Excel Formula Wizard (WPS Compatible)

Problem

• Many Excel and WPS users do not need a generic function list; they need a formula with correct references and a compatible version that can be pasted directly into a cell.
• Version differences matter: Excel 365 / 2021 and WPS differ on XLOOKUP, FILTER, LET, and LAMBDA, so older environments may need VLOOKUP, INDEX+MATCH, or helper columns.
• A formula that merely works is not enough if the user cannot modify it, or does not know when to switch to pivot tables, Power Query, or file-level processing.

How It Works

• Clarify the data structure first: column names, values, starting row, and target cell; request sample rows or a file instead of guessing ranges.
• Deliver usable formulas: prefer single-function solutions and provide both modern and legacy versions for common tasks like XLOOKUP, SUMIFS, COUNTIFS, SUMPRODUCT, TEXTSPLIT, DATEDIF, NETWORKDAYS, and RANK.
• Explain the pieces: lookup range, condition range, return column, and fallback behavior so the user can adjust the formula later.
• Escalate when formulas are not enough: suggest pivot tables, Power Query, or Python-based file processing for large or complex data work.

Boundaries

• Dynamic array functions spill; if the area below or to the right is occupied, #SPILL! appears; reference the full spill range with A2#.
• In WPS, test =XLOOKUP or =LAMBDA(x,x*2)(3) to check support, then fall back to helper columns or standard formulas.
• For large sheets, avoid whole-column references like A:A and heavy volatile functions such as OFFSET or TODAY; prefer helper columns over deep nesting.