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Merge pull request #21258 from taosdata/szhou/fix-td24084 

fix: bypass projection pruning if union set op and subquery
This commit is contained in:
dapan1121 2023-05-12 17:02:54 +08:00 committed by GitHub
parent d33d63fc56 d8a7e14065
commit 0c744e864b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 28 additions and 0 deletions
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3
source/libs/parser/src/parCalcConst.c
View File

@ -388,6 +388,9 @@ static bool isSetUselessCol(SSetOperator* pSetOp, int32_t index, SExprNode* pPro
}
static int32_t calcConstSetOpProjections(SCalcConstContext* pCxt, SSetOperator* pSetOp, bool subquery) {
if (subquery && pSetOp->opType == SET_OP_TYPE_UNION) {
return TSDB_CODE_SUCCESS;
}
int32_t index = 0;
SNode* pProj = NULL;
WHERE_EACH(pProj, pSetOp->pProjectionList) {

8
source/libs/planner/src/planner.c
View File

@ -19,6 +19,14 @@
#include "scalar.h"
#include "tglobal.h"
static void debugPrintNode(SNode* pNode) {
char* pStr = NULL;
nodesNodeToString(pNode, false, &pStr, NULL);
printf("%s\n", pStr);
taosMemoryFree(pStr);
return;
}
static void dumpQueryPlan(SQueryPlan* pPlan) {
if (!tsQueryPlannerTrace) {
return;

17
tests/script/tsim/query/unionall_as_table.sim
View File

@ -25,4 +25,21 @@ if $data05 != @0021001@ then
return -1
endi
sql create table st (ts timestamp, f int) tags (t int);
sql insert into ct1 using st tags(1) values(now, 1)(now+1s, 2)
sql insert into ct2 using st tags(2) values(now+2s, 3)(now+3s, 4)
sql select count(*) from (select * from ct1 union all select * from ct2)
if $rows != 1 then
return -1
endi
if $data00 != 4 then
return -1
endi
sql select count(*) from (select * from ct1 union select * from ct2)
if $rows != 1 then
return -1
endi
if $data00 != 4 then
return -1
endi
system sh/exec.sh -n dnode1 -s stop -x SIGINT