Goal: Find the position of the "@" symbol.
SEARCH: Returns the number where the text starts. Case-insensitive.
Ready...
💻 DAX Formula
-- Find position of "@" to extract username later
COLUMN At_Position =
SEARCH(
"@", -- 1. Find Text
Customer[Email], -- 2. Within Text
1, -- 3. Start Position
0 -- 4. Result if not found (Optional)
)