[05/Indigirka/03]

Which type of SQL queries can be used to customize the appearance and behavior of a specific column?

Subqueries
Aggregate Functions
Virtual Calculated Columns (correct)
Nested Queries

What is an example of customizing the appearance and behavior of a specific column in SQL?

CAST(recovery_rate) as float (correct)
SUM(sales) as total_sales
SELECT * FROM table_name
ORDER BY column_name

Which type of functions are not allowed in calculated columns in SQL?

Date Functions
Mathematical Functions
Aggregate Functions (correct)
String Functions

Aggregate functions can be used in calculated columns in SQL.

False (B) Signup and view all the answers

Calculated columns in SQL can change the appearance and behavior of a specific column.

True (A) Signup and view all the answers

Customizing the appearance and behavior of a specific column in SQL can be achieved through aggregate functions.

False (B) Signup and view all the answers

Match the following SQL functions with their usage in creating virtual calculated columns:

CAST(column_name AS data_type) = Changing the data type of a specific column CONCAT(column1, column2) = Concatenating values from two columns DATEADD(interval, number, column_name) = Adding a specific interval to date values in a column UPPER(column_name) = Converting the text in a column to uppercase Signup and view all the answers

Match the following SQL clauses with their role in creating virtual calculated columns:

WHERE = Filtering rows based on a condition CASE = Conditional logic to derive new values for a column GROUP BY = Grouping rows and applying aggregate functions HAVING = Filtering groups based on a condition Signup and view all the answers

Match the following SQL statement types with their usage in creating virtual calculated columns:

SELECT = Retrieving data and computing new columns UPDATE = Modifying existing data including calculated column values INSERT = Adding new rows with computed column values DELETE = Removing rows without affecting calculated columns Signup and view all the answers

What are virtual calculated columns in Flow.BI used for?

Creating new columns in a dataset that are not present in the underlying data source (A) Signup and view all the answers

Where can virtual calculated columns be created in Flow.BI?

In the Explore page (A) Signup and view all the answers

What is the first step to create a virtual calculated column in Flow.BI?

Click the Columns tab (C) Signup and view all the answers

What should be done before using virtual calculated columns in production according to the tips provided?

Document the virtual calculated columns (B) Signup and view all the answers

What is a recommended practice for naming virtual calculated columns?

Give clear and concise names (B) Signup and view all the answers

Which page in Flow.BI should be accessed to enter the SQL expression for a virtual calculated column?

Create Column dialog box (D) Signup and view all the answers

What type of function should be used to define virtual calculated columns?

Descriptive SQL expressions (D) Signup and view all the answers

2

Use vague and ambiguous names for the columns. (B) Signup and view all the answers

What is recommended when creating virtual calculated columns?

Use descriptive SQL expressions. (B) Signup and view all the answers

What is the first step to create a virtual calculated column in Flow.BI?

Click the Columns tab. (B) Signup and view all the answers

What should be done before using virtual calculated columns in production according to the tips provided?

Test your virtual calculated columns thoroughly before using them in production. (B) Signup and view all the answers

Virtual calculated columns in Flow.BI are created using SQL expressions.

True (A) Signup and view all the answers

Virtual calculated columns can only be used to combine existing columns in new ways.

False (B) Signup and view all the answers

To create a virtual calculated column, click the Rows tab and then click the Create button.

False (B) Signup and view all the answers

You should test your virtual calculated columns thoroughly before using them in production, according to the tips provided.

True (A) Signup and view all the answers

Aggregate functions can be used in virtual calculated columns in Flow.BI.

True (A) Signup and view all the answers

Descriptive SQL expressions should not be used to define virtual calculated columns.

False (B) Signup and view all the answers

Virtual calculated columns cannot be used in charts, dashboards, and reports in Flow.BI.

False (B) Signup and view all the answers

Virtual calculated columns in Flow.BI are not a recommended tool for exploring and visualizing data.

False (B) Signup and view all the answers

You should give your virtual calculated columns clear and concise names, according to the tips provided.

True (A) Signup and view all the answers

Virtual calculated columns can only be created in the Flow.BI Explore page.

False (B) Signup and view all the answers

To define a virtual calculated column, enter a name and description in the Create Column dialog box, but do not enter an SQL expression.

False (B) Signup and view all the answers

Documenting your virtual calculated columns is not a recommended practice according to the tips provided.

False (B) Signup and view all the answers

Match the following with their role in creating virtual calculated columns in Flow.BI:

Click the Create button = Initiates the creation of a virtual calculated column Enter the SQL expression = Defines the logic for the virtual calculated column Click the Columns tab = Accesses the area for creating virtual calculated columns Give clear and concise names = Recommended practice for naming virtual calculated columns Signup and view all the answers

Match the following with their usage in using virtual calculated columns in Flow.BI:

Charts, dashboards, and reports = Where virtual calculated columns can be used Testing thoroughly = Recommended before using virtual calculated columns in production Combining existing columns = One of the purposes of virtual calculated columns Extending capabilities of Flow.BI = One of the benefits of using virtual calculated columns Signup and view all the answers

Match the following with their recommendations for using virtual calculated columns in Flow.BI:

Descriptive SQL expressions = Recommended for defining virtual calculated columns Documenting = Recommended practice for virtual calculated columns Clear and concise names = Recommended for naming virtual calculated columns Testing thoroughly = Recommended before using virtual calculated columns in production Signup and view all the answers

[05/Indigirka/03]

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Questions and Answers

Which type of SQL queries can be used to customize the appearance and behavior of a specific column?

What is an example of customizing the appearance and behavior of a specific column in SQL?

Which type of functions are not allowed in calculated columns in SQL?

Aggregate functions can be used in calculated columns in SQL.

Calculated columns in SQL can change the appearance and behavior of a specific column.

Customizing the appearance and behavior of a specific column in SQL can be achieved through aggregate functions.

Match the following SQL functions with their usage in creating virtual calculated columns:

Match the following SQL clauses with their role in creating virtual calculated columns:

Match the following SQL statement types with their usage in creating virtual calculated columns:

What are virtual calculated columns in Flow.BI used for?

Where can virtual calculated columns be created in Flow.BI?

What is the first step to create a virtual calculated column in Flow.BI?

What should be done before using virtual calculated columns in production according to the tips provided?

What is a recommended practice for naming virtual calculated columns?

Which page in Flow.BI should be accessed to enter the SQL expression for a virtual calculated column?

What type of function should be used to define virtual calculated columns?

2

What is recommended when creating virtual calculated columns?

What is the first step to create a virtual calculated column in Flow.BI?

What should be done before using virtual calculated columns in production according to the tips provided?

Virtual calculated columns in Flow.BI are created using SQL expressions.

Virtual calculated columns can only be used to combine existing columns in new ways.

To create a virtual calculated column, click the Rows tab and then click the Create button.

You should test your virtual calculated columns thoroughly before using them in production, according to the tips provided.

Aggregate functions can be used in virtual calculated columns in Flow.BI.

Descriptive SQL expressions should not be used to define virtual calculated columns.

Virtual calculated columns cannot be used in charts, dashboards, and reports in Flow.BI.

Virtual calculated columns in Flow.BI are not a recommended tool for exploring and visualizing data.

You should give your virtual calculated columns clear and concise names, according to the tips provided.

Virtual calculated columns can only be created in the Flow.BI Explore page.

To define a virtual calculated column, enter a name and description in the Create Column dialog box, but do not enter an SQL expression.

Documenting your virtual calculated columns is not a recommended practice according to the tips provided.

Match the following with their role in creating virtual calculated columns in Flow.BI:

Match the following with their usage in using virtual calculated columns in Flow.BI:

Match the following with their recommendations for using virtual calculated columns in Flow.BI:

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