[05/Sanggan/06]

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Why does the SQL Editor only show the result of the last query, even if there are multiple queries present?

To save memory and prevent information overload on the screen.

To ensure data integrity and prevent data corruption.

To improve query performance and avoid displaying irrelevant data. (correct)

To simplify the user interface and reduce clutter.

What is one reason a query might timeout?

Returning a large amount of data from the database. (correct)

Not using a WHERE clause in the query.

Using a LIMIT clause to restrict the number of rows.

Including multiple JOIN statements in the query.

What is the purpose of limiting the number of rows retrieved from the database?

To ensure that all rows are retrieved for analysis purposes.

To speed up query execution by reducing data transfer. (correct)

To simplify the SQL query syntax and make it more readable.

To prevent unauthorized access to sensitive data.

Why is it considered an unnecessary overhead to bring in a lot of data from the database?

It increases network traffic and may lead to slower performance. Signup and view all the answers

How does limiting the number of rows help in avoiding accidental selection of 'Select * From' with a table comprising millions of rows?

By reducing the chance of running resource-intensive queries. Signup and view all the answers

Running multiple queries in the SQL Editor will display all the query results at once.

False Signup and view all the answers

Limiting the number of rows in a query is done to prevent long-running queries in the database.

True Signup and view all the answers

A query might timeout if it retrieves values from the database too quickly.

False Signup and view all the answers

One reason to limit the number of rows retrieved from the database is to avoid accidentally selecting 'Select * From' with a table of millions of rows.

True Signup and view all the answers

Bringing in a lot of data from the database is considered necessary for optimizing query performance.

False Signup and view all the answers

Match the following reasons with the considerations when running queries in SQL:

To prevent long-running queries = Limiting the number of rows retrieved from the database To avoid halting the database = Avoiding accidental selection of 'Select * From' with a table of millions of rows To optimize query performance = Bringing in a lot of data from the database To improve query speed = Retrieving values from the database too quickly Signup and view all the answers

Match the following outcomes with the actions taken when running queries:

Only one query result is displayed = SQL Editor having several queries A query could timeout = Not returning values from the database or web server request timing out Preventing unnecessary overhead = Limiting the number of rows retrieved from the database Avoiding long-running queries = Bringing in a lot of data from the database Signup and view all the answers

Match the following implications with the reasons for limiting the number of rows retrieved from the database:

Preventing accidental selection of 'Select * From' = Avoiding halting the database Avoiding bringing in excessive data = Unnecessary overhead from database Optimizing query performance = Limiting row retrieval to prevent long-running queries Improving query efficiency = Reducing chances of query timeouts Signup and view all the answers

Match the following consequences with the considerations when running queries in SQL:

Halting the database = Selecting 'Select * From' with a table comprising millions of rows Long-running queries = Not limiting the number of rows retrieved from the database Accidental selection of excessive data = 'Select * From' with a large table Query timeouts = Retrieving values too quickly from the database Signup and view all the answers

Match the following actions with their purpose when running queries:

Bringing in a limited amount of data = Preventing accidental selection of 'Select * From' with a large table Limiting row retrieval = Avoiding long-running queries and unnecessary overhead Optimizing query performance = Improving query speed and efficiency Avoiding query timeouts = Retrieving values at an appropriate pace from the database Signup and view all the answers

[05/Sanggan/06]

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Questions and Answers

Why does the SQL Editor only show the result of the last query, even if there are multiple queries present?

What is one reason a query might timeout?

What is the purpose of limiting the number of rows retrieved from the database?

Why is it considered an unnecessary overhead to bring in a lot of data from the database?

How does limiting the number of rows help in avoiding accidental selection of 'Select * From' with a table comprising millions of rows?

Running multiple queries in the SQL Editor will display all the query results at once.

Limiting the number of rows in a query is done to prevent long-running queries in the database.

A query might timeout if it retrieves values from the database too quickly.

One reason to limit the number of rows retrieved from the database is to avoid accidentally selecting 'Select * From' with a table of millions of rows.

Bringing in a lot of data from the database is considered necessary for optimizing query performance.

Match the following reasons with the considerations when running queries in SQL:

Match the following outcomes with the actions taken when running queries:

Match the following implications with the reasons for limiting the number of rows retrieved from the database:

Match the following consequences with the considerations when running queries in SQL:

Match the following actions with their purpose when running queries:

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