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MCOL-1052 WIP Incorporate a fix for MCOL-1348. Comment on the group_by_handler class.

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This commit is contained in:
Roman Nozdrin
2018-04-20 20:44:28 +03:00
parent 33a5969dc3
commit b8f3cb2a98
4 changed files with 105 additions and 34 deletions
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25
dbcon/mysql/ha_calpont.h
View File

@@ -248,6 +248,30 @@ public:
};
/*@brief group_by_handler class*/
/***********************************************************
* DESCRIPTION:
* Provides server with group_by_handler API methods.
* One should read comments in server/sql/group_by_handler.h
* Attributes:
* select - attribute contains all GROUP BY, HAVING, ORDER items and calls it
* an extended SELECT list accordin to comments in
* server/sql/group_handler.cc.
* So the temporary table for
* select count(*) from b group by a having a > 3 order by a
* will have 4 columns not 1.
* However server ignores all NULLs used in GROUP BY, HAVING, ORDER.
* table_list - contains all tables involved. Must be CS tables only.
* distinct - looks like a useless thing for now. Couldn't get it set by server.
* where - where items.
* group_by - group by ORDER items.
* order_by - order by ORDER items.
* having - having Item.
* Methods:
* init_scan - get plan and send it to ExeMgr. Get the execution result.
* next_row - get a row back from sm.
* end_scan - finish and clean the things up.
***********************************************************/
class ha_calpont_group_by_handler: public group_by_handler
{
public:
@@ -265,6 +289,7 @@ class ha_calpont_group_by_handler: public group_by_handler
int init_scan();
int next_row();
int end_scan();
List<Item> *select;
TABLE_LIST *table_list;
bool distinct;

6
dbcon/mysql/ha_calpont_impl.cpp
View File

@@ -5103,9 +5103,10 @@ int ha_calpont_impl_group_by_init(ha_calpont_group_by_handler* group_hand, TABLE
if (thd->infinidb_vtable.vtable_state == THD::INFINIDB_ERROR)
return ER_INTERNAL_ERROR;
// MCOL-1052
// by pass the extra union trips. return 0
if (thd->infinidb_vtable.isUnion && thd->infinidb_vtable.vtable_state == THD::INFINIDB_CREATE_VTABLE)
return 0;
//if (thd->infinidb_vtable.isUnion && thd->infinidb_vtable.vtable_state == THD::INFINIDB_CREATE_VTABLE)
// return 0;
// @bug 2232. Basic SP support. Error out non support sp cases.
// @bug 3939. Only error out for sp with select. Let pass for alter table in sp.
@@ -5689,6 +5690,7 @@ int ha_calpont_impl_group_by_end(ha_calpont_group_by_handler* group_hand, TABLE*
if (thd->infinidb_vtable.cal_conn_info)
ci = reinterpret_cast<cal_connection_info*>(thd->infinidb_vtable.cal_conn_info);
// MCOL-1052
//if (thd->infinidb_vtable.vtable_state == THD::INFINIDB_ORDER_BY )
//{
// thd->infinidb_vtable.vtable_state = THD::INFINIDB_SELECT_VTABLE;// flip back to normal state

12
dbcon/mysql/ha_window_function.cpp
View File

@@ -512,6 +512,18 @@ ReturnedColumn* buildWindowFunctionColumn(Item* item, gp_walk_info& gwi, bool& n
{
Item* orderItem = *(orderCol->item);
srcp.reset(buildReturnedColumn(orderItem, gwi, nonSupport));
// MCOL-1052 GROUP BY handler has all of query's agg Items
// as field and correlates them with its extended SELECT Items.
if (!srcp)
{
orderItem = orderCol->item_ptr;
if (orderItem)
{
gwi.fatalParseError = false;
srcp.reset(buildReturnedColumn(orderItem, gwi, nonSupport));
}
}
if (!srcp)
return nullOnError(gwi);