LABEL for column headers in Google Sheets - Cell-by-Cell Formula Trace

Sample Data

This table shows products with their prices and quantities.

Cell	Value
A1	Product
B1	Price
C1	Quantity
A2	Apple
B2	1.2
C2	10
A3	Banana
B3	0.5
C3	20
A4	Cherry
B4	2.0
C4	15

Formula Trace

=ARRAYFORMULA({"Item", "Cost", "Count"; A2:C4})

Step 1: ARRAYFORMULA({"Item", "Cost", "Count"; A2:C4})

Cell Reference Map

Product

↓

Apple

↓

Banana

↓

Cherry

The formula creates a new array with new headers and original data.

Result

Item

↓

Apple

↓

Banana

↓

Cherry

The headers in row 1 are replaced by the new labels: Item, Cost, Count. The data below remains unchanged.

Sheet Trace Quiz - 3 Questions

What does the LABEL function do in this example?

A It changes the column headers to Item, Cost, Count.

B It sums the values in the Price column.

C It filters the rows with quantity over 10.

D It sorts the products alphabetically.

Key Result

Use ARRAYFORMULA with an array literal to replace headers: ARRAYFORMULA({"new_header1", "new_header2", ...; data_range})

Practice

1. What does the LABEL clause do in a Google Sheets QUERY function?

easy

A. It filters rows based on a condition.

B. It sorts the data in ascending order.

C. It changes the column headers to custom names.

D. It sums up the values in a column.

Solution

1. Step 1: Understand the purpose of LABEL

   The LABEL clause is used to rename column headers in the QUERY output.

2. Step 2: Compare with other QUERY clauses

   Filtering, sorting, and summing are done by WHERE, ORDER BY, and aggregation functions, not LABEL.

3. Final Answer:

   It changes the column headers to custom names. -> Option C

4. Quick Check:

   LABEL = rename headers [OK]

Hint: LABEL changes headers, not data content or order [OK]

Common Mistakes:

• Confusing LABEL with WHERE or ORDER BY
• Thinking LABEL filters rows
• Assuming LABEL sums values

2. Which of the following is the correct syntax to rename the first column header to "Name" using LABEL in a QUERY formula?

easy

A. =QUERY(A1:C10, "SELECT A, B LABEL A 'Name'")

B. =QUERY(A1:C10, "SELECT A, B LABEL 'Name' A")

C. =QUERY(A1:C10, "SELECT A, B LABEL A = 'Name'")

D. =QUERY(A1:C10, "SELECT A, B LABEL A : 'Name'")

Solution

1. Step 1: Recall LABEL syntax

   The correct syntax is LABEL column_identifier 'new_label' without extra symbols.

2. Step 2: Check each option

   =QUERY(A1:C10, "SELECT A, B LABEL A 'Name'") uses correct syntax: LABEL A 'Name'. Others have wrong order or symbols.

3. Final Answer:

   =QUERY(A1:C10, "SELECT A, B LABEL A 'Name'") -> Option A

4. Quick Check:

   LABEL column 'new_label' syntax [OK]

Hint: Use LABEL column 'new_label' exactly inside QUERY string [OK]

Common Mistakes:

• Putting LABEL outside the QUERY string
• Using = or : instead of space before label
• Swapping label and column order

3. Given the data in A1:B3:
Name | Score
Alice | 90
Bob | 85
What will be the output headers when using:
=QUERY(A1:B3, "SELECT A, B LABEL A 'Student', B 'Points'")?

medium

A. Student | Points

B. Name | Score

C. A | B

D. Name | Points

Solution

1. Step 1: Understand QUERY with LABEL

   The QUERY selects columns A and B and renames headers using LABEL clause.

2. Step 2: Apply LABEL renaming

   Column A header changes to 'Student', column B header changes to 'Points'.

3. Final Answer:

   Student | Points -> Option A

4. Quick Check:

   LABEL renames headers as specified [OK]

Hint: LABEL changes headers, not data rows [OK]

Common Mistakes:

• Thinking original headers remain
• Confusing column letters with headers
• Ignoring LABEL clause effect

4. You wrote this formula:
=QUERY(A1:C5, "SELECT A, B LABEL A 'Product', B 'Price'")
But the headers did not change. What is the likely error?

medium

A. The LABEL clause must come before SELECT.

B. The LABEL clause is missing commas between labels.

C. The LABEL clause requires double quotes around labels.

D. The LABEL clause must be inside the QUERY string after SELECT.

Solution

1. Step 1: Check LABEL placement

   LABEL must be inside the QUERY string after SELECT clause.

2. Step 2: Common placement error

   Users often mistakenly place the LABEL clause outside the QUERY string (e.g., =QUERY(A1:C5, "SELECT A, B") LABEL A 'Product', B 'Price'), causing it to be ignored.

3. Step 3: Identify common mistake

   This is the most likely reason headers do not change.

4. Final Answer:

   The LABEL clause must be inside the QUERY string after SELECT. -> Option D

5. Quick Check:

   LABEL inside QUERY string needed [OK]

Hint: Keep LABEL inside the QUERY string after SELECT [OK]

Common Mistakes:

• Placing LABEL outside the QUERY string
• Using commas inside LABEL clause
• Adding quotes incorrectly around labels

5. You want to use QUERY on range A1:D10 and rename columns A, C, and D to "Date", "Sales", and "Profit" respectively, but keep column B header unchanged. Which formula correctly applies LABEL for this?

hard

A. =QUERY(A1:D10, "SELECT A, B, C, D LABEL A 'Date', C 'Sales' D 'Profit'")

B. =QUERY(A1:D10, "SELECT A, B, C, D LABEL A 'Date', C 'Sales', D 'Profit'")

C. =QUERY(A1:D10, "SELECT A, B, C, D LABEL A 'Date' C 'Sales' D 'Profit'")

D. =QUERY(A1:D10, "SELECT A, B, C, D LABEL A 'Date', B 'Sales', C 'Profit'")

Solution

1. Step 1: Identify columns to rename

   Columns A, C, and D need new labels; B stays the same.

2. Step 2: Check LABEL syntax and commas

   Each label pair must be separated by commas inside LABEL clause.

3. Step 3: Verify options

   =QUERY(A1:D10, "SELECT A, B, C, D LABEL A 'Date', C 'Sales', D 'Profit'") correctly renames A, C, D with commas; others have wrong columns or missing commas.

4. Final Answer:

   =QUERY(A1:D10, "SELECT A, B, C, D LABEL A 'Date', C 'Sales', D 'Profit'") -> Option B

5. Quick Check:

   LABEL pairs separated by commas, correct columns [OK]

Hint: Separate each LABEL pair with commas inside QUERY string [OK]

Common Mistakes:

• Forgetting commas between label pairs
• Renaming wrong columns
• Missing quotes around new labels