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I would like to search for all admin levels with the values between 7 to 11 using the following query (http://overpass-turbo.eu/s/Dn5):
(relation[admin_level~"^[7-11]$"]["wikidata"]({{bbox}});
The error says:
static error: Invalid regular expression: "^[7-11]$"
Surprisingly a search query with ^[3-6]$ works perfectly fine. So it seems to be related to the 2 digit number.
Does anybody know how to improve this query?
Using regular expressions for numeric comparisons is no longer needed since release 0.7.55 and discouraged these days. Instead you can use numeric comparisons like described in the following blog post: http://dev.overpass-api.de/blog/numbers.html
For your example, the respective query should look as follows:
[out:json][timeout:60];
relation[admin_level]
(if:is_number(t["admin_level"]) &&
t["admin_level"] >= 7 &&
t["admin_level"] <= 11)
["wikidata"]({{bbox}});
out body;
>;
out skel qt;
The [a-b] notation matches a single character in a range, for example [a-z] matching lower case letters.
What you can do for a small range of integers is to spell them out as alternatives. This might work:
//not working (admin level from 7 to 11)
[out:json][timeout:60];
(relation[admin_level~"^(7|8|9|10|11)$"]["wikidata"]({{bbox}});
);
out body;
>;
out skel qt;
but is obviously tedious if you have 100 levels.
There's some info on regexping numeric ranges here: https://www.regular-expressions.info/numericranges.html
(relation[admin_level~"[7891011]"]["wikidata"]({{bbox}});