Question

I’m a beginner in regexp and i try to search in json formatted text, but i cannot make it work right:

SELECT DISTINCT tag, body FROM pages 
WHERE (body REGEXP BINARY '"listeListeOuiNon":".*1.*"')

It shows me as results text with

"listeListeOuiNon":"1" and

"listeListeOuiNon":"1,2" and

"listeListeOuiNon":"0,1" as expected,

but also "listeListeOuiNon":"2" (not expected)

Any idea?
Maybe it’s because it’s greedy, but i’m not sure…

Thanks in advance!

Answer 1

I would try to replace the two .* with [^"]*… That’ll however only be sufficient if your listeListeOuiNon cannot contain litteral "s, or you’d have to also handle the escape sequence. Basically with the . you’ll match any JSON string that has a 1 “after” "listListOuiNon":", even if it’s in another field, and yes, that’s because it’s greedy.