On 8/11/19 4:10 PM, Alexander Korotkov wrote: > Adjust string comparison in jsonpath > > We have implemented jsonpath string comparison using default database locale. > However, standard requires us to compare Unicode codepoints. This commit > implements that, but for performance reasons we still use per-byte comparison > for "==" operator. Thus, for consistency other comparison operators do > per-byte > comparison if Unicode codepoints appear to be equal. > > In some edge cases, when same Unicode codepoints have different binary > representations in database encoding, we diverge standard to achieve better > performance of "==" operator. In future to implement strict standard > conformance, we can do normalization of input JSON strings. >
This appears to have upset prion when testing on en_US.iso885915. cheers andrew -- Andrew Dunstan https://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
