Write the following queries in SQL: Display the list of all course sections offered in Spring 2018, along with the ID and name of each instructor teaching the section. If a section has more than one instructor, that section should appear as many times in the result as it has instructors. If a section does not have any instructor, it should still appear in the result with the instructor name set to “—”.

Q: How is the underscore character different from the % character in SQL?

A: Difference between underscore character and % character in SQL:

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A:

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Q: How does the COALESCE function compare with the ISNULL function when handling NULL values in SQL

A: The COALESCE and ISNULL functions are both used to handle NULL values in SQL. However, they have…

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A: Lets see the solution.

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A: Please refer to the following step for the complete solution of the problem above.

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Q: Question 11 Write SQL statements to answer the following question based on the ERD below. Note:…

A: The objective of the question is to write a SQL query that will list the course name, section ID,…

Q: salary is above 4000 and job_id starts with a letter “S”

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Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.