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MCOL-3903 Enable Select Handler to run query part of INSERT..SELECT.

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Original SH implementation sends the result set back to the client
thus it can't be used in INSERT..SELECT, SELECT INTO OUTFILE,CREATE
TABLE AS SELECT etc.
CLX-77 feature has been backported into MDB to enable SH to run
query part of the mentioned queries.
This commit is contained in:
Roman Nozdrin
2020-03-26 10:19:27 +00:00
parent 4752f5440f
commit ab2003baaa
11 changed files with 201 additions and 325 deletions
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8
dbcon/mysql/ha_mcs_impl_if.h
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@ -342,7 +342,7 @@ int cp_get_table_plan(THD* thd, execplan::SCSEP& csep, cal_impl_if::cal_table_in
int cp_get_group_plan(THD* thd, execplan::SCSEP& csep, cal_impl_if::cal_group_info& gi);
int cs_get_derived_plan(derived_handler* handler, THD* thd, execplan::SCSEP& csep, gp_walk_info& gwi);
int cs_get_select_plan(select_handler* handler, THD* thd, execplan::SCSEP& csep, gp_walk_info& gwi);
int getSelectPlan(gp_walk_info& gwi, SELECT_LEX& select_lex, execplan::SCSEP& csep, bool isUnion = false, bool isPushdownHand = false);
int getSelectPlan(gp_walk_info& gwi, SELECT_LEX& select_lex, execplan::SCSEP& csep, bool isUnion = false, bool isSelectHandlerTop = false);
int getGroupPlan(gp_walk_info& gwi, SELECT_LEX& select_lex, execplan::SCSEP& csep, cal_group_info& gi, bool isUnion = false);
void setError(THD* thd, uint32_t errcode, const std::string errmsg, gp_walk_info* gwi);
void setError(THD* thd, uint32_t errcode, const std::string errmsg);
@ -352,9 +352,9 @@ const std::string bestTableName(const Item_field* ifp);
bool isMCSTable(TABLE* table_ptr);
// execution plan util functions prototypes
execplan::ReturnedColumn* buildReturnedColumn(Item* item, gp_walk_info& gwi, bool& nonSupport, bool pushdownHand = false, bool isRefItem = false);
execplan::ReturnedColumn* buildFunctionColumn(Item_func* item, gp_walk_info& gwi, bool& nonSupport, bool pushdownHand = false, bool selectBetweenIn = false);
execplan::ArithmeticColumn* buildArithmeticColumn(Item_func* item, gp_walk_info& gwi, bool& nonSupport, bool pushdownHand = false);
execplan::ReturnedColumn* buildReturnedColumn(Item* item, gp_walk_info& gwi, bool& nonSupport, bool isRefItem = false);
execplan::ReturnedColumn* buildFunctionColumn(Item_func* item, gp_walk_info& gwi, bool& nonSupport, bool selectBetweenIn = false);
execplan::ArithmeticColumn* buildArithmeticColumn(Item_func* item, gp_walk_info& gwi, bool& nonSupport);
execplan::ConstantColumn* buildDecimalColumn(Item* item, gp_walk_info& gwi);
execplan::SimpleColumn* buildSimpleColumn(Item_field* item, gp_walk_info& gwi);
execplan::FunctionColumn* buildCaseFunction(Item_func* item, gp_walk_info& gwi, bool& nonSupport);