity, speed, and confidence with core SQL operations. Hereโs what covers most daily work:
1. SELECT, FROM, WHERE โ The Foundation
SELECT name, age
FROM employees
WHERE department = 'Finance';
This is how almost every query begins. Whether exploring a dataset or building a dashboard, these are always in use.
2. JOINs โ Combining Data From Multiple Tables
SELECT e.name, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.id;
Youโll often join tables like employee data with department, customer orders with payments, etc.
3. GROUP BY โ Summarizing Data
SELECT department, COUNT(*) AS employee_count
FROM employees
GROUP BY department;
Used to get summaries by categories like sales per region or users by plan.
4. ORDER BY โ Sorting Results
SELECT name, salary
FROM employees
ORDER BY salary DESC;
Helps sort output for dashboards or reports.
5. Aggregations โ Simple But Powerful
Common functions: COUNT(), SUM(), AVG(), MIN(), MAX()
SELECT AVG(salary)
FROM employees
WHERE department = 'IT';
Gives quick insights like average deal size or total revenue.
6. ROW_NUMBER() โ Adding Row Logic
SELECT *
FROM (
SELECT *, ROW_NUMBER() OVER(PARTITION BY customer_id ORDER BY order_date DESC) as rn
FROM orders
) sub
WHERE rn = 1;
Used for deduplication, rankings, or selecting the latest record per group.
Credits: https://whatsapp.com/channel/0029VaGgzAk72WTmQFERKh02
React โค๏ธ for more
๐๐ฐ๐ฒ ๐ฌ๐ผ๐๐ฟ ๐ฆ๐ค๐ ๐๐ป๐๐ฒ๐ฟ๐๐ถ๐ฒ๐ ๐๐ถ๐๐ต ๐ง๐ต๐ฒ๐๐ฒ ๐ฏ๐ฌ ๐ ๐ผ๐๐-๐๐๐ธ๐ฒ๐ฑ ๐ค๐๐ฒ๐๐๐ถ๐ผ๐ป๐! ๐
๐คฆ๐ปโโ๏ธStruggling with SQL interviews? Not anymore!๐
SQL interviews can be challenging, but preparation is the key to success. Whether youโre aiming for a data analytics role or just brushing up, this resource has got your back!๐
๐๐ข๐ง๐ค๐:-
https://pdlink.in/4olhd6z
Letโs crack that interview together!โ ๏ธ
๐คฆ๐ปโโ๏ธStruggling with SQL interviews? Not anymore!๐
SQL interviews can be challenging, but preparation is the key to success. Whether youโre aiming for a data analytics role or just brushing up, this resource has got your back!๐
๐๐ข๐ง๐ค๐:-
https://pdlink.in/4olhd6z
Letโs crack that interview together!โ ๏ธ
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