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Lesson Posted on 31 Jan Learn SQL Programming

In which case (realtime scenario) should you think of using Different SQL JOINs (Simple tips)

Sky IT Solutions

Lead by an IT Professional with over 35 years (since 1987) of Technical exp in Oracle Database, S/W Dev,...

Whenever you want data (columns) to be fetched from more than a single table then think of JOINS in SQL.It could be 2 or more tables.*Mostly you join using Primary key and Foreign Key1) if you want only matching data (rows) from related tables use EQUI JOIN2) if you want matching and non-matching data... read more

Whenever you want data (columns) to be fetched from more than a single table then think of JOINS in SQL.

It could be 2 or more tables.

*Mostly you join using Primary key and Foreign Key

1) if you want only matching data (rows) from related tables use EQUI JOIN

2) if you want matching and non-matching data (rows) from related tables think of OUTER JOINS

    a) LEFT and RIGHT OUTER JOINS basically means from which table you want to fetch NON-MATCHING rows

    b) FULL OUTER fetches NON-MATCHING rows from both the TABLES

3) If you want to fetch 2 rows from the same table in a SINGLE select you go in for SELF JOIN

4) Any join between to tables without '=' symbol is called NON-EQUI JOIN.

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Answered on 16/11/2022 Learn SQL Programming

Abdul Khader Shaik

Technical Project Manager with hands on Business Intelligence domain

There are many platforms like Youtube,Nptel,edx,IBM,Microsoft, Futurelearn, Coursera, Udemy, Havard, MIT etc that teach you for free. Join any course,finish it and practice it.
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Answered on 10/11/2022 Learn SQL Programming

Ramakant

Microsoft SQL Real-time work trainer

yes, just cover below few topics. 1) SQL datatypes 2) object creation and alter 3) data population (insert/update/delete) 4) system defined functions 5) JOINs read more

yes, just cover below few topics.

1)  SQL datatypes 2) object creation and alter

 3) data population (insert/update/delete)

4) system defined functions 

5) JOINs

 

 

 

 

 

 

 

 

 

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Learn SQL Programming from the Best Tutors

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Answered on 21/11/2022 Learn SQL Programming

Rashmi M.

CLEARED UGC NET 2020 AND 2021 & 2 YEAR EXPERIENCE OF IT COMPANY

you can use any of online editor (DB fiddle,Sql Fiddle) and for content you can try sql Zoo,w3 school,tutorial points or book(SQL QuickStart Guide: The Simplified Beginner's Guide),for best practice you can also hire any tutor for different varities of questions for diferent clauses and topics.
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Answered on 22/11/2022 Learn SQL Programming

Raghavendra

Tutor

Yes
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Answered on 16/11/2022 Learn SQL Programming

Abdul Khader Shaik

Technical Project Manager with hands on Business Intelligence domain

There are many ways to find a solution to this problem. 1.One simple way is to Find the difference with respect to the Maximum, average or what so ever your requirement is and place it in a new column using CASE and WHEN. 2.Other such solution is Self-Join. Use the Self-join and make it look a little... read more

There are many ways to find a solution to this problem.

1.One simple way is to Find the difference with respect to the Maximum, average or what so ever your requirement is and place it in a new column using CASE and WHEN.

2.Other such solution is Self-Join. Use the Self-join and make it look a little more complex

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Learn SQL Programming from the Best Tutors

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Answered on 16/11/2022 Learn SQL Programming

Abdul Khader Shaik

Technical Project Manager with hands on Business Intelligence domain

There are many courses out in the market but try to find a course that teaches to entire SQL. Stick to that one course/learning path only. You might feel other videos interesting on SQL and trust me you will land nowhere if you shift without finishing. A proper path is mandated while learning. Practice... read more

There are many courses out in the market but try to find a course that teaches to entire SQL. Stick to that one course/learning path only. You might feel other videos interesting on SQL and trust me you will land nowhere if you shift without finishing. A proper path is mandated while learning.

Practice what so ever you have learnt online. Practising boosts your confidence levels and makes you market ready 

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Answered on 22/11/2022 Learn SQL Programming

Raghavendra

Tutor

First learn SQL and PLSQL and then practice well.
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Answered on 09/11/2022 Learn SQL Programming

Abdul Khader Shaik

Technical Project Manager with hands on Business Intelligence domain

Sure, There are a lot of discussion forums like StackOverflow, GeeksforGeeks etc, where-in you can find the solutions to your University assignments.
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Answered on 22/11/2022 Learn SQL Programming

Raghavendra

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NO
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