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| author | Neil Conway <neilc@samurai.com> | 2007-09-19 22:31:51 +0000 |
|---|---|---|
| committer | Neil Conway <neilc@samurai.com> | 2007-09-19 22:31:51 +0000 |
| commit | d5e6f4f82802ddb18ec02780d21d0e50d2b30eba (patch) | |
| tree | 8c2a95049cb1ac2c7eb40dbe6f25ec6679d9e518 /src/tutorial/funcs.c | |
| parent | eb4f4f5b7cb0b95fed42fe44d8b91c21529e25d5 (diff) | |
| download | postgresql-d5e6f4f82802ddb18ec02780d21d0e50d2b30eba.tar.gz postgresql-d5e6f4f82802ddb18ec02780d21d0e50d2b30eba.zip | |
Prevent corr() from returning the wrong results for negative correlation
values. The previous coding essentially assumed that x = sqrt(x*x), which
does not hold for x < 0.
Thanks to Jie Zhang at Greenplum and Gavin Sherry for reporting this
issue.
Diffstat (limited to 'src/tutorial/funcs.c')
0 files changed, 0 insertions, 0 deletions