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Reformat all code to coding standard
This commit is contained in:
Andrew Hutchings
397
dbcon/mysql/ha_in_sub.cpp
Executable file → Normal file
397
dbcon/mysql/ha_in_sub.cpp
Executable file → Normal file
@ -50,44 +50,52 @@ using namespace logging;
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namespace cal_impl_if
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{
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extern void parse_item (Item *item, vector<Item_field*>& field_vec, bool& hasNonSupportItem, uint16& parseInfo);
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extern void parse_item (Item* item, vector<Item_field*>& field_vec, bool& hasNonSupportItem, uint16& parseInfo);
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void makeAntiJoin(const ParseTree* n)
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{
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TreeNode *tn = n->data();
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SimpleFilter *sf = dynamic_cast<SimpleFilter*>(tn);
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if (!sf)
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return;
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uint64_t lJoinInfo = sf->lhs()->joinInfo();
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TreeNode* tn = n->data();
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SimpleFilter* sf = dynamic_cast<SimpleFilter*>(tn);
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if (lJoinInfo & JOIN_SEMI)
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{
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lJoinInfo &= ~JOIN_SEMI;
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lJoinInfo |= JOIN_ANTI;
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if (lJoinInfo & JOIN_NULLMATCH_CANDIDATE)
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lJoinInfo |= JOIN_NULL_MATCH;
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sf->lhs()->joinInfo(lJoinInfo);
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}
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uint64_t rJoinInfo = sf->rhs()->joinInfo();
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if (rJoinInfo & JOIN_SEMI)
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{
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rJoinInfo &= ~JOIN_SEMI;
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rJoinInfo |= JOIN_ANTI;
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if (rJoinInfo & JOIN_NULLMATCH_CANDIDATE)
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rJoinInfo |= JOIN_NULL_MATCH;
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sf->rhs()->joinInfo(rJoinInfo);
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}
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if (!sf)
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return;
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uint64_t lJoinInfo = sf->lhs()->joinInfo();
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if (lJoinInfo & JOIN_SEMI)
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{
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lJoinInfo &= ~JOIN_SEMI;
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lJoinInfo |= JOIN_ANTI;
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if (lJoinInfo & JOIN_NULLMATCH_CANDIDATE)
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lJoinInfo |= JOIN_NULL_MATCH;
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sf->lhs()->joinInfo(lJoinInfo);
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}
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uint64_t rJoinInfo = sf->rhs()->joinInfo();
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if (rJoinInfo & JOIN_SEMI)
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{
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rJoinInfo &= ~JOIN_SEMI;
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rJoinInfo |= JOIN_ANTI;
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if (rJoinInfo & JOIN_NULLMATCH_CANDIDATE)
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rJoinInfo |= JOIN_NULL_MATCH;
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sf->rhs()->joinInfo(rJoinInfo);
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}
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}
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InSub::InSub(gp_walk_info& gwip) : WhereSubQuery(gwip)
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{}
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InSub::InSub(gp_walk_info& gwip, Item_func* func) :
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WhereSubQuery(gwip, func)
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WhereSubQuery(gwip, func)
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{}
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InSub::InSub(const InSub& rhs) :
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WhereSubQuery(rhs.gwip(), rhs.fColumn, rhs.fSub, rhs.fFunc)
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WhereSubQuery(rhs.gwip(), rhs.fColumn, rhs.fSub, rhs.fFunc)
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{}
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InSub::~InSub()
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@ -98,86 +106,92 @@ InSub::~InSub()
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*/
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execplan::ParseTree* InSub::transform()
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{
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if (!fFunc)
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return NULL;
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if (!fFunc)
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return NULL;
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// @todo need to handle scalar IN and BETWEEN specially
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// this blocks handles only one subselect scalar
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// arg[0]: column | arg[1]: subselect
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//assert (fFunc->argument_count() == 2 && fGwip.rcWorkStack.size() >= 2);
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if (fFunc->argument_count() != 2 || fGwip.rcWorkStack.size() < 2)
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = "Unsupported item in IN subquery";
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return NULL;
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}
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// @todo need to handle scalar IN and BETWEEN specially
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// this blocks handles only one subselect scalar
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// arg[0]: column | arg[1]: subselect
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//assert (fFunc->argument_count() == 2 && fGwip.rcWorkStack.size() >= 2);
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if (fFunc->argument_count() != 2 || fGwip.rcWorkStack.size() < 2)
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = "Unsupported item in IN subquery";
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return NULL;
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}
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ReturnedColumn* rhs = fGwip.rcWorkStack.top();
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fGwip.rcWorkStack.pop();
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delete rhs;
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ReturnedColumn* lhs = fGwip.rcWorkStack.top();
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fGwip.rcWorkStack.pop();
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delete lhs;
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ReturnedColumn* rhs = fGwip.rcWorkStack.top();
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fGwip.rcWorkStack.pop();
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delete rhs;
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ReturnedColumn* lhs = fGwip.rcWorkStack.top();
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fGwip.rcWorkStack.pop();
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delete lhs;
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fSub = (Item_subselect*)(fFunc->arguments()[1]);
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idbassert(fSub && fFunc);
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fSub = (Item_subselect*)(fFunc->arguments()[1]);
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idbassert(fSub && fFunc);
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SCSEP csep (new CalpontSelectExecutionPlan());
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csep->sessionID(fGwip.sessionid);
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csep->location(CalpontSelectExecutionPlan::WHERE);
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csep->subType (CalpontSelectExecutionPlan::IN_SUBS);
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SCSEP csep (new CalpontSelectExecutionPlan());
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csep->sessionID(fGwip.sessionid);
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csep->location(CalpontSelectExecutionPlan::WHERE);
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csep->subType (CalpontSelectExecutionPlan::IN_SUBS);
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// gwi for the sub query
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gp_walk_info gwi;
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gwi.thd = fGwip.thd;
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gwi.subQuery = this;
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// gwi for the sub query
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gp_walk_info gwi;
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gwi.thd = fGwip.thd;
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gwi.subQuery = this;
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// @4827 merge table list to gwi in case there is FROM sub to be referenced
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// in the FROM sub
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gwi.derivedTbCnt = fGwip.derivedTbList.size();
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uint32_t tbCnt = fGwip.tbList.size();
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// @4827 merge table list to gwi in case there is FROM sub to be referenced
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// in the FROM sub
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gwi.derivedTbCnt = fGwip.derivedTbList.size();
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uint32_t tbCnt = fGwip.tbList.size();
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gwi.tbList.insert(gwi.tbList.begin(), fGwip.tbList.begin(), fGwip.tbList.end());
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gwi.derivedTbList.insert(gwi.derivedTbList.begin(), fGwip.derivedTbList.begin(), fGwip.derivedTbList.end());
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gwi.tbList.insert(gwi.tbList.begin(), fGwip.tbList.begin(), fGwip.tbList.end());
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gwi.derivedTbList.insert(gwi.derivedTbList.begin(), fGwip.derivedTbList.begin(), fGwip.derivedTbList.end());
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if (getSelectPlan(gwi, *(fSub->get_select_lex()), csep) != 0)
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{
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fGwip.fatalParseError = true;
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if (gwi.fatalParseError && !gwi.parseErrorText.empty())
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fGwip.parseErrorText = gwi.parseErrorText;
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else
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fGwip.parseErrorText = "Error occured in InSub::transform()";
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return NULL;
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}
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if (getSelectPlan(gwi, *(fSub->get_select_lex()), csep) != 0)
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{
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fGwip.fatalParseError = true;
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// remove outer query tables
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CalpontSelectExecutionPlan::TableList tblist;
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if (csep->tableList().size() >= tbCnt)
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tblist.insert(tblist.begin(),csep->tableList().begin()+tbCnt, csep->tableList().end());
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CalpontSelectExecutionPlan::SelectList derivedTbList;
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if (csep->derivedTableList().size() >= gwi.derivedTbCnt)
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derivedTbList.insert(derivedTbList.begin(),
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csep->derivedTableList().begin()+gwi.derivedTbCnt,
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csep->derivedTableList().end());
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if (gwi.fatalParseError && !gwi.parseErrorText.empty())
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fGwip.parseErrorText = gwi.parseErrorText;
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else
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fGwip.parseErrorText = "Error occured in InSub::transform()";
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csep->tableList(tblist);
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csep->derivedTableList(derivedTbList);
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return NULL;
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}
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ExistsFilter *subFilter = new ExistsFilter();
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subFilter->sub(csep);
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// remove outer query tables
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CalpontSelectExecutionPlan::TableList tblist;
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if (gwi.subQuery->correlated())
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subFilter->correlated(true);
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else
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subFilter->correlated(false);
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if (fGwip.clauseType == HAVING && subFilter->correlated())
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = logging::IDBErrorInfo::instance()->errorMsg(logging::ERR_NON_SUPPORT_HAVING);
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}
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if (csep->tableList().size() >= tbCnt)
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tblist.insert(tblist.begin(), csep->tableList().begin() + tbCnt, csep->tableList().end());
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fGwip.subselectList.push_back(csep);
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return new ParseTree(subFilter);
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CalpontSelectExecutionPlan::SelectList derivedTbList;
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if (csep->derivedTableList().size() >= gwi.derivedTbCnt)
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derivedTbList.insert(derivedTbList.begin(),
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csep->derivedTableList().begin() + gwi.derivedTbCnt,
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csep->derivedTableList().end());
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csep->tableList(tblist);
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csep->derivedTableList(derivedTbList);
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ExistsFilter* subFilter = new ExistsFilter();
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subFilter->sub(csep);
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if (gwi.subQuery->correlated())
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subFilter->correlated(true);
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else
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subFilter->correlated(false);
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if (fGwip.clauseType == HAVING && subFilter->correlated())
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = logging::IDBErrorInfo::instance()->errorMsg(logging::ERR_NON_SUPPORT_HAVING);
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}
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fGwip.subselectList.push_back(csep);
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return new ParseTree(subFilter);
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}
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/**
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@ -186,88 +200,104 @@ execplan::ParseTree* InSub::transform()
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*/
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void InSub::handleFunc(gp_walk_info* gwip, Item_func* func)
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{
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if (func->functype() == Item_func::TRIG_COND_FUNC || func->functype() == Item_func::COND_OR_FUNC)
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{
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// purpose: remove the isnull() function from the parsetree in ptWorkStack.
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// IDB handles the null semantics in the join operation
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// trigcond(or_cond) is the only form we recognize for now
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if (func->argument_count() > 2)
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = "Unsupported item in IN subquery";
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return;
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}
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Item_cond* cond;
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if (func->functype() == Item_func::TRIG_COND_FUNC || func->functype() == Item_func::COND_OR_FUNC)
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{
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// purpose: remove the isnull() function from the parsetree in ptWorkStack.
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// IDB handles the null semantics in the join operation
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// trigcond(or_cond) is the only form we recognize for now
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if (func->argument_count() > 2)
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{
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fGwip.fatalParseError = true;
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fGwip.parseErrorText = "Unsupported item in IN subquery";
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return;
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}
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if (func->functype() == Item_func::TRIG_COND_FUNC)
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{
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Item* item;
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if (func->arguments()[0]->type() == Item::REF_ITEM)
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item = (Item_ref*)(func->arguments()[0])->real_item();
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else
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item = func->arguments()[0];
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cond = (Item_cond*)(item);
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}
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else
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{
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cond = (Item_cond*)(func);
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}
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if (cond->functype() == Item_func::COND_OR_FUNC)
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{
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// (cache=item) case. do nothing. ignore trigcond()?
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if (cond->argument_list()->elements == 1)
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return;
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// (cache=item or isnull(item)) case. remove "or isnull()"
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if (cond->argument_list()->elements == 2)
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{
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// don't know how to deal with this. don't think it's a fatal error either.
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if (gwip->ptWorkStack.empty())
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return;
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ParseTree *pt = gwip->ptWorkStack.top();
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if (!pt->left() || !pt->right())
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return;
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SimpleFilter *sf = dynamic_cast<SimpleFilter*>(pt->left()->data());
|
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//assert (sf && sf->op()->op() == execplan::OP_ISNULL);
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if (!sf || sf->op()->op() != execplan::OP_ISNULL)
|
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return;
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delete sf;
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sf = dynamic_cast<SimpleFilter*>(pt->right()->data());
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//idbassert(sf && sf->op()->op() == execplan::OP_EQ);
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if (!sf || sf->op()->op() != execplan::OP_EQ)
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return;
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Item_cond* cond;
|
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// set NULLMATCH for both operand. It's really a setting for the join.
|
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// should only set NULLMATCH when the subtype is NOT_IN. for some IN subquery
|
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// with aggregation column, MySQL inefficiently convert to:
|
||||
// (cache=item or item is null) and item is not null, which is equivalent to
|
||||
// cache = item. Do not set NULLMATCH for this case.
|
||||
// Because we don't know IN or NOTIN yet, set candidate bit and switch to NULLMATCH
|
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// later in handleNot function.
|
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if (sf->lhs()->joinInfo() & JOIN_CORRELATED)
|
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sf->lhs()->joinInfo(sf->lhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
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if (sf->rhs()->joinInfo() & JOIN_CORRELATED)
|
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sf->rhs()->joinInfo(sf->rhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
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pt = pt->right();
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gwip->ptWorkStack.pop();
|
||||
gwip->ptWorkStack.push(pt);
|
||||
}
|
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}
|
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else if (cond->functype() == Item_func::EQ_FUNC)
|
||||
{
|
||||
// not in (select const ...)
|
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if (gwip->ptWorkStack.empty())
|
||||
return;
|
||||
ParseTree *pt = gwip->ptWorkStack.top();
|
||||
SimpleFilter *sf = dynamic_cast<SimpleFilter*>(pt->data());
|
||||
if (!sf || sf->op()->op() != execplan::OP_EQ)
|
||||
return;
|
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if (func->functype() == Item_func::TRIG_COND_FUNC)
|
||||
{
|
||||
Item* item;
|
||||
|
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if (sf->lhs()->joinInfo() & JOIN_CORRELATED)
|
||||
sf->lhs()->joinInfo(sf->lhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
||||
if (sf->rhs()->joinInfo() & JOIN_CORRELATED)
|
||||
sf->rhs()->joinInfo(sf->rhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
||||
}
|
||||
}
|
||||
if (func->arguments()[0]->type() == Item::REF_ITEM)
|
||||
item = (Item_ref*)(func->arguments()[0])->real_item();
|
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else
|
||||
item = func->arguments()[0];
|
||||
|
||||
cond = (Item_cond*)(item);
|
||||
}
|
||||
else
|
||||
{
|
||||
cond = (Item_cond*)(func);
|
||||
}
|
||||
|
||||
if (cond->functype() == Item_func::COND_OR_FUNC)
|
||||
{
|
||||
// (cache=item) case. do nothing. ignore trigcond()?
|
||||
if (cond->argument_list()->elements == 1)
|
||||
return;
|
||||
|
||||
// (cache=item or isnull(item)) case. remove "or isnull()"
|
||||
if (cond->argument_list()->elements == 2)
|
||||
{
|
||||
// don't know how to deal with this. don't think it's a fatal error either.
|
||||
if (gwip->ptWorkStack.empty())
|
||||
return;
|
||||
|
||||
ParseTree* pt = gwip->ptWorkStack.top();
|
||||
|
||||
if (!pt->left() || !pt->right())
|
||||
return;
|
||||
|
||||
SimpleFilter* sf = dynamic_cast<SimpleFilter*>(pt->left()->data());
|
||||
|
||||
//assert (sf && sf->op()->op() == execplan::OP_ISNULL);
|
||||
if (!sf || sf->op()->op() != execplan::OP_ISNULL)
|
||||
return;
|
||||
|
||||
delete sf;
|
||||
sf = dynamic_cast<SimpleFilter*>(pt->right()->data());
|
||||
|
||||
//idbassert(sf && sf->op()->op() == execplan::OP_EQ);
|
||||
if (!sf || sf->op()->op() != execplan::OP_EQ)
|
||||
return;
|
||||
|
||||
// set NULLMATCH for both operand. It's really a setting for the join.
|
||||
// should only set NULLMATCH when the subtype is NOT_IN. for some IN subquery
|
||||
// with aggregation column, MySQL inefficiently convert to:
|
||||
// (cache=item or item is null) and item is not null, which is equivalent to
|
||||
// cache = item. Do not set NULLMATCH for this case.
|
||||
// Because we don't know IN or NOTIN yet, set candidate bit and switch to NULLMATCH
|
||||
// later in handleNot function.
|
||||
if (sf->lhs()->joinInfo() & JOIN_CORRELATED)
|
||||
sf->lhs()->joinInfo(sf->lhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
||||
|
||||
if (sf->rhs()->joinInfo() & JOIN_CORRELATED)
|
||||
sf->rhs()->joinInfo(sf->rhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
||||
|
||||
pt = pt->right();
|
||||
gwip->ptWorkStack.pop();
|
||||
gwip->ptWorkStack.push(pt);
|
||||
}
|
||||
}
|
||||
else if (cond->functype() == Item_func::EQ_FUNC)
|
||||
{
|
||||
// not in (select const ...)
|
||||
if (gwip->ptWorkStack.empty())
|
||||
return;
|
||||
|
||||
ParseTree* pt = gwip->ptWorkStack.top();
|
||||
SimpleFilter* sf = dynamic_cast<SimpleFilter*>(pt->data());
|
||||
|
||||
if (!sf || sf->op()->op() != execplan::OP_EQ)
|
||||
return;
|
||||
|
||||
if (sf->lhs()->joinInfo() & JOIN_CORRELATED)
|
||||
sf->lhs()->joinInfo(sf->lhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
||||
|
||||
if (sf->rhs()->joinInfo() & JOIN_CORRELATED)
|
||||
sf->rhs()->joinInfo(sf->rhs()->joinInfo() | JOIN_NULLMATCH_CANDIDATE);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
@ -277,17 +307,20 @@ void InSub::handleFunc(gp_walk_info* gwip, Item_func* func)
|
||||
*/
|
||||
void InSub::handleNot()
|
||||
{
|
||||
ParseTree *pt = fGwip.ptWorkStack.top();
|
||||
ExistsFilter *subFilter = dynamic_cast<ExistsFilter*>(pt->data());
|
||||
idbassert(subFilter);
|
||||
subFilter->notExists(true);
|
||||
SCSEP csep = subFilter->sub();
|
||||
const ParseTree* ptsub = csep->filters();
|
||||
if (ptsub)
|
||||
ptsub->walk(makeAntiJoin);
|
||||
ptsub = csep->having();
|
||||
if (ptsub)
|
||||
ptsub->walk(makeAntiJoin);
|
||||
ParseTree* pt = fGwip.ptWorkStack.top();
|
||||
ExistsFilter* subFilter = dynamic_cast<ExistsFilter*>(pt->data());
|
||||
idbassert(subFilter);
|
||||
subFilter->notExists(true);
|
||||
SCSEP csep = subFilter->sub();
|
||||
const ParseTree* ptsub = csep->filters();
|
||||
|
||||
if (ptsub)
|
||||
ptsub->walk(makeAntiJoin);
|
||||
|
||||
ptsub = csep->having();
|
||||
|
||||
if (ptsub)
|
||||
ptsub->walk(makeAntiJoin);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user