VBA / Office

Verify column names, positions, and types using Power Query M Table.Schema, and detect missing required columns using Table.HasColumns and List.Difference. Includes three dummy data examples and official specifications.

Compare through practical examples where #N/A occurs when combining tables with differing row or column counts using Excel HSTACK/VSTACK, and how to use IFNA.

Test Excel's TAKE, DROP, and CHOOSECOLS functions on the same dummy table to understand how to extract the beginning, end, and specific columns, and to observe error boundaries.

This article is a technical commentary and implementation example generated using AI. Although the codes and procedures ...

We split "red,green,blue" into three columns using Excel's TEXTSPLIT function and observe the spill results when changing the delimiter from a comma to a semicolon.

This article is a technical explanation and implementation example generated using AI. The posted code and procedures ar...

Learn how to normalize keys in a VBA Dictionary to handle leading and trailing spaces and case sensitivity, allowing for duplicate detection that aligns with your business rules.

List VBA references and use IsBroken to isolate broken references. Instead of auto-repairing, safely observe the state first.

Learn how to read regular expressions by extracting IDs from dummy logs and masking emails using Excel's REGEXEXTRACT and REGEXREPLACE.

Standardize column name variations such as employee codes and IDs using Power Query M, and fill in missing columns with null. Inputs with ambiguous multiple candidate columns are safely stopped.