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qc_mysqlembedded: Collect ... WHERE EXISTS ...

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Information was not collected from the subselect in a situation
e.g. like

    SELECT ... WHERE NOT EXISTS (SELECT ...)
This commit is contained in:
Johan Wikman
2017-06-29 14:57:49 +02:00
parent 5597db255b
commit 48a67eeef2
1 changed files with 20 additions and 1 deletions
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21
query_classifier/qc_mysqlembedded/qc_mysqlembedded.cc
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@ -2442,6 +2442,7 @@ static bool should_function_be_ignored(parsing_info_t* pi, const char* func_name
(strcasecmp(func_name, "cast_as_unsigned") == 0) || (strcasecmp(func_name, "cast_as_unsigned") == 0) ||
(strcasecmp(func_name, "get_user_var") == 0) || (strcasecmp(func_name, "get_user_var") == 0) ||
(strcasecmp(func_name, "get_system_var") == 0) || (strcasecmp(func_name, "get_system_var") == 0) ||
(strcasecmp(func_name, "not") == 0) ||
(strcasecmp(func_name, "set_user_var") == 0) || (strcasecmp(func_name, "set_user_var") == 0) ||
(strcasecmp(func_name, "set_system_var") == 0)) (strcasecmp(func_name, "set_system_var") == 0))
{ {
@ -2678,7 +2679,25 @@ static void update_field_infos(parsing_info_t* pi,
break; break;
case Item_subselect::EXISTS_SUBS: case Item_subselect::EXISTS_SUBS:
// TODO: Handle these explicitly as well. {
Item_exists_subselect* exists_subselect_item =
static_cast<Item_exists_subselect*>(item);
st_select_lex* ssl = exists_subselect_item->get_select_lex();
if (ssl)
{
uint32_t sub_usage = usage;
sub_usage &= ~QC_USED_IN_SELECT;
sub_usage |= QC_USED_IN_SUBSELECT;
update_field_infos(pi,
get_lex(pi),
ssl,
sub_usage,
excludep);
}
}
break; break;
case Item_subselect::SINGLEROW_SUBS: case Item_subselect::SINGLEROW_SUBS: