SQL Basics Tutorial for Beginners (Practice SQL Queries)

[@techTFQ]

Since it's a long video, I am adding the timestamp to each of the sections covered in this video so you can skip and watch only the sections, you are interested in. A BIG THANK YOU to each and everyone one of you for appreciating this video!!! Timestamps: 00:00​ Intro 01:42​ What is SQL 03:14​ Different types of SQL Commands 03:36​ What is Data Definition Language (DDL) 04:46​ What is Data Type in SQL 06:11​ What are Constraints in SQL 08:33​ What is Data Manipulation Language (DML) 09:40​ Practice SQL Commands (DDL, DML) 21:10​ What is Data Query Language (DQL) 23:13​ Practice simple SQL Queries 25:18​ Operators in SQL (Comparison Operators, Arithmetic Operators, Logical Operators) 34:48​ Case Statement in SQL 36:15​ Different ways to write queries in SQL 42:30​ UNION and UNION ALL Operators in SQL 47:18​ GROUP BY Statement in SQL 56:10​ Sub Queries in SQL 58:55​ Aggregate Functions in SQL (AVG, MIN, MAX, COUNT, SUM) 01:01:56​ SQL Joins (Inner Join, Left Join, Right Join, Full Outer Join)

[@anishabanerjee379]

Ha you missed an as before c3 in query 1 and query2 at 22:17 minute

[@skarthikasakthi560]

Nice explanation and your voice

[@supriyagaddam7857]

Tried to contact you, regarding sql classes

[@ashukumar-wh3qb]

​ @techTFQ @36:21 in case statement what is order by 2 desc; what is 2 here ??

[@randeeppidichetty1754]

Sir can you pls change the theme of application. My request

[@sonamkumar059]

For the past 3 days, I have been trying to learn the basics of SQL from different channels. This video is, so far, the best in explanation. I love the fact that you make SQL sound so simple and easy to understand. I would definitely recommend you to other people who want to go into the data analytics business. Thank you so much.

[@Dheerane]

🎯 Key points for quick navigation: 00:00 *📚 SQL Overview* - SQL is a widely used programming language for managing relational databases. - It allows interaction with databases for reading, writing, modifying, and analyzing data. - SQL is essential for various roles including developers, analysts, engineers, and scientists. 03:18 *🏗️ SQL DDL Commands* - Data Definition Language (DDL) commands in SQL include CREATE, ALTER, DROP, and TRUNCATE. - These commands are used to define and manage database structures like tables and views. - DDL commands ensure database objects are created, modified, or deleted as required. 08:21 *🛠️ SQL DML Commands* - Data Manipulation Language (DML) commands in SQL include INSERT, UPDATE, and DELETE. These commands are used to manipulate data within database tables. - DML commands facilitate adding, modifying, or removing data entries. 13:00 *📊 SQL Constraints* - Constraints like CHECK, NOT NULL, UNIQUE, PRIMARY KEY, and FOREIGN KEY ensure data integrity. - They impose rules on data columns to maintain consistency and accuracy. - Constraints prevent invalid data insertion and enforce relational integrity. 21:16 *📑 SQL SELECT Queries* - SELECT queries retrieve data from one or more tables based on specified conditions. - These queries form the core of SQL for fetching, analyzing, and reporting data. - SQL SELECT statements are flexible and can include complex joins and filtering conditions. 22:40 *📚 Introduction to SQL basics and practice queries* - Introduction to writing SQL select queries covering operators, group by statements, SQL joins, subqueries, and aggregate functions. - Overview of database tables designed to simulate a school database environment. 24:31 *📊 Basic SQL select queries and operators* - Explanation of the SQL `SELECT` statement using `SELECT * FROM students` to fetch all records. - Detailed overview of SQL operators: equal to, not equal to, less than or equal to, greater than or equal to, and their practical uses in filtering data. 27:05 *🔄 Sorting and filtering data in SQL* - Demonstration of the `ORDER BY` clause for sorting query results. - Practical application of the `BETWEEN` operator for filtering salary ranges. - Explanation of the `IN` and `NOT IN` clauses for filtering data based on multiple conditions. 30:21 *🧩 Logical operators and conditional queries in SQL* - Detailed use of `AND` and `OR` operators in SQL queries for combining multiple conditions. - Examples of how `AND` requires all conditions to be true, while `OR` retrieves results if any condition is true. 35:05 *🎯 Conditional logic with CASE statements in SQL* - Utilization of the `CASE` statement to create conditional logic in SQL queries. - Example of using `CASE` to categorize salaries into high, average, and low categories based on predefined conditions. 36:28 *🌐 SQL joins: INNER JOIN and WHERE clause* - Explanation of SQL joins using `INNER JOIN` and the `WHERE` clause for filtering data across multiple tables. - Comparison of JOIN syntax using aliases for better readability and debugging in complex queries. 44:14 *📊 Union and Union All in SQL* - Understanding the usage of `UNION` and `UNION ALL` operators in SQL. - `UNION` combines results and removes duplicates, while `UNION ALL` combines results without removing duplicates. - Ensure columns and their data types match when using `UNION`. 47:20 *📊 Group By in SQL Queries* - Explanation of the `GROUP BY` statement in SQL to aggregate data. - Use `GROUP BY` to group data based on specific column values. - Essential for performing aggregate functions like `COUNT`, `SUM`, `AVG` on grouped data. 52:08 *📊 Using Group By with Having Clause* - How to filter grouped data using the `HAVING` clause in SQL. - `HAVING` clause is used with `GROUP BY` to apply conditions to aggregated data. - Example: Filtering classes with more than 100 students using `GROUP BY` and `HAVING`. 54:12 *📊 Subqueries in SQL* - Introduction to subqueries and their role in SQL queries. - Subqueries are queries nested inside another query. - Useful for complex filtering and retrieving specific data subsets. 58:49 *📊 Aggregate Functions in SQL* - Understanding aggregate functions (`AVG`, `SUM`, `MIN`, `MAX`) in SQL. - Aggregate functions perform calculations on a set of values and return a single value. - Practical examples include calculating average salary or total salary in a dataset. 01:02:08 *📊 Inner Join and Outer Join in SQL* - Explanation of `INNER JOIN` and `OUTER JOIN` in SQL. - `INNER JOIN` retrieves records that have matching values in both tables. - Types of `OUTER JOIN`: `LEFT`, `RIGHT`, and `FULL`, for retrieving unmatched records from one or both tables. 01:06:21 *📊 Understanding Left Outer Join* - Understanding left join in SQL, - Left join fetches all records from the left table and matching records from the right table. - Non-matching records from the left table are also included with NULL values for the right table columns. 01:07:54 *🔄 Exploring Right Outer Join* - Exploring right join in SQL, - Right join retrieves all records from the right table and matching records from the left table. - Non-matching records from the right table appear with NULL values for the left table columns. 01:09:17 *🌐 Applying Full Outer Join* - Applying full outer join in SQL, - Full outer join combines results of both left and right outer joins. - It retrieves all matching records, along with non-matching records from both left and right tables. Made with HARPA AI

[@realninja357]

This video is absolutely brilliant. 1 hour to learn what I've been struggling with for months! This was vital in understanding the bigger picture. I am so grateful.

[@hemantgoyal6651]

Hands down one of the best SQL tutorials I've seen on the Internet! Perfectly planned and executed!

[@jamesorior]

Chat GPT is replacing Database Professionals

[@sudarshanmhaisdhune1039]

@@jamesorior chatGPT site is down bro! Go & get some coffee......

[@tombsmaker]

# Timestamps 3:40 DDL 3:59, 4:19 create 4:02 alter 4:08 drop 4:12 truncate 9:48 datatype 5:16 varchar 5:29 Int 5:36 date 5:45 float 5:54 boolean 6:06 sample data type 6:12 constraints 6:34 check constraints 6:54 not null constraints 7:01 unique constraint 7:21 primary key 7:43 foreign key 8:10 drop 8:17 alter 8:34 DML 8:43 insert 9:03 update 9:22 delete 9:42 DDL & DML operations practical 9:44 create table 9:52 datatype 9:56 varchar 10:17 not null 10:24 check constraint 10:39 primary key 10:42 foreign key 11:02 select address, school, staff 11:33 insert 12:00 check constraint insertion error 12:30 primary key constraint error 13:00 not null constraint error 13:27 foreign key constraint error 14:34 Drop table 14:56 After command (datatype, rename table, rename column, 16:58 add constraints alter 17:36 DML 17:48 2 different insert syntax style 18:30 multiple records insertion 18:58 update 20:18 delete 21:10 DAL 21:13 Select 24:40 fetch all records 25:10 fetch particular columns 25:50 where =!-comparison 26:33

[@onyxnatural1797]

Beautiful! You've really helped my learning path on Data Analysis. Thank you. Moreover,if the video can be enlarged that will help more as they're very tiny.

[@pritamsarkar3371]

best brief sql vid in youtube till now

[@techTFQ]

Thank you very much ☺️

[@ushalandesahoo1794]

Recently I switched from BA to DA role and your SQL videos are very useful. I have watched many videos but your way of explanation is easy to understand.

[@techTFQ]

Very happy to read this :) thank you

[@gerrielegue1095]

Today I took basic SQL lessons. A very good and clear explanation. Thank you for setting up the lessons professionally. I am already looking forward to the next lessons. I wish you and your family a healthy 2023

[@aaronschwartzman2926]

Incredible content! You explain SQL very well. Never thought I’d learn SQL in an hour and 10 minutes. Thank you!

[@techTFQ]

Thank you Aaron I am glad this helped

[@payalsingh9917]

Thanks, I am giving interviews ri8 now and its so helpful to clear all doubt in less time. I love the fact that you make SQL sound so simple and easy to understand. I would definitely recommend you to other people who want to go into the data analytics business. Thank you so much.

[@shaikusman536]

WOW ...Started to learn SQL ...You are a Good Teacher Brother...Thanks a Ton....

[@techTFQ]

Thank you so much Shaik :) Happy to know you benefit from this video :)

[@aleskerovw]

I don't understand why this video has so small number of views and likes... The video is very informative, thank you very much!

[@techTFQ]

Thank you so much! Glad that you found it useful...

[@abdulreeves2742]

Share it with your friends and people who u think it might be helpful....and don't forget to tell then to like and share😉😉

[@techTFQ]

Thanks a lot Reeves for your kind words 🙏🏼☺️

[@techTFQ]

Thank you Veena 🙏🏼🙏🏼☺️

[@praveen4892ify]

Exactly the video is to the point and made with perfection

[@BenDieselBasicAutomotive]

This is very comprehensive.... yet simplified topic.... Thank you... Sir...

[@tekndesign5721]

You are a legend man! This is one of the best SQL tutorials out there. And the provided downloadable SQL Scripts just made it the best ever! The plain english language reference in front of each SQL queries, just gave me a goosebumps. A massive thank you, just what I've been looking for as SQL beginner.

[@techTFQ]

Thank you so much buddy. very glad you liked it

[@sivaramakrishnachilukuri3093]

can you please share that SQL scripts I will download it.

[@Michael_Tseye]

Bro you can teach💯💯 Best teacher I’ve seen so far Details 💯

[@techTFQ]

Thank you Ael for the kind appreciation 🙏🏼 Glad you liked it..

[@terihandrick2333]

Wow I am glad I found your channel. You have an excellent teaching ability! Clear and concise and you have presented content I have not seen elsewhere laying the groundwork for SQL. Great job!!

[@yeasinarafat9074]

One of the best tutorials in SQL on KZbin. Thanks a lot for your contribution ❤

[@Royal-ek4tw]

It's not a video, it's a package of all the relevant details, appreciate it mate, preparing for the interview with this video.

[@techTFQ]

Awesome bro.. good luck and thank you 🙏🏼

[@Royal-ek4tw]

@@techTFQ Thanks, Cracked interview, next round is due tomorrow

[@techTFQ]

Awesome bro.. good luck for tomorrow 👍

[@Euphoria-k6r]

I came here by shakra shamim reference by her post on linkedin and i am literally enjoying it. First kudos to shakra obviously and next to you toufiq.

[@anilkumarpasumarthi2200]

You have put things in an easy way and more practical. Great way of explanation, I thoroughly enjoyed the session.

[@vedanshpandey3738]

Best video over video to start as a beginner also for interview pov it is the best video till now i have ever seen

[@sheebaparveen3630]

Absolutely amazing video. Have watched so many videos on SQL but never such video like this where the required concepts are brilliantly explained without any dragging and just to the point. Perfect video for people who want to learn SQL in just little time. Great job. Loved this. Looking forward for more such videos.

[@techTFQ]

Thank you very much Sheeba.. So glad you liked it and found it useful.. ☺️

[@dataengineerazure2983]

​@@techTFQ, How can I have the source data such as CSV files to follow with you, the SQL course? Thank you very much in advance,

[@injera-powered]

You are the GOAT of explanation my friend thank you!

[@marcuswest4572]

Top notch content. Brilliant visual presentation. ENJOY!

[@Ji-yoon]

This video is the most useful video among other videos on KZbin for SQL. Great way of presenting things. Please make more such important videos on SQL and databases.

[@techTFQ]

Thank you and will do 🙏🏼

[@praveenkumar-nm9lv]

This video is the most useful video among other videos on KZbin for SQL. Great way of presenting things. Please make more such important videos on SQL and databases. please share the tables link with Answers for Practice with the help of your content

[@shubhamshanker2947]

Amazing video in 1 hour you will understand all the basics concepts of SQL. Otherwise rest of the videos are 3 to 4 hours long. Thank you so much for the amazing and informative content

[@ttech_official]

Congratulations on achieving 200K subscribers!!

[@techTFQ]

Thanks man.. I just saw this after your comment .. thanks again ❤️

[@ttech_official]

@@techTFQ 😍😍

[@AprajitaPandey-of2kf]

your video for SQL is simply BEST.

[@kush_chandhok]

Here, as an Economics Graduate, non computers background but enjoying learning SQL

[@darreljohnmanlugon6123]

This video helped me land a job.

[@adapureddyatchutarao1327]

Best SQL tutorial for beginners. Thank you so much

[@techTFQ]

Glad you think so bro!

[@a.kumaresan.47esan27]

Yeah it really a good innovation to learn lot of member about SQL

[@saubanpatel6972]

Best video I seen ever for learning sql

[@techTFQ]

Thank you

[@privateprivate3668]

May God bless you for providing this content for free! 🙏

[@bradboxrud9641]

Great job on this video. I'm learning a TON. Maybe 2 tons. Thanks, Thoufiq!

[@subramanianramasamy6524]

One of the best SQL Fundamental video I have seen!! You have really co ordinated every thing you can cover!! Well Done Mate!

[@P_satheesh99]

Well curated, Definitely people will understand all the concepts without any doubt as you explained with examples in this video ❤

[@vshal3880]

Bro, i have to admit you are the best SQL teacher of the KZbin even better than my offline faculty. Thank You very much man.

[@nayaz.s9286]

hi bro

[@nayaz.s9286]

where are you from

[@Memories14581]

Perfect video for a beginner 👍👍

[@techTFQ]

Glad it was helpful!

[@amanmalik8880]

best video out there for learning sql

[@koushikchoudhury2179]

Hats off to you.A real SME in true sense . Thank you for the superb explanation .

[@Dailytrolls22]

The best tutorial i have ever seen. Keep it up

[@techTFQ]

Glad it helped

[@erigelavani4162]

Thanks sir for dng videos,keep uploading more videos it will help us to learn more knowledge

[@fathimafarahna2633]

Video though long, you've made it very interesting. Explaining very eloquently without jargons & gobbledygook. Great job... Your efforts have translated into easy understanding. Keep going👍Thank you

[@techTFQ]

Thank you very much...

[@parsasreenu]

cult cut clear explanation dude'

[@mannunagar144]

It was an excellent explanation 🙂

[@damianfargoes529]

Incredible and Insight full content across al three SQl stages (beginner, Intermediate and advanced). I am a data analytics consultant with 4 years of experience in SQL and this was much helpfull during my interview prep. Just a small suggestion it would be nice if you include a session on wild cards in sql. Thanks again!

[@techTFQ]

Welcome. Noted

[@lucario3682]

@@techTFQ unable to restore given .sql files for practice

[@ambassadorforchrist9016]

It is the best video and very useful. Learnt sql. “Ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you. Matthew7:7. "the fear of the lord is the beginning of wisdom." Proverbs 9:10

[@techTFQ]

Thank you 🙏🏼 Glad this helped ..

[@samratdey6564]

Excellent! You are doing a great job dude. Hats off to your dedication and expertise. Wish our schools and colleges could atleast deliver 1% of what you are doing.

[@karanamhimabindu9671]

I'm much more interested in learning SQL from basic so I hope your videos will be helpful for me

[@karthikakarunakaran8857]

I learn join query using SQL in depth because of you thank you .it was amazing 👍 keep upload many videos like that

[@techTFQ]

Thank you and will do

[@twaca]

Great course for SQL beginner. Much appreciated!

[@techTFQ]

Glad you liked it

[@subramanianchenniappan4059]

Thanks. I am an experienced java developer . Useful for interviews

[@drashar841]

Your kind of teaching is good for people who are coming from computer background and are intermediate not for beginners. I expected step by step tutorial , for example how to create tables , inserts . step,

[@bodaashoknayak6493]

good job bro amazing explanation superb

[@ramanjaneyapadakanti9511]

Please make a vedio on complexes and queries...

[@sofiyasavanur4298]

Your explanation is really amazing, Taufeeq!

[@techTFQ]

Thank you 🙏🏼

[@lifeisagame9224]

Sir, you are a legend. The way you explain is mind blowing. Hats off to you !! Keep up the good work.

[@nguneromanus3075]

Your lesson is awesome. I envisage to transition into IT field with focus on DATA Analysis.So your video is help

[@katteboinajoshbabu3064]

First of all tq for posting this video This video is most informative content n also more useful to mine

[@techTFQ]

Thank you 🙏🏼

[@shaffumehta1405]

amazing explanation of each topic....best video on sql i have ever found ..pls upload more videos on sql

[@techTFQ]

Thank you :) Will do..

[@ivantrnski7398]

Instant subscribe. Your explanations are something else.

[@techTFQ]

Thank you Ivan 🙏🏼

[@subhapriyasanki6801]

I'm true fan of your channel❤❤❤

[@vamsikrishna-qs3vz]

Very informative and super explanation....tq very much for video plz do full SQL course......

[@techTFQ]

Thank you Vamsi 🙏🏼 And will do complete sql tutorial too

[@ketanwadnerkar1148]

U r legend sir. U understood in very easy way..GBU thanks alot and made more videos ahead.

[@hammadyasir2174]

Excellent Course i found on internet

[@peterwan1808]

This guide was extremely informative, clear, and well organized; thank you for this video! Wish you were a professor at my college!

[@SaranV-x9n]

Very good explanation and i covered all basics from one video Thank You man

[@sakthipriya8653]

Best channel for SQL, great content bro... Keep posting, looking forward ❤

[@sreeram4587-t3m]

really background music gives me so concentration. tnx a lot techTFQ. keep doing like this way

[@techTFQ]

Glad you liked it bro

[@saurabh-sharma]

Great video for quick prep, used time well to present most important SQL concepts

[@akshitkhandelwal5603]

Best informative video till now

[@techTFQ]

Thank you so much 🙏🏼

[@praveshrawat4095]

Thank You Sir........Stay Awesome Stay Positive

[@techTFQ]

Thank you buddy

[@davidjebbett6990]

Good video, learning SQL at the moment, thanks

[@abhaybhadouria6847]

best superior astonishing fascinating inspiring channel all over the KZbin for sql

[@jonkneedanger07]

Wow, best sql video by far.

[@techTFQ]

Thank you so much 🙏🏼 Glad you found this helpful ☺️

[@sumam.b9475]

Very informative and easy to follow the concepts are explained very well.

[@RazvanStanescueu]

Very nice in depth structured courses for particular commands. Thank you!

[@techTFQ]

Your welcome buddy

[@relaxingbeatz4468]

Awesome content! Best place to learn SQL if you have a very minimum understanding of sql and joints

[@AJ-yr2fc]

Thanks Taufiq! This Video is very thorough and helpful.

[@ignacioa3698]

Great stuff!!!!!! I know you have other videos which shows more detailed explanations and logic on the different JOINS. HOWEVER, in showing your JOINS examples in this video best to show the original tables (along with the table original columns) somewhere else in the screen off to the side so it's better to follow along, actually we can see table and columns names of the tables, and try to visualize it. And makes it better to follow along and actually try to replicate the exercises as well.

[@Pravin33unique95]

way of explanation truly appreciate no words. I have seen lots of videos but your way is different

[@danielwong445]

When I heard you mentioned about 'Malaysia' when updating the address table, I am glad someone knows about Malaysia 🤣🤣 Btw your teaching in SQL is great 👍👍 Showing what happen when different queries is executed 👍👍

[@dhanashreepatil2000]

you have explanation skills very good.....thanks for making such kind of videos.... 😇😇😇😇

[@vinnakotaramanjaneyulu9619]

It is very useful for beginners, thank you so much

[@techTFQ]

Your welcome buddy

[@sanchitsharma9882]

video is verry informative thank u sm👍👍👍

[@techTFQ]

Thank you so much 🙏🏼

[@battsetsegb.3315]

best video thank you very much💯💯

[@techTFQ]

Your welcome 🙏🏼 Glad you liked it

[@manikantank4107]

I liked the video very much techTFQ

[@sakshichoudhary7014]

Amazing video!!! All doubts solved

[@sivananthm6334]

Thank you soo much for too easy understanding of SQL Queries.

[@rohitpawar9434]

Genuinely , best video, thank you sir, helpful in many ways

[@techTFQ]

Thanks a lot 🙏🏼 So glad this helped 😊

[@eteekavats]

Very well explained buddy, truly appreciate it!

[@maheshmanyapuri147]

Excellent information shared ...Tq

[@ishasinfo2432]

Excellent session to learn in practical way...Thank u very much...iam expecting more sessions ....Thanks in advance

[@techTFQ]

Thank you so much 🙏🏼 Glad you liked it ☺️☺️

[@priyankamaity3290]

Thank u for the informative video, its really useful and most underrated video on KZbin!

[@pratikparbhane8677]

Thank You So Much..................✅

[@techTFQ]

You are welcome :)

[@simhabenny510]

Very happy to follow ur each and every video of urs and clean explanation, thank you soo much 🥰

[@panos7025]

Amazing explanation. Probably thhe best SQL teacher on yt. Just a question. Why on 11:25 after the CONSTRAINT is there PK_STF , FK_STAFF_SCHL AND FK_STAFF_ADDR. I understand what they stand for but why are written like that? Thanks. Amazing content again!