ZhangYu0123 commented on PR #18925:
URL: https://github.com/apache/doris/pull/18925#issuecomment-1518557137
> Could also speed up other string related method like strlen ?
strlen function has three implements length、bit_length、char_length.
The difference is that char_length computes char length by finding
utf8-length-table. eg: '中国' the length is 2 not 6. This pr use simd to optimize
the process of finding utf8-length-table.
Related methods like InStr, locate_pos is also optimized and
bit_length、char_length are not optimized.
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