Isolate email addresses from a column using Magic ETL or BeastMode

blittle · 2024-03-21T22:27:29+00:00

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Hello, I am trying to isolate email addresses from an Information column in a Dataset. A sample of the data from the column would be something like 'someone's name [email@email.com]'

I don't necessarily need the name part, but I do need the Email Addresses, which are always bracketed in this column by '[]'.

I am using a Split Column tile in Magic ETL, and in the Choose Delimiter to Split On section I have 'Custom' selected and using the following REGEX code that I'm sure is wrong:

REGEX_EXTRACT([Information], "\[(.*?)\]", 0)

The code compiles, but the newly created column is copying all the text from the Information column (Column that's being split) exactly.

Any ideas how I can only grab the email address that's inside the brackets? I'm sure I'm missing something.

Thank you!

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Accepted answers

marcel_luthi

REGEX can be tricky, specially when it comes to replacing, so you might want to try a couple of different options until you find one that works, here's one you can try:

REGEXP_REPLACE(`Information`,'.*([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9_-]+).*','$1')

All comments

GrantSmith

it’s not matching anything so it’s returning the original string. You can use a formula tile and REGEXP_REPLACE

REGEXP_REPLACE(`Information`, '^.*\[([^\]+).*$', '$1')

GrantSmith

alternatively you can split part the split part

SPLIT_PART(SPLIT_PART(`Information`, '[',2), ']', 1)

blittle

For some reason the Formula Tile gives me an Unknown Error Occurred when I try REGEX in the formula bar. That's where I tried it first.

GrantSmith

Sorry @blittle - Appears it didn't get adequately submitted. I've updated the formula in the comment above.

blittle

Hi Grant, Thank you for the help, I appreciate it!
I tried the amended formula you posted, and 'validate formula' seems to like it, but when you run the preview, I am getting a new error.

Any thoughts?

Thanks again!

marcel_luthi

REGEX can be tricky, specially when it comes to replacing, so you might want to try a couple of different options until you find one that works, here's one you can try:

REGEXP_REPLACE(`Information`,'.*([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9_-]+).*','$1')

blittle

Wow @marcel_luthi, that's definitely closer than I've been! That did semi work. I'm terrible with REGEX, so it's all trial and error for me.
It seems to be grabbing the email address, but only returning the last character of the person's name, the @ symbol and domain (example: S@gmail.com). So it appears to be looking at what's inside the brackets, but only grabbing a portion.

Is it only grabbing a character count of 1 to the left of the '@' symbol?

blittle

I think I got the following to work…

REGEXP_REPLACE(`Information`, '.?([a-zA-Z0-9.-]+@[a-zA-Z0-9.-]+.[a-zA-Z0-9_-]+).', '$1')

It seems to be returning the full email address after an initial test, but I need to open up my filter to look at more rows.