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merge 3.0

This commit is contained in:
Xiaoyu Wang 2022-06-26 15:23:29 +08:00
parent d4175cd8f8
commit ab95a49fa2
2 changed files with 13 additions and 11 deletions
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20
source/libs/planner/src/planOptimizer.c
View File

@ -1236,17 +1236,10 @@ static int32_t rewriteTailOptCreateSort(SIndefRowsFuncLogicNode* pIndef, SLogicN
// tail(expr, [limit, offset,] _rowts)
SFunctionNode* pTail = (SFunctionNode*)nodesListGetNode(pIndef->pFuncs, 0);
int32_t limitIndex = LIST_LENGTH(pTail->pParameterList) > 2 ? 1 : -1;
int32_t offsetIndex = LIST_LENGTH(pTail->pParameterList) > 3 ? 2 : -1;
int32_t rowtsIndex = LIST_LENGTH(pTail->pParameterList) - 1;
int32_t code = nodesListMakeStrictAppend(
&pSort->pSortKeys, rewriteTailOptCreateOrderByExpr(nodesListGetNode(pTail->pParameterList, rowtsIndex)));
if (TSDB_CODE_SUCCESS == code) {
code = rewriteTailOptCreateLimit(limitIndex < 0 ? NULL : nodesListGetNode(pTail->pParameterList, limitIndex),
offsetIndex < 0 ? NULL : nodesListGetNode(pTail->pParameterList, offsetIndex),
&pSort->node.pLimit);
}
if (TSDB_CODE_SUCCESS == code) {
pSort->node.pTargets = nodesCloneList(((SLogicNode*)nodesListGetNode(pSort->node.pChildren, 0))->pTargets);
if (NULL == pSort->node.pTargets) {
@ -1281,8 +1274,17 @@ static int32_t rewriteTailOptCreateProject(SIndefRowsFuncLogicNode* pIndef, SLog
TSWAP(pProject->node.pTargets, pIndef->node.pTargets);
pProject->node.precision = pIndef->node.precision;
int32_t code = nodesListMakeStrictAppend(
&pProject->pProjections, rewriteTailOptCreateProjectExpr((SFunctionNode*)nodesListGetNode(pIndef->pFuncs, 0)));
// tail(expr, [limit, offset,] _rowts)
SFunctionNode* pTail = (SFunctionNode*)nodesListGetNode(pIndef->pFuncs, 0);
int32_t limitIndex = LIST_LENGTH(pTail->pParameterList) > 2 ? 1 : -1;
int32_t offsetIndex = LIST_LENGTH(pTail->pParameterList) > 3 ? 2 : -1;
int32_t code = nodesListMakeStrictAppend(&pProject->pProjections, rewriteTailOptCreateProjectExpr(pTail));
if (TSDB_CODE_SUCCESS == code) {
code = rewriteTailOptCreateLimit(limitIndex < 0 ? NULL : nodesListGetNode(pTail->pParameterList, limitIndex),
offsetIndex < 0 ? NULL : nodesListGetNode(pTail->pParameterList, offsetIndex),
&pProject->node.pLimit);
}
if (TSDB_CODE_SUCCESS == code) {
*pOutput = (SLogicNode*)pProject;
} else {

4
tests/system-test/2-query/tail.py
View File

@ -188,8 +188,8 @@ class TDTestCase:
def check_tail_table(self , tbname , col_name , tail_rows , offset):
tail_sql = f"select tail({col_name} , {tail_rows} , {offset}) from {tbname}"
equal_sql = f"select {col_name} from (select ts , {col_name} from {tbname} order by ts desc limit {tail_rows} offset {offset}) order by ts"
#equal_sql = f"select {col_name} from {tbname} order by ts desc limit {tail_rows} offset {offset}"
#equal_sql = f"select {col_name} from (select ts , {col_name} from {tbname} order by ts desc limit {tail_rows} offset {offset}) order by ts"
equal_sql = f"select {col_name} from {tbname} order by ts desc limit {tail_rows} offset {offset}"
tdSql.query(tail_sql)
tail_result = tdSql.queryResult