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add stddev function translate partial/merge

This commit is contained in:
Ganlin Zhao 2022-06-14 16:42:05 +08:00
parent b13c31c953
commit cd94eabc73
4 changed files with 58 additions and 0 deletions
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2
include/libs/function/functionMgt.h
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@ -144,6 +144,8 @@ typedef enum EFunctionType {
FUNCTION_TYPE_LAST_MERGE,
FUNCTION_TYPE_AVG_PARTIAL,
FUNCTION_TYPE_AVG_MERGE,
FUNCTION_TYPE_STDDEV_PARTIAL,
FUNCTION_TYPE_STDDEV_MERGE,
// user defined funcion
FUNCTION_TYPE_UDF = 10000

1
source/libs/function/inc/builtinsimpl.h
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@ -68,6 +68,7 @@ int32_t stddevFunction(SqlFunctionCtx* pCtx);
int32_t stddevFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock);
int32_t stddevInvertFunction(SqlFunctionCtx* pCtx);
int32_t stddevCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx);
int32_t getStddevInfoSize();
bool getLeastSQRFuncEnv(struct SFunctionNode* pFunc, SFuncExecEnv* pEnv);
bool leastSQRFunctionSetup(SqlFunctionCtx *pCtx, SResultRowEntryInfo* pResultInfo);

53
source/libs/function/src/builtins.c
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@ -184,6 +184,35 @@ static int32_t translateAvgMerge(SFunctionNode* pFunc, char* pErrBuf, int32_t le
return TSDB_CODE_SUCCESS;
}
static int32_t translateStddevPartial(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
if (1 != LIST_LENGTH(pFunc->pParameterList)) {
return invaildFuncParaNumErrMsg(pErrBuf, len, pFunc->functionName);
}
uint8_t paraType = ((SExprNode*)nodesListGetNode(pFunc->pParameterList, 0))->resType.type;
if (!IS_NUMERIC_TYPE(paraType) && !IS_NULL_TYPE(paraType)) {
return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
}
pFunc->node.resType = (SDataType){.bytes = getStddevInfoSize() + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY};
return TSDB_CODE_SUCCESS;
}
static int32_t translateStddevMerge(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
if (1 != LIST_LENGTH(pFunc->pParameterList)) {
return invaildFuncParaNumErrMsg(pErrBuf, len, pFunc->functionName);
}
uint8_t paraType = ((SExprNode*)nodesListGetNode(pFunc->pParameterList, 0))->resType.type;
if (TSDB_DATA_TYPE_BINARY != paraType) {
return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
}
pFunc->node.resType = (SDataType){.bytes = tDataTypes[TSDB_DATA_TYPE_DOUBLE].bytes, .type = TSDB_DATA_TYPE_DOUBLE};
return TSDB_CODE_SUCCESS;
}
static int32_t translateWduration(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
// pseudo column do not need to check parameters
pFunc->node.resType = (SDataType){.bytes = sizeof(int64_t), .type = TSDB_DATA_TYPE_BIGINT};
@ -1523,6 +1552,30 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
.invertFunc = stddevInvertFunction,
.combineFunc = stddevCombine,
},
{
.name = "_stddev_partial",
.type = FUNCTION_TYPE_STDDEV_PARTIAL,
.classification = FUNC_MGT_AGG_FUNC,
.translateFunc = translateStddevPartial,
.getEnvFunc = getStddevFuncEnv,
.initFunc = stddevFunctionSetup,
.processFunc = stddevFunction,
.finalizeFunc = stddevFinalize,
.invertFunc = stddevInvertFunction,
.combineFunc = stddevCombine,
},
{
.name = "_stddev_merge",
.type = FUNCTION_TYPE_STDDEV_MERGE,
.classification = FUNC_MGT_AGG_FUNC,
.translateFunc = translateStddevMerge,
.getEnvFunc = getStddevFuncEnv,
.initFunc = stddevFunctionSetup,
.processFunc = stddevFunction,
.finalizeFunc = stddevFinalize,
.invertFunc = stddevInvertFunction,
.combineFunc = stddevCombine,
},
{
.name = "leastsquares",
.type = FUNCTION_TYPE_LEASTSQUARES,

2
source/libs/function/src/builtinsimpl.c
View File

@ -1488,6 +1488,8 @@ int32_t maxCombine(SqlFunctionCtx* pDestCtx, SqlFunctionCtx* pSourceCtx) {
return minMaxCombine(pDestCtx, pSourceCtx, 0);
}
int32_t getStddevInfoSize() { return (int32_t)sizeof(SStddevRes); }
bool getStddevFuncEnv(SFunctionNode* pFunc, SFuncExecEnv* pEnv) {
pEnv->calcMemSize = sizeof(SStddevRes);
return true;