I am  SQL Developer and are you ? Hi all,  I am Narendra and I have about 7+ years of experience in the SQL and PL/SQL. And in this 7 years of experience I have faced 18 companies for interview and I have cleared 13 companies of them. These 100 question interview question and answer were common in all that companies . If you know all answer, but you don't know how to explain them, then what is important of  knowing them. So Learn how to answer the SQL interview question. This 100+ interview question contains all theory and logic of SQL, so read it carefully. I have put all my knowledge and experience to make 100 + most important and common SQL Questions and answer for you only I want to help each one of you to succeed in the SQL Job Interview. If you want after interview question and answer we can conduct one short round of interview. And my friends at the end of this course, you will know all the way  to answer the most common SQL interview questions. So are you ready to prepare the most common question and  answers of SQL. Take this course and enjoy the best way of learning SQL. See you inside the course! Some of SQL Question 1. What is SQL 2. what is DBMS 3. How to Find Even number of rows from table 4. How to Find Odd number of rows from table 5. How to find multiple rows from dual table 6. What is rowid and rownum 7. Select FIRST n records from a table 8. Select LAST n records from a table 9. Explain types of join 10. What is primary key 11. What is foreign key? 12.What is a view 13. What is Cursor 14. What is subquery in sql 15. What is a constraint 16. What is Self-Join? 17. What is cross join 18. What is an ALIAS command 19. How to get 6 Max salaries ? 20. Can you write return keyword in procedure Please don't waste your time to search answer of all this question on internet.

You will learn to write SQL queries like a pro by building a real-world blog database Here is a list of some of the things you will get after this course: How to create your first database How to create and delete your tables How to perform CRUD operations How to use SQL complex constraints Running your first query learn how to use Alters to tweak your columns and tables learn and perform functions create and understand complicated joins and unions and more.. More Specifically : 1-create database 2-create and deleting tables 3-insert 4-update and delete 5-data types 6-Conditional & comparison operators 7-basic queries 8-constraints (primary key, foreign key, and indexes) 9-functions (SUM-MIN-AVG-MAX-COUNT) 10-clauses (WHERE, ORDER by, DISTRICT, IN, GROUP By,) 11-alters 12-aliases 13-joins (INNER-RIGHT-LEFT) 14-UNIONS 15-wild cards 16-views 17-creating functions 18-triggers Pretty cool huh? I hope you are ready for this journey :)

The volume of data available is huge and increasing daily. Structured Query Language -SQL (pronounced as sequel) is the standard language used to communicate and interact with data stored in relational management database systems like Microsoft  SQL Server Oracle, PostgreSQL,MySQL etc. Different database management systems have their own proprietary  version of the SQL language  but they all conform to using some commands in SQL the same way.   Microsoft SQL Server's version of SQL is known as Transact-SQL  (T-SQL). In this course you will learn the basics of the SQL language and Transact-SQL since  both use certain commands in the same way. What You will learn includes: Installing SQL Server Install SSMS Basic Database  Concepts Creating Database Creating Table Creating Views Creating stored procedures Reading data from a database Updating database records Backing up database Deleting Records Truncating Table Dropping Table Dropping Database Restore Database

SQL is one of the most important tools in a Data Scientist's toolbox. With the ever-increasing size of data in recent years, the ability to understand databases, to extract information and meaning from them has become a basic necessity for anyone working in the field. This Course has been created in such a manner that by the end, even a novice with no background in SQL would be able to write effective queries for complex real-life problems. The Content consists of exhaustive Video Lectures that contain: Concept Introduction: Here you will get a walkthrough of the SQL clauses/concepts. Visual Demo: This will help you intuitively grasp the functionality of each SQL clause. Code Demo: Coding sessions will help you learn to write queries in a real SQL environment. In addition, we will provide plenty of checkpoints in term of Quizzes and Assignments to help you grasp the content better. End-to-end projects will help you understand how SQL works in real business scenarios. See you in class!

SQL Loader is an Oracle Utility that's been around almost as long as the Oracle database itself. It is an efficient and flexible tool that you can use to load large amounts of data into an Oracle database. In simple terms, SQL Loader reads the data from flat files and inserts the data into one or more database tables. If you would like to learn about SQL Loader, you have landed in the right course!!! This course explains the concepts using 21+ Examples, what else can you expect? Students will be learning the below skills: Understand the functionality of SQL Loader Load data from Fixed Width files, Delimited Data and many    other data format types. Selectively loading the data Transforming the data during Load Direct Path Loads Loading Large objects Loading Objects and Collections Performance tips...

Have you heard that database skills are essential for developers to be skilled in and understand? Are you wanting to understand SQL and databases in general, but don't know where to start? Maybe you have a pressing need to learn about Database Design and/or Data Analysis but have not found a good place to learn. Or perhaps you are a developer who wants to improve your career options by having skills in SQL and MySQL, one of the worlds most popular databases. Whatever the reason you have arrived here, this course will... Help you understand and apply SQL with MySQL, including Database Design and Data Analysis. Having database skills is absolutely vital for developers to avoid getting left behind and to maximise job and consulting opportunities. Key concepts you will learn and work with in this course. SQL (Structured Query Language - very much an in-demand technology). MySQL (one of the worlds most popular and widely used databases). Database Design Data Analysis The database design section (normalization and relationships) isn't covered in the majority of SQL courses on Udemy.  You will struggle to find another MySQL course that has a section on this.   This section alone, will give you a huge edge over other applicants for jobs. Through the course you will go through creating an example database for a cinema online booking system using concepts taught in the database design section. Creating, Modifying and Deleting Tables in a Database (DDL) Inserting, Updating and Deleting Data from Tables (DML) Select Queries Joins Aggregate Functions Subqueries Database Design Creating Databases. In addition there are installation videos covering MySQL on Windows, Mac or Linux. Not only does the course teach you SQL, but there are multiple exercises for you to try with video solutions to further help you understand the material. Also note that while MySQL is the database of choice in this course, the SQL skills you acquire will work largely with any database. Why enrolling in this course is the best decision you can make. Become skilled as a database developer generally needs you to learn SQL, a database, and then database design.  Often this will require multiple courses.  However you learn all those topics, and data analysis in this one course. Jon Avis, the instructor, has 4 years experience working as an IT Systems Engineer, and works with SQL and Databases everyday.  Part of his role as a Systems Engineer is to teach complex, technical subjects to colleagues which makes him the ideal instructor for this course. Essentially, you are learning from someone who has all the professional training, skills, and experience needed to  teach you how to become proficient with SQL, MySQL and Database design as quickly as possible. If you are ready to get that first paid programming job, or to move up to a more senior programming position, then this course is for you! After completing this course, you will have the necessary skills to be able to use SQL confidently, have a solid understanding of MySQL and be skilled in database design. The sooner you sign up for this course, the sooner you will have the skills and knowledge you need to increase your job or consulting opportunities. SQL and MySQL skills are in high demand, as is Database Design, and you will understand and be able to use both after going through this course. Your new job or consulting opportunity awaits! Why not get started today? Click the Signup button to sign up for the course!

It is becoming ever more important that companies make data-driven decisions . With big data and data science on the rise, we have more data than we know what to do with. One of the basic languages of data analytics is SQL, which is used for many popular databases including MySQL , Postgres , SQLite , Microsoft SQL Server , Oracle , and even big data solutions like Hive and Cassandra . I’m going to let you in on a little secret. Most high-level marketers and product managers at big tech companies know how to manipulate data to gain important insights. No longer do you have to wait around the entire day for some software engineer to answer your questions - now you can find the answers directly, by yourself, using SQL! In this course, SQL for marketers , we'll start from the basics - installing SQL onto your Mac, Linux, or Windows machine and explaining what a relational database is. Next, we'll look at basic tasks like creating tables and loading data into those tables. We will look at a wide variety of SQL commands and I will show you how to speed things up using indexes . Once you know all the SQL commands we will start doing advanced examples - answering questions marketers and business people often have, like where are customers dropping off in our sales funnel ? And which of our locations has the highest revenue ? In the last section, we'll do Advanced SQL queries on Spark , the big data framework that is the successor to MapReduce and also runs on top of Hadoop . I will teach you how to install Spark, create a cluster very quickly on Amazon EC2 , and run SQL queries, allowing you to apply everything you learned up until this point in a big data environment. Do you want to know how to optimize your sales funnel using SQL, look at the seasonal trends in your industry, and run a SQL query on Hadoop? Then join me now in my new class, SQL for marketers! Dominate data analytics, data science, and big data! TIPS (for getting through the course): Watch it at 2x. Take handwritten notes. This will drastically increase your ability to retain the information. Ask lots of questions on the discussion board. The more the better! Write code yourself, don't just sit there and look at my code.

Master One of the Most In-demand Skills for Data Analysts in 2020! This guided bootcamp will take absolute beginners through the basics of SQL to an ability to write queries with confidence. Nowadays, with so many companies relying on big data analytics for decision-making, analysts with good SQL skills are some of the most sought after by employers. Whether you're in marketing, operations or finance, this course will help you gain lots of practice and confidence in your SQL skills. The Practical SQL Bootcamp for Data Analysts and Data Scientists course is a step-by-step guide to learning the fundamental SQL commands commonly used by analysts and future data scientists in their day-to-day tasks. The course walks you through each SQL command, provides examples for applying such command in typical query that analysts use in their day-to-day job and then allows you to apply or test what you've learned through exercises and challenges. Bonuses available: SUPER BONUS 1: SQL Oral Interview Test Prep Questions SUPER BONUS 2: SQL Technical Written Interview Prep Questions Who is this course for? Absolute beginners in SQL can take this course You'll go from not knowing anything about SQL to being someone ready for SQL technical interview and confident with their SQL skills. Most business or data analyst and data scientist positions will test your SQL skills, so this course will equip you with the essential skills you need for your job! Aspiring business analysts, data analysts or data scientists This course is for students who are aspiring to be analysts. You'll learn the essential commands used by actual business analysts, data analysts or data scientists in their day-to-day jobs.  You will be doing a lot of data manipulation and analysis! Those who want to learn PostgreSQL! PostgreSQL is arguably the most advanced and powerful open-source enterprise class relational database system. It's also free! A lot of companies use PostgreSQL. The commands that you will learn in this course do apply to other relational databases as well such as MySQL. What this course is NOT? The course is not going to teach you how to create a database or how to manage database. If you find yourself in tutorials talking about things like: CREATE DATABASE, DROP DATABASE, INSERTING DATA, etc. --- you've gone down the wrong rabbit hole! These tasks are usually done by engineers and database administrators ---- not analysts or data scientists.  Pick tutorials that are geared towards DATA ANALYSIS. Ok, you'll learn how to code using SQL and at the same time learn how to think critically when analyzing data! By the end of the course, you'll learn how to: Retrieve data from specific tables Filter rows or get the desired observations for your analysis Advanced filter functions that include pattern matching Limit the output to a number of rows rather than show the full dataset Order or sort the output based on desired columns Be able to join multiple tables together to get the needed attributes Conduct arithmetic operations Rename your attributes Summarize data by performing data aggregations Performing data aggregations and arithmetic operations by subgroups How to structure data for analysis Learn how to use subquery to make your coding and querying a lot more efficient Be able to use if/then statements Data cleaning such as extracting a subset of string from the left, right or middle Concatenating columns New Bonus! SQL Interview Questions *Please refer to the class curriculum below for the particular SQL commands covered. LEARN TO CODE BY DOING Start coding like analysts do with hands on exercises and challenges that use real-world database. The examples are meant to help you understand the concept in a practical way; the exercises are meant to help you apply what you've learned; and the challenges are meant to further test your knowledge and perfect your new skills. GET PERSONALIZED FEEDBACK FROM THE INSTRUCTOR The instructor aims to assist each student in their learning. The instructor gives her personalized feedback to the student's weekly challenge (upon submission). Solutions are also available for students to review. GET ASSISTANCE FROM THE INSTRUCTOR AS NEEDED No need to feel stuck on any concept or challenge! You can easily send a message to the instructor or send an email if you need help. Our students are on our priority list! JOIN THE COMMUNITY OF LEARNERS Join the community of students and learn SQL together, and maybe meet new friends along the way. GET A COURSE CERTIFICATE Students who pass all the challenges will get a course certificate! You may also get LinkedIn recommendation (upon request) Hoping to embark on a data analyst or data scientist career? Learn SQL -- one of the most in-demand data analytic skills today. As a previous Professor and now a Statistics/Analytics content manager for an education tech company, I use a teaching method that makes it super easy for students to learn. I teach SQL in a practical way so I explain concepts with examples, then you have an opportunity to apply what you've learned through exercises and further test your knowledge with weekly challenges. WHAT SOME OF MY STUDENTS SAY ABOUT THE COURSE: "It was a great course and very easy to follow especially for someone who had no experience in SQL. The examples given were simple and Dr. Cas breaks it down really well so you can understand better. She walks you through all the different queries thoroughly and also writes down some helpful hints if you get stuck. She was also very attentive when I got stuck on one of the challenges and reached out to her one late night. She helped me understand it better by giving me more guidance and helped me think outside the box. Overall, this was a great course to take and now I have another skill under my belt all thanks to Dr. Cas! Thanks for everything!" - Karla Flores , Senior Financial Analyst, Adobe (California, USA) "Excellent course and terrific inputs about every query. Majority of the job interviews that I appeared before this course had questions on SQL and I used to mess it up since I didn't have my basics strong.This course not just helped me with the basics but also with the advanced concepts. It's absolutely brilliant. I just feel completely charged up to attend any DS interview where SQL is a skill set that is asked. My motivation was not to give any chance to the interviewer/recruiter is to not provide any more opportunities to them to reject me and this helped me at least get to that stage. Rest of the outcome depends on the practice that I do. Only need some practice on the Data Cleaning section else I think I am prepared from an interview standpoint. Thanks for all the inputs and support Ava." - R Suraj Kumar "This was my first time taking an online data analysis class outside an academic setting. I worried about how the design would work for me as a working professional and if it would enable me grasp the material, but I must say that everything about the online course was smooth, convenient, and enjoyable. The concise tutorial videos, quizzes with solutions and availability of the instructor, made it easy for me to understand the topics. The method, order, and scheduling were accommodating and in my opinion, makes it convenient for anyone, anywhere to take the course, and of course, the content was very useful to me. I'm glad I took this course and I will strongly recommend it and others to follow, to anyone trying to develop more skills for data analysis. " - Clare Ofodile , Project Manager, Quality Assurance and Research Development Agency Nigeria (Lagos, Nigeria) "I like this course as it is very easy to understand and relevant for a beginner like me. I wish I could have some more courses like this one. I really enjoyed it and I started to like SQL more. A big thank you to my teacher!" - Ana Rotari This instructor is highly effective and efficient in getting the critical knowledge across. Unlike other courses, this one did not drag. Time was well managed with the instructor's teaching approach. In just three and a half hours, this course can be a career changing investment. – Jose Floresca Jr. "This course sparks my most interest in SQL and you MUST take to get strong foundation in SQL. Teacher Ava provides a very organized and informative course which is worth best 5 ***** (stars). And more than that, she always be there to support you to clarify your confusion. Believe me, after this course, your level of confidence improves a lot and exceed your expectation. For me, I'd like to attend more SQL courses from Ava in next levels. I hope she will have some good news." – Dannie Le

Oracle SQL is a necessary skill for any Oracle professional. In this course we overs advanced aspects of coding using SQL in an Oracle Database 12c environment.The following key topics that can help you develop your Oracle SQL expertise including database concurrency transactions Oracle-specific schema objects such as indexes and PL/SQL procedures, functions, and packages; and table partitioning. Setting up the Oracle Database 12c environment Writing subqueries and inline views Creating table indexes to boost query performance Using the Oracle Data Dictionary Database transactions Creating sequences and triggers Table partitioning benefits Using LIST, RANGE, and HASH partitions

IBM Db2 is a family of related data management products, including relational database servers, developed and marketed by IBM. This course provides you the basic understanding of concepts of database, database installation and management.At the end of the course you should be equipped with some understanding of database management concepts. In this course we will interact with the DB2 Server and run some SQL queries on the database. We will create a database and multiple tables and perform some data manipulation and CRUD operations on the database. Topics include: Installing IBM DB2  Server Installing IBM Data Studio Basic Database  Concepts Creating Database Creating Tables Inserting Records into Tables Reading data from a database Updating database records Deleting Records Truncating Table Dropping Table Aggregate Functions Sorting Data Filtering Data Excluding Duplicate Records Using LIKE Operator and WHERE clause