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MDEV-34888 Implement SEMIJOIN() and SUBQUERY() hints

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This commit is contained in:
Oleg Smirnov
2024-09-11 19:53:57 +07:00
parent e3bf4c826c
commit 2c8f6058c1
28 changed files with 3712 additions and 164 deletions
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44
sql/opt_hints_parser.cc
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@@ -57,6 +57,37 @@ Optimizer_hint_tokenizer::find_keyword(const LEX_CSTRING &str)
return TokenID::keyword_QB_NAME;
break;
case 8:
if ("SEMIJOIN"_Lex_ident_column.streq(str))
return TokenID::keyword_SEMIJOIN;
else if ("SUBQUERY"_Lex_ident_column.streq(str))
return TokenID::keyword_SUBQUERY;
break;
case 9:
if ("LOOSESCAN"_Lex_ident_column.streq(str))
return TokenID::keyword_LOOSESCAN;
break;
case 10:
if ("FIRSTMATCH"_Lex_ident_column.streq(str))
return TokenID::keyword_FIRSTMATCH;
else if ("INTOEXISTS"_Lex_ident_column.streq(str))
return TokenID::keyword_INTOEXISTS;
break;
case 11:
if ("NO_SEMIJOIN"_Lex_ident_column.streq(str))
return TokenID::keyword_NO_SEMIJOIN;
else if ("DUPSWEEDOUT"_Lex_ident_column.streq(str))
return TokenID::keyword_DUPSWEEDOUT;
break;
case 15:
if ("MATERIALIZATION"_Lex_ident_column.streq(str))
return TokenID::keyword_MATERIALIZATION;
break;
case 18:
if ("MAX_EXECUTION_TIME"_Lex_ident_column.streq(str))
return TokenID::keyword_MAX_EXECUTION_TIME;
@@ -220,3 +251,16 @@ Optimizer_hint_parser::
*pe= std::move(elem);
return push_back(pe, p->m_thd->mem_root);
}
bool
Optimizer_hint_parser::
Semijoin_strategy_list_container::add(Optimizer_hint_parser *p,
Semijoin_strategy &&elem)
{
Semijoin_strategy *pe= (Semijoin_strategy*) p->m_thd->alloc(sizeof(*pe));
if (!pe)
return true;
*pe= std::move(elem);
return push_back(pe, p->m_thd->mem_root);
}