Regex case insensitive in column expression

[adjrock]

Hi,
I’m trying regexMatcher on the following and need it to be case insensitive so I tried this
“.opticw./i” but it fails to capture on this list:

Number Redirection - Insdsl (ae)
Blabla OpticWave
Blabla opticwave
Blabla opTicwave
Opticw blabla

[armingrudd]

Hi,

This matches any string containing “opticw” and is case insensitive:
(?i).*opticw.*

Best,
Armin

[adjrock]

Thanks armingrudd,
How can find documentation on how Regex is implemented in Knime? This version only seems to work in Knime

[armingrudd]

This is not only for KNIME.
Here is the documentation to turn modes on or off in regex:
https://www.regular-expressions.info/modifiers.html
This website is great to learn regex.

Armin