xxq250
/
homework-jianmu
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

[TD-2610]<fix>: null data return nothing in case of stddev query.

This commit is contained in:
Haojun Liao 2021-01-07 11:39:13 +08:00
parent bdf9e0f1db
commit c2a536910e
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/query/src/qAggMain.c
View File

@ -1268,12 +1268,14 @@ static void min_function_f(SQLFunctionCtx *pCtx, int32_t index) {
}
static void stddev_function(SQLFunctionCtx *pCtx) {
// the second stage to calculate standard deviation
SStddevInfo *pStd = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
if (pStd->stage == 0) { // the first stage is to calculate average value
if (pStd->stage == 0) {
// the first stage is to calculate average value
avg_function(pCtx);
} else {
} else if (pStd->num > 0) {
// the second stage to calculate standard deviation
// if pStd->num == 0, there are no numbers in the first round check. No need to do the second round
double *retVal = &pStd->res;
double avg = pStd->avg;