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MCOL-2178 Fix for handlers fallback mechanism patch.

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I returned if predicate that guards FE-BE initial connection
block. This predicated had been removed by accident in cb36041

Since we switched to internal ORDER BY FE now reduces the
default limit value to uint64-2 this broke a predicate check
for correlated subqueries. I replaced a predicate with more
reasonable to avoid false positives.
This commit is contained in:
Roman Nozdrin
2019-08-30 02:00:03 +03:00
parent 9b602afab7
commit 734518bb41
2 changed files with 46 additions and 44 deletions
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3
dbcon/mysql/ha_calpont_execplan.cpp
View File

@ -7865,8 +7865,7 @@ int getSelectPlan(gp_walk_info& gwi, SELECT_LEX& select_lex,
}
// We don't currently support limit with correlated subquery
if (csep->limitNum() != (uint64_t) - 1 &&
gwi.subQuery && !gwi.correlatedTbNameVec.empty())
if (gwi.subQuery && !gwi.correlatedTbNameVec.empty() && csep->hasOrderBy())
{
gwi.fatalParseError = true;
gwi.parseErrorText = IDBErrorInfo::instance()->errorMsg(ERR_NON_SUPPORT_LIMIT_SUB);

3
dbcon/mysql/ha_calpont_impl.cpp
View File

@ -5319,6 +5319,8 @@ int ha_cs_impl_select_next(uchar* buf, TABLE* table)
sm::tableid_t tableid= execplan::IDB_VTABLE_ID;
sm::cpsm_conhdl_t* hndl= ci->cal_conn_hndl;
if (!ti.tpl_ctx || !ti.tpl_scan_ctx || (hndl && hndl->queryState == sm::NO_QUERY))
{
if (ti.tpl_ctx == 0)
{
ti.tpl_ctx = new sm::cpsm_tplh_t();
@ -5365,6 +5367,7 @@ int ha_cs_impl_select_next(uchar* buf, TABLE* table)
}
ci->tableMap[table] = ti;
hndl->queryState= sm::QUERY_IN_PROCESS;
}
if (!ti.tpl_ctx || !ti.tpl_scan_ctx)
{