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feat: the query uses the 'cachelast' option to decide whether to optimize the last_row function

This commit is contained in:
Xiaoyu Wang 2022-07-15 08:43:40 +08:00
parent ef4f6964d1
commit 31e29dfc38
7 changed files with 33 additions and 10 deletions
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1
include/libs/nodes/plannodes.h
View File

@ -77,6 +77,7 @@ typedef struct SScanLogicNode {
SArray* pSmaIndexes;
SNodeList* pGroupTags;
bool groupSort;
int8_t cacheLastMode;
} SScanLogicNode;
typedef struct SJoinLogicNode {

1
include/libs/nodes/querynodes.h
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@ -152,6 +152,7 @@ typedef struct SRealTableNode {
char qualDbName[TSDB_DB_NAME_LEN]; // SHOW qualDbName.TABLES
double ratio;
SArray* pSmaIndexes;
int8_t cacheLastMode;
} SRealTableNode;
typedef struct STempTableNode {

3
source/libs/parser/src/parAstParser.c
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@ -140,6 +140,9 @@ static int32_t collectMetaKeyFromRealTableImpl(SCollectMetaKeyCxt* pCxt, SRealTa
if (TSDB_CODE_SUCCESS == code && (0 == strcmp(pRealTable->table.tableName, TSDB_INS_TABLE_DNODE_VARIABLES))) {
code = reserveDnodeRequiredInCache(pCxt->pMetaCache);
}
if (TSDB_CODE_SUCCESS == code) {
code = reserveDbCfgInCache(pCxt->pParseCxt->acctId, pRealTable->table.dbName, pCxt->pMetaCache);
}
return code;
}

32
source/libs/parser/src/parTranslater.c
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@ -1772,6 +1772,15 @@ static int32_t setTableIndex(STranslateContext* pCxt, SName* pName, SRealTableNo
return TSDB_CODE_SUCCESS;
}
static int32_t setTableCacheLastMode(STranslateContext* pCxt, SName* pName, SRealTableNode* pRealTable) {
SDbCfgInfo dbCfg = {0};
int32_t code = getDBCfg(pCxt, pRealTable->table.dbName, &dbCfg);
if (TSDB_CODE_SUCCESS == code) {
pRealTable->cacheLastMode = dbCfg.cacheLast;
}
return code;
}
static int32_t translateTable(STranslateContext* pCxt, SNode* pTable) {
int32_t code = TSDB_CODE_SUCCESS;
switch (nodeType(pTable)) {
@ -1791,6 +1800,9 @@ static int32_t translateTable(STranslateContext* pCxt, SNode* pTable) {
if (TSDB_CODE_SUCCESS == code) {
code = setTableIndex(pCxt, &name, pRealTable);
}
if (TSDB_CODE_SUCCESS == code) {
code = setTableCacheLastMode(pCxt, &name, pRealTable);
}
}
pRealTable->table.precision = pRealTable->pMeta->tableInfo.precision;
pRealTable->table.singleTable = isSingleTable(pRealTable);
@ -5413,11 +5425,12 @@ static int32_t rewriteCreateTable(STranslateContext* pCxt, SQuery* pQuery) {
}
static void addCreateTbReqIntoVgroup(int32_t acctId, SHashObj* pVgroupHashmap, SCreateSubTableClause* pStmt,
const STag* pTag, uint64_t suid, const char* sTableNmae, SVgroupInfo* pVgInfo, SArray* tagName) {
// char dbFName[TSDB_DB_FNAME_LEN] = {0};
// SName name = {.type = TSDB_DB_NAME_T, .acctId = acctId};
// strcpy(name.dbname, pStmt->dbName);
// tNameGetFullDbName(&name, dbFName);
const STag* pTag, uint64_t suid, const char* sTableNmae, SVgroupInfo* pVgInfo,
SArray* tagName) {
// char dbFName[TSDB_DB_FNAME_LEN] = {0};
// SName name = {.type = TSDB_DB_NAME_T, .acctId = acctId};
// strcpy(name.dbname, pStmt->dbName);
// tNameGetFullDbName(&name, dbFName);
struct SVCreateTbReq req = {0};
req.type = TD_CHILD_TABLE;
@ -5524,7 +5537,7 @@ static int32_t buildNormalTagVal(STranslateContext* pCxt, SSchema* pTagSchema, S
if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL) {
void* nodeVal = nodesGetValueFromNode(pVal);
STagVal val = {.cid = pTagSchema->colId, .type = pTagSchema->type};
// strcpy(val.colName, pTagSchema->name);
// strcpy(val.colName, pTagSchema->name);
if (IS_VAR_DATA_TYPE(pTagSchema->type)) {
val.pData = varDataVal(nodeVal);
val.nData = varDataLen(nodeVal);
@ -5621,7 +5634,7 @@ static int32_t buildKVRowForAllTags(STranslateContext* pCxt, SCreateSubTableClau
} else if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL && !pVal->isNull) {
char* tmpVal = nodesGetValueFromNode(pVal);
STagVal val = {.cid = pTagSchema->colId, .type = pTagSchema->type};
// strcpy(val.colName, pTagSchema->name);
// strcpy(val.colName, pTagSchema->name);
if (IS_VAR_DATA_TYPE(pTagSchema->type)) {
val.pData = varDataVal(tmpVal);
val.nData = varDataLen(tmpVal);
@ -5664,7 +5677,7 @@ static int32_t rewriteCreateSubTable(STranslateContext* pCxt, SCreateSubTableCla
code = getTableMeta(pCxt, pStmt->useDbName, pStmt->useTableName, &pSuperTableMeta);
}
STag* pTag = NULL;
STag* pTag = NULL;
SArray* tagName = taosArrayInit(8, TSDB_COL_NAME_LEN);
if (TSDB_CODE_SUCCESS == code) {
@ -5680,7 +5693,8 @@ static int32_t rewriteCreateSubTable(STranslateContext* pCxt, SCreateSubTableCla
code = getTableHashVgroup(pCxt, pStmt->dbName, pStmt->tableName, &info);
}
if (TSDB_CODE_SUCCESS == code) {
addCreateTbReqIntoVgroup(pCxt->pParseCxt->acctId, pVgroupHashmap, pStmt, pTag, pSuperTableMeta->uid, pStmt->useTableName, &info, tagName);
addCreateTbReqIntoVgroup(pCxt->pParseCxt->acctId, pVgroupHashmap, pStmt, pTag, pSuperTableMeta->uid,
pStmt->useTableName, &info, tagName);
}
taosArrayDestroy(tagName);

1
source/libs/planner/src/planLogicCreater.c
View File

@ -244,6 +244,7 @@ static int32_t makeScanLogicNode(SLogicPlanContext* pCxt, SRealTableNode* pRealT
pScan->showRewrite = pCxt->pPlanCxt->showRewrite;
pScan->ratio = pRealTable->ratio;
pScan->dataRequired = FUNC_DATA_REQUIRED_DATA_LOAD;
pScan->cacheLastMode = pRealTable->cacheLastMode;
*pLogicNode = (SLogicNode*)pScan;

3
source/libs/planner/src/planOptimizer.c
View File

@ -1985,7 +1985,8 @@ static bool lastRowScanOptMayBeOptimized(SLogicNode* pNode) {
if (QUERY_NODE_LOGIC_PLAN_AGG != nodeType(pNode) || !(((SAggLogicNode*)pNode)->hasLastRow) ||
NULL != ((SAggLogicNode*)pNode)->pGroupKeys || 1 != LIST_LENGTH(pNode->pChildren) ||
QUERY_NODE_LOGIC_PLAN_SCAN != nodeType(nodesListGetNode(pNode->pChildren, 0)) ||
NULL != ((SScanLogicNode*)nodesListGetNode(pNode->pChildren, 0))->node.pConditions) {
NULL != ((SScanLogicNode*)nodesListGetNode(pNode->pChildren, 0))->node.pConditions ||
0 == ((SScanLogicNode*)nodesListGetNode(pNode->pChildren, 0))->cacheLastMode) {
return false;
}

2
source/libs/planner/src/planPhysiCreater.c
View File

@ -515,6 +515,8 @@ static int32_t createLastRowScanPhysiNode(SPhysiPlanContext* pCxt, SSubplan* pSu
}
pScan->groupSort = pScanLogicNode->groupSort;
vgroupInfoToNodeAddr(pScanLogicNode->pVgroupList->vgroups, &pSubplan->execNode);
return createScanPhysiNodeFinalize(pCxt, pSubplan, pScanLogicNode, (SScanPhysiNode*)pScan, pPhyNode);
}