812.2K
DAStop wasting time searching for SQL practice platforms!
SQLZoo is all you need interactive, free & beginner-friendly!!
#sqlpractice #datawithashok #learnsql #dataanalyticsjourney
@datawithashok
#User Defined Functions In Sql
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RIDon’t understand JOINs in SQL?
This will be the last time🔥
#sql #rishabhdaliya
@rishabhdaliyaa
8.0K
JESQL in 60 Ep 3: Aggregate Functions: You need to know ⬇️
Comment “course” for my beginner course to learn all the basics for data analytics!
Whether you’re summarizing user behavior, totaling revenue, or generating KPIs, functions like COUNT(), SUM(), AVG(), MIN(), and MAX() help you move from raw data to meaningful insights by summarizing data.
Here are the ones you REALLY should know:
✅ COUNT() – count records
✅ SUM() – calculate total
✅ AVG() – find central tendency
✅ MIN() - identify minimum value
✅ MAX() – identify maximum value
You can also use them with GROUP BY to slice data by dimensions (aka columns) like date, customer, or user_id— this will be the next video so stay tuned! 🥳
If you’re not comfortable with these yet, they’re one of the first steps to getting more comfortable in SQL! They’ll unlock so much more for you 🤩
Which is NOT an aggregate function? (Vote in poll)
Comment “course” for my beginner course to learn all the basics for data analytics!
#sql #dataanalytics #datascience #sqlserver #womenindata #womenintech
@jessramosdata
366.5K
LI1. QUALIFY + ROW_NUMBER()
Lets you rank rows and filter results in the same query — perfect for grabbing the most recent or top record without subqueries.
2. LAG / LEAD
Used to look at the previous or next row — great for comparing changes over time (day-over-day, month-over-month).
3. CTE (WITH clause)
Creates a temporary, named query so you can break complex SQL into clean, readable steps.
#data #analyst #dayinthelife #dadlife #sql
@life.by.elliot
1.1M
GEMost asked SQL Interview Questions 💯
1.) Explain order of execution of SQL.
2.) What is difference between where and having?
3.) What is the use of group by?
4.) Explain all types of joins in SQL?
5.) What are triggers in SQL?
6.) What is stored procedure in SQL
7.) Explain all types of window functions?
(Mainly rank, row_num, dense_rank, lead & lag)
8.) What is difference between Delete and Truncate?
9.) What is difference between DML, DDL and DCL?
10.) What are aggregate function and when do we use them? explain with few example.
11.) Which is faster between CTE and Subquery?
12.) What are constraints and types of Constraints?
13.) Types of Keys?
14.) Different types of Operators ?
15.) Difference between Group By and Where?
16.) What are Views?
17.) What are different types of constraints?
18.) What is difference between varchar and nvarchar?
19.) Similar for char and nchar?
20.) What are index and their types?
21.) What is an index? Explain its different types.
22.) List the different types of relationships in SQL.
23.) Differentiate between UNION and UNION ALL.
24.) How many types of clauses in SQL?
25.) What is the difference between UNION and UNION ALL in SQL?
26.) What are the various types of relationships in SQL?
27.) Difference between Primary Key and Secondary Key?
28.) What is the difference between where and having?
29.) Find the second highest salary of an employee?
30.) Write retention query in SQL?
31.) Write year-on-year growth in SQL?
32.) Write a query for cummulative sum in SQL?
33.) Difference between Function and Store procedure ?
34.) Do we use variable in views?
35.) What are the limitations of views?
#sql #coding #database #programming #programmer #coder #softwaredevelopment
@geekydev.in
91.2K
ASSQL concepts you need to know vs. don’t need to know… for your first Data Analyst job.
✅ Must know SQL concepts
1. SELECT statements
2. WHERE clauses
3. GROUP BY
4. ORDER BY
5. JOINs (INNER, LEFT, RIGHT, FULL)
6. Aggregate functions (COUNT, SUM, AVG, etc)
7. Aliases (AS)
8. Filtering with HAVING
9. Subqueries
10. CASE WHEN logic
11. Data types (VARCHAR, INT, DATE, etc.)
12. NULL handling (IS NULL, COALESCE)
13. LIMIT / OFFSET
14. Basic date functions (e.g., DATE_TRUNC, CURRENT_DATE)
15. UNION vs UNION ALL
16. Basic window functions (ROW_NUMBER, RANK, PARTITION BY)
❌ Nice-to-know (i.e. not a requirement) SQL concepts
1. Recursive CTEs
2. Pivot/Unpivot
3. Temporary tables
4. Indexing and query optimization
5. Stored procedures
6. Triggers
7. Views and materialized views
8. Permissions and user management
9. JSON parsing in SQL
10. Writing custom functions
11. Database normalization theory (3NF etc.)
12. Query execution plans
Repost if this was helpful for you!
#dataanalyst #dataanalytics #sql #datascience
@askdatadawn
3.8K
COWhat are user defined functions in SQL?
SQL Interview Questions ❓
Youtube:- codeinqueries
.
.
.
#100daysofcode #100days100questions #sql
#sqlserver #mongodb #communication
#itskills #interviewtips #sqlinterview #gcp #bigquery #dataanalysis #delhi
#noida
#businessintelligence #busineesanalyst
#datascience #dataanalytics #python #coding
#criticalthinking #azure #powerbi #patna #ssis
#adf #etl #trending #funny #bangalore
@codeinqueries
1.6M
GE95% of the companies ask the same SQL questions 😱
Check the questions list below 🔻
1.) Explain order of execution of SQL.
2.) What is difference between where and having?
3.) What is the use of group by?
4.) Explain all types of joins in SQL?
5.) What are triggers in SQL?
6.) What is stored procedure in SQL
7.) Explain all types of window functions?
(Mainly rank, row_num, dense_rank, lead & lag)
8.) What is difference between Delete and Truncate?
9.) What is difference between DML, DDL and DCL?
10.) What are aggregate function and when do we use them? explain with few example.
11.) Which is faster between CTE and Subquery?
12.) What are constraints and types of Constraints?
13.) Types of Keys?
14.) Different types of Operators ?
15.) Difference between Group By and Where?
16.) What are Views?
17.) What are different types of constraints?
18.) What is difference between varchar and nvarchar?
19.) Similar for char and nchar?
20.) What are index and their types?
21.) What is an index? Explain its different types.
22.) List the different types of relationships in SQL.
23.) Differentiate between UNION and UNION ALL.
24.) How many types of clauses in SQL?
25.) What is the difference between UNION and UNION ALL in SQL?
26.) What are the various types of relationships in SQL?
27.) Difference between Primary Key and Secondary Key?
28.) What is the difference between where and having?
29.) Find the second highest salary of an employee?
30.) Write retention query in SQL?
31.) Write year-on-year growth in SQL?
32.) Write a query for cummulative sum in SQL?
33.) Difference between Function and Store procedure ?
34.) Do we use variable in views?
35.) What are the limitations of views?
#coding #programming #programmer #python #developer #javascript #code #technology #coder #codinglife #computerscience #html #java #webdevelopment #webdeveloper #tech #css #softwaredeveloper #software #webdesign #codingisfun #linux #softwareengineer #programmers #php #cybersecurity #hacking #computer #pythonprogramming #development
[ SQL, Coding Interview Questions, Coding, Interview]
@geekydev.in
5.6K
BHDATE FUNCTIONS in SQL explained clearly in Telugu. Day 28 of SQL ZERO to HERO..
#coding #btech #job #engineering #telugutech #viral #sqlreels #instagram #sql #intern
@bhanu_shares.tech
575
AZ*SQL Interviews LOVE to test you on Window Functions. Here’s the list of 7 most popular window functions*
👇 𝟕 𝐌𝐨𝐬𝐭 𝐓𝐞𝐬𝐭𝐞𝐝 𝐖𝐢𝐧𝐝𝐨𝐰 𝐅𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐬
* RANK() - gives a rank to each row in a partition based on a specified column or value
* DENSE_RANK() - gives a rank to each row, but DOESN'T skip rank values
* ROW_NUMBER() - gives a unique integer to each row in a partition based on the order of the rows
* LEAD() - retrieves a value from a subsequent row in a partition based on a specified column or expression
* LAG() - retrieves a value from a previous row in a partition based on a specified column or expression
* NTH_VALUE() - retrieves the nth value in a partition
*React ❤️ for the detailed explanation*#pyspark #python #databricks
@azure_data_engineer
5.8K
SQThere are three main types of window functions used in SQL.
1. Aggregate Window Functions
👉 Perform calculations like SUM, AVG, COUNT, MIN, MAX over a window of rows.
Example use: running total, moving average.
2.Ranking Window Functions
👉 Assign a rank or position to rows.
Examples: ROW_NUMBER, RANK, DENSE_RANK, NTILE
3.Analytical (Value) Window Functions
👉 Return values from other rows in the window.
Examples: LAG, LEAD, FIRST_VALUE, LAST_VALUE
Do follow for more such content:@sqlswathimuthyam
#mysql #sql #windowfunctions #dataanalyst #sqlswathimuthyam
@sqlswathimuthyam
14.9K
BCBasics of function in C language 🔥👨🏻💻
Day 09/100🎯✅
Unlock the power of Functions in C! 💻🔥 From predefined library types like printf to user-defined ones with return types and parameters, see declaration, definition, calling, and execution flow—plus pros like code reuse, smaller size, easy debugging. Real-life like a machine: give input, get output! Master this for cleaner, reusable C code today.
#FunctionsInC #CProgramming #CLanguage #UserDefinedFunctions #LibraryFunctions #CodingTutorial #LearnC #CForBeginners #ProgrammingReels #CodeReels #CFunctions #BCAwala #CodingBasics #FunctionDefinition #CodeReuse #DebuggingTips #ProgrammingLife #TechReels #CodingForBeginners #EducationalReels#bcawalha#functionwithbcawalha
@bcawalha
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