There is StackOverflow question
<http://stackoverflow.com/questions/23371028/case-insensitive-regex-for-non-ascii-strings-does-not-work>
for regex case insensitivity support for non-ASCII strings. That question
does not have any answer for 7 months.
Now I can reproduce that scenario with latest community version of Neo4j
2.1.6, and there is still no support for case insensitivity for non-ASCII
strings (at least with Ukrainian and Russian language).
Assume we have two nodes:
CREATE (n:{Name:"Ivan"})
CREATE (n:{Name:"Иван"})
Given that try to execute queries:
MATCH (n) WHERE n.Name =~ '(?i)Ivan.*'
-- returns 1 row
MATCH (n) WHERE n.Name =~ '(?i)ivan.*'
-- returns 1 row
MATCH (n) WHERE n.Name =~ '(?i)Иван.*'
-- returns 1 row
MATCH (n) WHERE n.Name =~ '(?i)иван.*'
-- returns *0 rows* *(!)*
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