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Changes between Initial Version and Version 1 of Ticket #21435, comment 11

initial	v1
8	8	Yes. Japanese.
9	9	In this case, the column is not binary so index is constructed with 2 words.
10		Japanese characters are almost 50,000 words so that index tree would have maximum 50,000^2 node when using depth 2 BTree index.
	10	Japanese characters are almost 50,000 words so that index tree would have maximum 50,000!^2 node when using depth 2 BTree index.
11	11
12	12	If other users does not have this kind of performance problem, index length should be minimum.