Fix another 0 count error in dropValue

utils/regr/corr.cpp

@@ -218,7 +218,16 @@ mcsv1_UDAF::ReturnCode corr::dropValue(mcsv1Context* context, ColumnDatum* valsD
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
-
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->varx = 0;
+    data->vary = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
     long double dy = valy - avgyPrev;
 
@@ -235,6 +244,6 @@ mcsv1_UDAF::ReturnCode corr::dropValue(mcsv1Context* context, ColumnDatum* valsD
     data->varx = varxPrev;
     data->vary = varyPrev;
     data->cxy = cxyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/covar_pop.cpp

@@ -169,6 +169,14 @@ mcsv1_UDAF::ReturnCode covar_pop::dropValue(mcsv1Context* context, ColumnDatum*
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
 
     avgyPrev -= (valy - avgyPrev) / cnt;
@@ -178,6 +186,6 @@ mcsv1_UDAF::ReturnCode covar_pop::dropValue(mcsv1Context* context, ColumnDatum*
     data->avgx = avgxPrev;
     data->avgy = avgyPrev;
     data->cxy = cxyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/covar_samp.cpp

@@ -173,6 +173,14 @@ mcsv1_UDAF::ReturnCode covar_samp::dropValue(mcsv1Context* context, ColumnDatum*
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
 
     avgyPrev -= (valy - avgyPrev) / cnt;
@@ -182,5 +190,6 @@ mcsv1_UDAF::ReturnCode covar_samp::dropValue(mcsv1Context* context, ColumnDatum*
     data->avgx = avgxPrev;
     data->avgy = avgyPrev;
     data->cxy = cxyPrev;
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/regr_intercept.cpp

@@ -196,7 +196,15 @@ mcsv1_UDAF::ReturnCode regr_intercept::dropValue(mcsv1Context* context, ColumnDa
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
-
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->cx = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
     long double dy = valy - avgyPrev;
 
@@ -211,6 +219,6 @@ mcsv1_UDAF::ReturnCode regr_intercept::dropValue(mcsv1Context* context, ColumnDa
     data->avgy = avgyPrev;
     data->cx = cxPrev;
     data->cxy = cxyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/regr_r2.cpp

@@ -218,7 +218,16 @@ mcsv1_UDAF::ReturnCode regr_r2::dropValue(mcsv1Context* context, ColumnDatum* va
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
-
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->varx = 0;
+    data->vary = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
     long double dy = valy - avgyPrev;
 
@@ -235,6 +244,6 @@ mcsv1_UDAF::ReturnCode regr_r2::dropValue(mcsv1Context* context, ColumnDatum* va
     data->varx = varxPrev;
     data->vary = varyPrev;
     data->cxy = cxyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/regr_slope.cpp

@@ -193,7 +193,15 @@ mcsv1_UDAF::ReturnCode regr_slope::dropValue(mcsv1Context* context, ColumnDatum*
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
-
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->cx = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
     long double dy = valy - avgyPrev;
 
@@ -208,6 +216,6 @@ mcsv1_UDAF::ReturnCode regr_slope::dropValue(mcsv1Context* context, ColumnDatum*
     data->avgy = avgyPrev;
     data->cx = cxPrev;
     data->cxy = cxyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/regr_sxx.cpp

@@ -157,11 +157,18 @@ mcsv1_UDAF::ReturnCode regr_sxx::dropValue(mcsv1Context* context, ColumnDatum* v
   long double cxPrev = data->cx;
   --data->cnt;
   uint64_t cnt = data->cnt;
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->cx = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
     avgxPrev -= dx / cnt;
     cxPrev -= dx * (valx - avgxPrev);
     data->avgx = avgxPrev;
     data->cx = cxPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/regr_sxy.cpp

@@ -168,6 +168,14 @@ mcsv1_UDAF::ReturnCode regr_sxy::dropValue(mcsv1Context* context, ColumnDatum* v
   long double cxyPrev = data->cxy;
   --data->cnt;
   uint64_t cnt = data->cnt;
+  if (cnt == 0)
+  {
+    data->avgx = 0;
+    data->avgy = 0;
+    data->cxy = 0;
+  }
+  else
+  {
     long double dx = valx - avgxPrev;
 
     avgyPrev -= (valy - avgyPrev) / cnt;
@@ -177,6 +185,6 @@ mcsv1_UDAF::ReturnCode regr_sxy::dropValue(mcsv1Context* context, ColumnDatum* v
     data->avgx = avgxPrev;
     data->avgy = avgyPrev;
     data->cxy = cxyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }

utils/regr/regr_syy.cpp

@@ -158,11 +158,18 @@ mcsv1_UDAF::ReturnCode regr_syy::dropValue(mcsv1Context* context, ColumnDatum* v
   long double cyPrev = data->cy;
   --data->cnt;
   uint64_t cnt = data->cnt;
+  if (cnt == 0)
+  {
+    data->avgy = 0;
+    data->cx = 0;
+  }
+  else
+  {
     long double dy = valy - avgyPrev;
     avgyPrev -= dy / cnt;
     cyPrev -= dy * (valy - avgyPrev);
     data->avgy = avgyPrev;
     data->cy = cyPrev;
-
+  }
   return mcsv1_UDAF::SUCCESS;
 }