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fix(query): fix mode function processing all null column 

TD-17024
This commit is contained in:
Ganlin Zhao 2022-07-19 14:54:18 +08:00
parent 58ba4f8cf7
commit ed51c8e329
1 changed files with 9 additions and 8 deletions
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17
source/libs/function/src/builtinsimpl.c
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@ -5098,12 +5098,7 @@ bool modeFunctionSetup(SqlFunctionCtx* pCtx, SResultRowEntryInfo* pResInfo) {
return true;
}
static void doModeAdd(SModeInfo* pInfo, char* data, bool isNull) {
// ignore null elements
if (isNull) {
return;
}
static void doModeAdd(SModeInfo* pInfo, char* data) {
int32_t hashKeyBytes = IS_VAR_DATA_TYPE(pInfo->colType) ? varDataTLen(data) : pInfo->colBytes;
SModeItem** pHashItem = taosHashGet(pInfo->pHash, data, hashKeyBytes);
if (pHashItem == NULL) {
@ -5128,10 +5123,16 @@ int32_t modeFunction(SqlFunctionCtx* pCtx) {
SColumnInfoData* pInputCol = pInput->pData[0];
SColumnInfoData* pOutput = (SColumnInfoData*)pCtx->pOutput;
int32_t numOfElems = 0;
int32_t startOffset = pCtx->offset;
for (int32_t i = pInput->startRowIndex; i < pInput->numOfRows + pInput->startRowIndex; ++i) {
char* data = colDataGetData(pInputCol, i);
doModeAdd(pInfo, data, colDataIsNull_s(pInputCol, i));
if (colDataIsNull_s(pInputCol, i)) {
continue;
}
numOfElems++;
doModeAdd(pInfo, data);
if (sizeof(SModeInfo) + pInfo->numOfPoints * (sizeof(SModeItem) + pInfo->colBytes) >= MODE_MAX_RESULT_SIZE) {
taosHashCleanup(pInfo->pHash);
@ -5139,7 +5140,7 @@ int32_t modeFunction(SqlFunctionCtx* pCtx) {
}
}
SET_VAL(pResInfo, 1, 1);
SET_VAL(pResInfo, numOfElems, 1);
return TSDB_CODE_SUCCESS;
}