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1. www.baeldung.com › sql › select-conditional-logicHow to Execute an IF…THEN Logic in an SQL SELECT Statement

   www.baeldung.com › sql › select-conditional-logic

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   1 day ago · Then, we use CASE with WHEN and THEN to input remarks based on the grade column. For example, if the grade column has the value A+, then the remarks in the grade_remarks column will be Super. 3. Using IIF () We can also use the IIF () function to perform IF-THEN logic in SQL and MySQL with slight syntax modification.

2. cs50.harvard.edu › sql › 2023Lecture 0 - CS50's Introduction to Databases with SQL

   cs50.harvard.edu › sql › 2023

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   5 days ago · Introduction. Databases (and SQL) are tools that can be used to interact with, store, and manage information. Although the tools we’re using in this course are new, a database is an age-old idea. Look at this diagram from a few thousand years ago. It has rows and columns, and seems to contain stipends for workers at a temple.

3. www.splunk.com › en_us › blogSQL for Data Science: Introduction & Tutorial | Splunk

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   2 days ago · Introduction to SQL. Structured Query Language, or SQL, is a programming language used for managing relational databases. It allows users to store, manipulate, and retrieve data stored in the database. With the increasing demand for data-driven decision-making and big data analytics, knowledge of SQL has become an essential skill for data ...

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5. learnsql.com › blog › sql-server-practice-exercises15 SQL Server Practice Exercises with Solutions - LearnSQL.com

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   1 day ago · These 15 beginner-friendly T-SQL exercises are perfect for getting the hang of the basics. (If you’re wondering, T-SQL is the SQL dialect used in SQL Server databases.) The exercises are taken from our interactive course SQL Practice Set in MS SQL Server. This is a T-SQL practice course for beginners working with SQL Server.

6. cs50.harvard.edu › sql › 2023Lecture 1 - CS50's Introduction to Databases with SQL

   cs50.harvard.edu › sql › 2023

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   5 days ago · Introduction. Databases can have multiple tables. Last class, we saw a database of books longlisted, or nominated, for the International Booker Prize. We will now see that database has many different tables inside it — for books, authors, publishers and so on. First, open up the database using SQLite in the terminal of your Codespace.

7. www.geeksforgeeks.org › sql-for-data-scienceSQL for Data Science - GeeksforGeeks

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   3 days ago · SQL is a standard database language used to communicate with databases. It allows easy access to the database and is used to manipulate database data. SQL stands for Structured Query Language. It was developed by IBM in the 1970s.

8. People also ask

   What are the benefits of using SQL?

   • SQL offers two main advantages over older read–write APIs such as ISAM or VSAM. Firstly, it introduced the concept of accessing many records with one single command. Secondly, it eliminates the need to specify how to reach a record, e.g. with or without an index .

   SQL - Wikipedia

   en.wikipedia.org/wiki/SQL

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   What is the best way to learn SQL?

   • The best way to learn SQL is through practice. Now, how you will start learning it can be a different story and it depends on your learning style, on the amount of time and money you have to commit to learning, and on your end goals. In general, the most common way to start learning SQL for most people will be through an online course.

   The Best Way To Learn SQL: an Easy Way to Learn - BitDegree.org Onlin…

   www.bitdegree.org/tutorials/best-way-to-learn-sql/

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   What is the purpose of SQL?

   • SQL is the most common language for extracting and organising data that is stored in a relational database. A database is a table that consists of rows and columns. SQL is the language of databases. It facilitates retrieving specific information from databases that are further used for analysis.

   What is SQL & How Does It Work? A Guide to Structured Query Langua…

   www.springboard.com/blog/data-analytics/what-is-sql/

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   What are the advantages of using SQL over older read-write APIs?

   • SQL offers two main advantages over older read–write APIs such as ISAM or VSAM. Firstly, it introduced the concept of accessing many records with one single command. Secondly, it eliminates the need to specify how to reach a record, e.g. with or without an index .

   SQL - Wikipedia

   en.wikipedia.org/wiki/SQL

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9. www.analyticsvidhya.com › blog › 2021A Detailed Guide on SQL Query Optimization - Analytics Vidhya

   www.analyticsvidhya.com › blog › 2021

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   2 days ago · SQL query optimization is a crucial process for ensuring the efficient performance of database systems. By enhancing query execution time, reducing resource consumption, and improving overall system scalability, optimization plays a key role in delivering a seamless user experience.