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MCOL-1983 Have regr_intercept, regr_slope and regr_r2 return NULL for 1 or 0 rows in set

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This commit is contained in:
David Hall
2018-11-29 13:31:12 -06:00
parent 453850ee1a
commit 0cef3bf31c
4 changed files with 4 additions and 4 deletions
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2
utils/regr/regr_slope.cpp
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@ -139,7 +139,7 @@ mcsv1_UDAF::ReturnCode regr_slope::evaluate(mcsv1Context* context, static_any::a
{
struct regr_slope_data* data = (struct regr_slope_data*)context->getUserData()->data;
double N = data->cnt;
if (N > 0)
if (N > 1)
{
// COVAR_POP(y, x) / VAR_POP(x)
double sumx = data->sumx;