Regex java operators

Question

This is my regex .+\s*(?=!|<|>|=|LIKE) and it doesnt work.

I want to match everything on the left side to the operators <,>,<=,>=,=,!=,LIKE.

Obviously my regex doesn't do the work so I am wondering if you could help me.

Check out what is wrong on this link: https://regex101.com/r/skRdTr/1 (it matches everything on the left side, including >,<,! if operator is <=,>=,!=)

regex has LIKE and you expect LESS in your second sentence. Am I missing something? — vlaxmi
– vlaxmi, Commented Mar 29, 2017 at 2:35

i_rezic · Accepted Answer · 2017-03-29 02:44:17Z

1

I found the answer: .+?\s*(?=!|<|>|=|LIKE).

answered Mar 29, 2017 at 2:44

i_rezic

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2 Comments

abc123 Over a year ago

.+? is the same as .* isn't it?

Gary Over a year ago

+? is "lazy match one or more" and .* is "greedy match zero or more". The OP's problem was with the two digit operators: The greedy left-side would capture the first digit, since the lookahead was happy to match the other. Also, @i_rezic the \s* portion of your regex isn't doing anything.

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