You are writing a query about hospital encounters using the following FROM clause: FROM PAT_ENC HSP peh CLARITY_DEP dep ON peh.DEPARTMENT_ID = dep.DEPARTMENT_ID DEPARTMENT_ID is never NULL in either table, and for every DEPARTMENT_ID in PAT_ENC_HSP, there is a matching DEPARTMENT_ID in CLARITY_DEP. Assuming no additional filtering, which join type must you use? A. You must use either an INNER JOIN or a LEFT OUTER JOIN, and either would return the same results B. You must use an INNER JOIN C. You must use a LEFT OUTER JOIN D. You must use a CROSS JOIN

Q: Question 6 Consider the following table schema: CREATE TABLE members( member_id INT, first_name…

A: To Do: We need to identify the column for indexing.

Q: What is the difference between natural join and self join?

A: In step 2, I have provided complete answer to the question...

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A: Incorrect options A. Right join is a join that lists each row of a table available on the right side…

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A: The correct SQL statement is given in the below step

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A: 30 Rows returned

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Q: Please explain when to use outer join and provide an example. If your outer join has an error,…

A: Outer join in SQL is used to return the joined tuples from the two tables which satisfies the…

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A: The query seems to be missing a join condition to link the Rental table with the Film and Inventory…

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A: Cartesian Join: In relational databases, the Cartesian Join between two tables refers to as the join…

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A:

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A: Actually, SQL stands for Structured Query Language.

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A: Answer of the above question:

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A: This is a alter command in mysql to add check in already created table.

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A: Here have to determine correct option for given sql query problem.

Q: O b. Natural joins return only matched columns in the result set.

A: We need to solve:

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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.