AI Spreadsheet Counts: When an Asterisk Is Part of the Label

You ask an AI assistant to count a product labelled Pack*. It returns a plausible spreadsheet formula, the sheet shows three, and the report moves on. Yet the source contains only one cell with that exact label. The asterisk has changed jobs: it is being read as an instruction rather than as part of the name.

This is a small but useful example of why a formula needs a matching rule. Before accepting an AI-generated count, decide whether you want the complete label, a family of labels or text containing a particular character. The same punctuation can produce different answers under those different requests.

COUNTIF criteria can describe a pattern

Microsoft’s COUNTIF documentation explains that the function counts cells meeting a criterion. In text criteria, an asterisk matches a sequence of characters and a question mark matches one character. Prefix an actual asterisk or question mark with a tilde when you want to match the character itself.

The quotation marks around a criterion identify a text string; they do not switch off its wildcard behaviour. That distinction matters when a product name happens to contain punctuation that the function interprets specially.

Work through a four-row product list

Imagine a fictional creator reviewing a small catalogue. Cell A1 contains the heading Product label. Cells A2 to A5 contain the following text, with no extra spaces:

• A2: Pack*
• A3: Pack A
• A4: Pack B
• A5: Other

The owner wants the number of cells whose complete label is Pack followed by a literal asterisk. By inspection, the intended count is one: A2. The two named variants are separate labels and should not be included.

The formula =COUNTIF(A2:A5,"Pack*") instead uses a pattern. It matches A2, A3 and A4, giving three under the documented rule. The pattern begins with Pack and then permits the remaining sequence of characters. It is a reasonable answer to a different request.

For the stated literal-label task, use =COUNTIF(A2:A5,"Pack~*"). The tilde changes the asterisk’s role in the criterion, so the expected count is one. It does not instruct the owner to rename A2 or insert a tilde into the product data.

These expected results follow from the published matching rules and inspection of the invented list. They are not results from an Excel or Google Sheets application run performed for this article. The formulas use comma-separated arguments as written; check the formula syntax accepted by your own setup before using them.

Give a successful result a neighbouring case to reject

If the sample contained only Pack*, both formulas could return one. That would leave the unwanted wildcard interpretation hidden. The nearby labels Pack A and Pack B make the distinction visible because the broad pattern accepts them and the literal criterion should reject them.

For an owner reviewing AI work, that suggests a practical acceptance check: include the wanted label, a similar unwanted label and an unrelated label. Write the expected decision beside each before asking for the formula. The review then asks which cells were counted, rather than whether the total looks believable.

Do this on a copy or a small example range. There is no need to alter a live catalogue to investigate how a criterion works. Keep the original labels available so the formula can be checked against the actual question.

Question marks and tildes need deliberate treatment too

Google Sheets’ COUNTIF guidance documents the same distinction for its spreadsheet function. It specifies ~? for a literal question mark, ~* for a literal asterisk and ~~ for a literal tilde. It also notes that COUNTIF is not case-sensitive.

Consequently, literal punctuation matching should not be described as a guarantee that every possible text distinction is preserved. If the business treats upper-case and lower-case identifiers differently, that is another requirement to state and verify. Solving the asterisk problem does not settle the whole identity rule.

Avoid copying escape conventions from another language without checking the target function. The relevant evidence here is the documentation for spreadsheet COUNTIF. A familiar-looking symbol in a filename search or programming expression may be governed by a different set of rules.

Ask the assistant to explain the criterion before applying it

For the fictional catalogue, a useful brief would identify the application, range and intended whole-label match. State that the asterisk belongs to the product name. Ask the assistant to list the matching cells and explain what each special character in its criterion does.

• What should count: only the complete label Pack*.
• What should not count: Pack A, Pack B or Other.
• What must stay unchanged: the four source labels.
• What to return: the proposed formula, the expected count and the matching cell references.

This is a proposed review routine, not a measured improvement from a particular AI product. Check the explanation against the function documentation and then try the example in the application you actually use. A correctly explained pattern can still be the wrong pattern for the business question.

If the owner really wants all Pack variants, the broader criterion may be appropriate. Name that output as a family-of-labels count. Do not present it under the heading for one individual product merely because the formula calculates without an error.

Keep data preparation separate from matching

MaryChuks.com’s guide to choosing what text normalisation preserves considers a different stage: deciding how imported text should be represented. Here, even unchanged source text can be interpreted more broadly by the counting criterion. Both choices deserve an explicit rule.

For handover, keep a short note identifying the range, whether wildcards are intentional and which example cells should be included. If someone later changes the report to cover a wider product family, they can change the criterion knowingly rather than accidentally undoing the original requirement.

The useful final check is concrete: can you point to every cell behind the count and explain why it belongs? When an asterisk is part of the label, preserve that meaning in the criterion. A small punctuation choice should not quietly rewrite the question your report answers.

Sources

Official documentation checked on 30 October 2026. These are maintained support pages; the date records access rather than an assumed original publication date. The catalogue is fictional, and no spreadsheet application was run for this article.

• Microsoft Support: Use the COUNTIF function in Microsoft Excel.
• Google Docs Editors Help: COUNTIF — spreadsheet syntax, wildcard criteria and case sensitivity.