Question

May I use a RegEx (insted of Substring) in order to get a string in a string?

I’d like to get just the table names from a series of INSERT statements

INSERT INTO tableA VALUES (col1, col2, col3);
INSERT INTO tableB VALUES (col1, col2, col3);
INSERT INTO tableC VALUES (col1, col2, col3);

Using a regEx I would like to get (single line as I’m reading from a file):

tableA
tableB
tableC

I’ve tried with this expression (INTO )([a-z_])* which gives me ‘INTO tableA’ which I can use a SubString or Replace to give me the rest, but I’m guessing this may be done in RegEx.

Answer 1

Use this regex with lookbehind:

(?i)(?<=into\s+)\S+

---

var tables = Regex.Matches(s, @"(?i)(?<=into\s+)\S+")
    .Cast<Match>().Select(m => m.Value);