How to replace left/mid/right excel functions with flexible regex pattern extraction
- Step 1Identify the variable-length pattern to extract — For order IDs in 'Ref: ORD-1234' use regex (ORD-\d+). For emails use ([a-zA-Z0-9._%+\-]+@[\w.]+).
- Step 2Configure the extraction — Enter source column, regex pattern with capture group, and output column name.
- Step 3Download the extracted file — Extracted values appear in the new column. No formulas in the output.
Frequently asked questions
When is MID/FIND still the right approach?+
When the position is truly fixed and known in advance (e.g. always characters 5-8), MID is simple and efficient. Use regex for patterns that vary in position or length.
Can regex handle optional parts of a pattern?+
Yes. Use ? for optional characters: (ORD-?\d{4}) matches both 'ORD-1234' and 'ORD1234'.
Does the tool apply the same regex to every row in the column?+
Yes. The same regex is applied to every cell in the source column. Each matching cell's first capture group is written to the output column.
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