Alteryx-Core · domain
Data Manipulation
The Data Manipulation domain covers how Alteryx Designer transforms, cleans, and reshapes data inside a workflow. Questions present realistic scenarios — joining datasets, converting types, reordering or renaming fields — and ask you to choose the correct tool or predict its output. Expect tool-purpose and behavior questions rather than configuration trivia.
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What to know about Data Manipulation
You must be able to pick the right tool for a stated data goal and predict its output. The most important thing: know how each tool changes field structure and values, especially join behavior and what happens when type conversion meets non-numeric data.
Purpose and behavior of the Auto Field tool for assigning and sizing data types
Join tool configurations, including which join type preserves unmatched left records
Select tool use for renaming, reordering, dropping, and retyping fields
Consequences of converting String fields containing non-numeric values to numeric types
Watch out for
Common Data Manipulation exam traps
- ▸Assuming Auto Field always produces the smallest or most correct type; it samples values and can misjudge fields with mixed or later-arriving data.
- ▸Confusing Left, Right, and Full Outer joins when the requirement is to retain every record from one input regardless of matches.
- ▸Expecting a String-to-Integer conversion to succeed on values like 'A101'; non-numeric entries typically become null or trigger conversion errors.
Question index
All Data Manipulation questions (36)
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Which tool would you use to add a new calculated field that performs logic across multiple rows, such as calculating the difference between the current row and the previous row?
Medium2Which TWO settings in the Sort tool affect the order of the output records?
Hard3Which tool effectively removes all rows that contain a null value in a specific column?
Easy4When using the Join tool, what happens to records that do not have a match in the other input?
Medium5When using the Filter tool, what happens to records that meet the 'True' condition?
Medium6If you need to combine records from two different data streams stacked vertically, which tool should you use?
Medium7Which tool would you use to change the data type of multiple columns simultaneously?
Easy8Which tool is the most appropriate for removing whitespace from the beginning and end of a string?
Medium9Which tool is used to parse a single string field containing multiple delimited items into separate rows?
Medium10Which tool is best suited to convert a 'Long' dataset back into a 'Wide' format?
Easy11Which tool is best suited to convert data from a wide format (multiple columns) to a long format (fewer columns with header names in a single column)?
Medium12Which tool is best suited for assigning a category to records based on value ranges, such as labeling sales as 'High', 'Medium', or 'Low'?
Easy13Which tool should you use if you want to limit the number of records flowing through your workflow based on a specific position, such as the first 100 rows?
Easy14What is the primary function of the Union tool in Alteryx?
Easy15Which tool would you use to change the field names of several columns at once using a list from another file?
Easy16Which TWO tools can be used to split a single string column into multiple columns based on a delimiter?
Medium17Which tool configuration is required to append a constant value (such as a 'Report Date') to every row in a dataset?
Medium18You need to aggregate sales data to find the total sum per region. Which tool is most appropriate?
Medium19Which of the following is the most efficient method to remove duplicate rows from a dataset based on a specific unique key?
Medium20Which tool is used to create a new field that calculates the difference between two date fields in days?
Medium21Refer to the exhibit. You receive this error while using a Formula tool. What is the most likely cause?
Hard22Refer to the exhibit. The workflow runs without error, but the result column is entirely populated with 0s despite having 'Active' statuses in the input. What is the most likely reason?
Hard23Which THREE actions are commonly performed using the Data Cleansing tool?
Medium24What is the purpose of the 'Auto Field' tool?
Medium25Which tool provides the most efficient way to replace specific null values with a fixed 'Unknown' string in a categorical column?
Medium26When joining two datasets, which join type would you use to keep all records from the left input, even if there is no match in the right input?
Medium27You need to change the data type of a column from 'String' to 'Integer' because it contains numeric identifiers. What happens if the column contains non-numeric values like 'A101'?
Medium28What is the primary function of the 'Select' tool in an Alteryx workflow?
Easy29What is the result of using the Unique tool on a field with duplicate values?
Medium30Refer to the exhibit. You are using a Formula tool to calculate total revenue, but the workflow throws this error. What is the most likely cause?
Easy31Which tool configuration is the most efficient way to convert multiple column headers into a single 'Name' and 'Value' column format?
Medium32You have a dataset where dates are formatted as 'DD/MM/YYYY', but Alteryx requires 'YYYY-MM-DD'. Which tool should you use to convert this format most efficiently?
Easy33Which tool is the most efficient choice for transposing data from a wide format to a long format while preserving specific 'key' columns?
Medium34Which TWO of the following are true about the Summarize tool?
Medium35Which of these is the most effective way to handle a large dataset where you need to calculate the running total of a numeric field partitioned by region?
Hard36Which tool allows you to select, rename, and change the order of columns in your dataset?
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Frequently asked questions
- What does the Data Manipulation domain cover on the Alteryx-Core exam?
- You must be able to pick the right tool for a stated data goal and predict its output. The most important thing: know how each tool changes field structure and values, especially join behavior and what happens when type conversion meets non-numeric data.
- How many questions are in this domain?
- This page lists all 36 Data Manipulation questions in the Alteryx-Core question bank. The actual exam draws from this domain proportionally to its weighting in the official exam blueprint.
- What is the best way to practise this domain?
- Start with a short focused session (10 questions) to identify gaps, then work through explanations. Repeat with a longer session once the weak areas feel solid.
- Can I practise only Data Manipulation questions?
- Yes — the session launcher on this page filters questions to this domain only. Choose any session length for inline explanations and scoring.