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MCOL-3788 Remove save/restore_group_list impl since the optimizer call

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does not happen in create_SH anymore
This commit is contained in:
Gagan Goel
2020-02-20 17:15:30 +00:00
parent 81189591a4
commit dd89943a5b
1 changed files with 1 additions and 45 deletions
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46
dbcon/mysql/ha_mcs_pushdown.cpp
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@ -64,36 +64,6 @@ void restore_optimizer_flags(THD *thd_)
}
}
int save_group_list(THD* thd, SELECT_LEX* select_lex, Group_list_ptrs **group_list_ptrs)
{
if (select_lex->group_list.first)
{
void *mem = thd->stmt_arena->alloc(sizeof(Group_list_ptrs));
if (!mem || !((*group_list_ptrs) = new (mem) Group_list_ptrs(thd->stmt_arena->mem_root)) ||
(*group_list_ptrs)->reserve(select_lex->group_list.elements))
{
return 1;
}
for (ORDER *order = select_lex->group_list.first; order; order = order->next)
{
(*group_list_ptrs)->push_back(order);
}
}
return 0;
}
void restore_group_list(SELECT_LEX* select_lex, Group_list_ptrs *group_list_ptrs)
{
select_lex->group_list.empty();
for (size_t i = 0; i < group_list_ptrs->size(); i++)
{
ORDER *order = (*group_list_ptrs)[i];
select_lex->group_list.link_in_list(order, &order->next);
}
}
/*@brief find_tables - This traverses Item */
/**********************************************************
* DESCRIPTION:
@ -779,16 +749,8 @@ create_columnstore_select_handler(THD* thd, SELECT_LEX* select_lex)
return handler;
}
// Remove this in 1.4.3
// Save the original group_list as it can be mutated by the
// optimizer which calls the remove_const() function
Group_list_ptrs *group_list_ptrs = NULL;
if (save_group_list(thd, select_lex, &group_list_ptrs))
{
return handler;
}
bool unsupported_feature = false;
// Select_handler use the short-cut that effectively disables
// INSERT..SELECT, LDI, SELECT..INTO OUTFILE
if ((thd->lex)->sql_command == SQLCOM_INSERT_SELECT
@ -834,12 +796,6 @@ create_columnstore_select_handler(THD* thd, SELECT_LEX* select_lex)
}
}
// Restore back the saved group_list
if (group_list_ptrs)
{
restore_group_list(select_lex, group_list_ptrs);
}
// Iterate and traverse through the item list and do not create SH
// if the unsupported (set/get_user_var) functions are present.
TABLE_LIST* table_ptr = select_lex->get_table_list();