REGEXMATCH and REGEXEXTRACT in Google Sheets - Cheat Sheet & Quick Revision

Recall & Review

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What does the REGEXMATCH function do in Google Sheets?

REGEXMATCH checks if a text matches a pattern you give it. It returns TRUE if it matches, and FALSE if it does not.

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How does REGEXEXTRACT work in Google Sheets?

REGEXEXTRACT finds and returns the part of the text that matches the pattern you give. If nothing matches, it returns an error.

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Example: What will =REGEXMATCH("apple pie", "apple") return?

This will return TRUE because the text "apple pie" contains the word "apple" which matches the pattern.

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Example: What will =REGEXEXTRACT("Order #12345", "\d+") return?

This extracts the first group of digits from the text. It will return 12345.

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What happens if REGEXEXTRACT finds no match?

If no match is found, REGEXEXTRACT returns an #N/A error because it cannot extract anything.

What does REGEXMATCH return when the pattern matches the text?

A FALSE

B The matching text

C TRUE

D An error

REGEXMATCH returns TRUE if the pattern matches the text.

Which function extracts the matching part of text based on a pattern?

A REGEXEXTRACT

B SEARCH

C REGEXREPLACE

D REGEXMATCH

REGEXEXTRACT returns the part of the text that matches the pattern.

What will =REGEXMATCH("hello world", "world") return?

A FALSE

B TRUE

C world

D #N/A error

The text contains "world", so REGEXMATCH returns TRUE.

What does \d+ mean in a regex pattern?

A One or more digits

B One or more letters

C Any character

D Whitespace

\d+ means one or more digits (numbers).

If REGEXEXTRACT does not find a match, what happens?

A Returns empty string

B Returns FALSE

C Returns TRUE

D Returns #N/A error

REGEXEXTRACT returns a #N/A error if no match is found.

Explain how you would use REGEXMATCH to check if a cell contains the word "cat".

Think about how to write the pattern and what the function returns.

Describe a situation where REGEXEXTRACT would be useful and how it works.

Consider extracting numbers or words from a longer text.

Practice

1. What does the formula =REGEXMATCH("apple123", "\d+") return in Google Sheets?

easy

A. TRUE

B. FALSE

C. apple123

D. Error

Solution

1. Step 1: Understand REGEXMATCH function

   REGEXMATCH checks if the text contains a pattern and returns TRUE or FALSE.

2. Step 2: Analyze the pattern "\d+" on "apple123"

   "\d+" means one or more digits. "apple123" contains digits "123", so it matches.

3. Final Answer:

   TRUE -> Option A

4. Quick Check:

   Digits found = TRUE [OK]

Hint: REGEXMATCH returns TRUE if pattern exists anywhere in text [OK]

Common Mistakes:

• Thinking REGEXMATCH extracts text instead of TRUE/FALSE
• Confusing \d+ with matching letters
• Expecting the whole text to match pattern

2. Which of these formulas correctly extracts the first sequence of digits from cell A1 using REGEXEXTRACT?

easy

A. =REGEXMATCH(A1, "\d+")

B. =REGEXEXTRACT(A1, "[a-zA-Z]+")

C. =REGEXEXTRACT(A1, "\w+")

D. =REGEXEXTRACT(A1, "\d+")

Solution

1. Step 1: Identify the goal - extract digits

   We want to extract digits, so the pattern should match digits: "\d+".

2. Step 2: Check each option

   =REGEXEXTRACT(A1, "\d+") uses REGEXEXTRACT with "\d+" which extracts digits correctly. Others extract letters or use REGEXMATCH which returns TRUE/FALSE.

3. Final Answer:

   =REGEXEXTRACT(A1, "\d+") -> Option D

4. Quick Check:

   Digits extraction = =REGEXEXTRACT(A1, "\d+") [OK]

Hint: Use \d+ inside REGEXEXTRACT to get digits [OK]

Common Mistakes:

• Using REGEXMATCH instead of REGEXEXTRACT to get text
• Using letter patterns when digits are needed
• Wrong pattern syntax like missing escape \

3. Given cell A1 contains "Order #12345: shipped", what is the result of =REGEXEXTRACT(A1, "#(\d+)")?

medium

A. Order

B. #12345

C. 12345

D. Error

Solution

1. Step 1: Understand the pattern "#(\d+)"

   The pattern looks for a '#' followed by digits. The parentheses capture only the digits.

2. Step 2: Apply REGEXEXTRACT on "Order #12345: shipped"

   The formula extracts the digits after '#', which is "12345".

3. Final Answer:

   12345 -> Option C

4. Quick Check:

   Captured digits after # = 12345 [OK]

Hint: Parentheses capture only the part you want extracted [OK]

Common Mistakes:

• Expecting the # symbol to be included in output
• Not using parentheses to capture group
• Confusing REGEXMATCH output with REGEXEXTRACT

4. Why does the formula =REGEXEXTRACT("abc123", "[0-9]") return only "1" instead of "123"? How to fix it?

medium

A. REGEXEXTRACT cannot extract digits; use REGEXMATCH instead

B. Pattern matches only one digit; use "[0-9]+" to match all digits

C. Formula syntax is wrong; remove quotes around pattern

D. The text "abc123" has no digits; change text input

Solution

1. Step 1: Analyze the pattern "[0-9]"

   This pattern matches exactly one digit character, so REGEXEXTRACT returns only the first digit "1".

2. Step 2: Fix pattern to match all digits

   Adding + quantifier as "[0-9]+" matches one or more digits, extracting "123".

3. Final Answer:

   Pattern matches only one digit; use "[0-9]+" to match all digits -> Option B

4. Quick Check:

   Use + to match multiple characters [OK]

Hint: Add + to match multiple characters, not just one [OK]

Common Mistakes:

• Using REGEXMATCH instead of REGEXEXTRACT to get text
• Removing quotes around pattern causing syntax error
• Assuming pattern matches all digits without +

5. You have a list of emails in column A. Which formula extracts the username (text before @) from cell A2, assuming usernames can have letters, digits, dots, and underscores?

hard

A. =REGEXEXTRACT(A2, "^[\w\.]+")

B. =REGEXEXTRACT(A2, "@.+")

C. =REGEXMATCH(A2, "^[\w\.]+@")

D. =REGEXEXTRACT(A2, "[a-z]+")

Solution

1. Step 1: Understand the username pattern

   Usernames include letters, digits, dots (.), and underscores (_). The pattern "[\w\.]" matches letters, digits, underscores (\w) and dots (\.).

2. Step 2: Use REGEXEXTRACT with pattern "^[\w\.]+"

   The ^ anchors to start of text, and + matches one or more allowed characters before @. This extracts the username correctly.

3. Final Answer:

   =REGEXEXTRACT(A2, "^[\w\.]+") -> Option A

4. Quick Check:

   Extract username before @ with ^ and character class [OK]

Hint: Use ^ to anchor start and [\w\.] to match username chars [OK]

Common Mistakes:

• Extracting text after @ instead of before
• Using REGEXMATCH which returns TRUE/FALSE, not text
• Not escaping dot or missing underscore in pattern