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author | vitalyisaev <vitalyisaev@ydb.tech> | 2023-11-14 09:58:56 +0300 |
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committer | vitalyisaev <vitalyisaev@ydb.tech> | 2023-11-14 10:20:20 +0300 |
commit | c2b2dfd9827a400a8495e172a56343462e3ceb82 (patch) | |
tree | cd4e4f597d01bede4c82dffeb2d780d0a9046bd0 /contrib/clickhouse/src/Interpreters/PredicateRewriteVisitor.h | |
parent | d4ae8f119e67808cb0cf776ba6e0cf95296f2df7 (diff) | |
download | ydb-c2b2dfd9827a400a8495e172a56343462e3ceb82.tar.gz |
YQ Connector: move tests from yql to ydb (OSS)
Перенос папки с тестами на Коннектор из папки yql в папку ydb (синхронизируется с github).
Diffstat (limited to 'contrib/clickhouse/src/Interpreters/PredicateRewriteVisitor.h')
-rw-r--r-- | contrib/clickhouse/src/Interpreters/PredicateRewriteVisitor.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/contrib/clickhouse/src/Interpreters/PredicateRewriteVisitor.h b/contrib/clickhouse/src/Interpreters/PredicateRewriteVisitor.h new file mode 100644 index 0000000000..d2b9ece930 --- /dev/null +++ b/contrib/clickhouse/src/Interpreters/PredicateRewriteVisitor.h @@ -0,0 +1,55 @@ +#pragma once + +#include <Interpreters/Context_fwd.h> +#include <Interpreters/DatabaseAndTableWithAlias.h> +#include <Interpreters/InDepthNodeVisitor.h> +#include <Parsers/IAST_fwd.h> + +namespace DB +{ + +class ASTSelectIntersectExceptQuery; +class ASTSelectQuery; +class ASTSelectWithUnionQuery; + +class PredicateRewriteVisitorData : WithContext +{ +public: + bool is_rewrite = false; + using TypeToVisit = ASTSelectWithUnionQuery; + + void visit(ASTSelectWithUnionQuery & union_select_query, ASTPtr &); + + static bool needChild(const ASTPtr & node, const ASTPtr &) + { + return !(node && node->as<TypeToVisit>()); + } + + PredicateRewriteVisitorData( + ContextPtr context_, + const ASTs & predicates_, + const TableWithColumnNamesAndTypes & table_columns_, + bool optimize_final_, + bool optimize_with_); + +private: + const ASTs & predicates; + const TableWithColumnNamesAndTypes & table_columns; + bool optimize_final; + bool optimize_with; + + void visitFirstInternalSelect(ASTSelectQuery & select_query, ASTPtr &); + + void visitOtherInternalSelect(ASTSelectQuery & select_query, ASTPtr &); + + void visit(ASTSelectIntersectExceptQuery & intersect_except_query, ASTPtr &); + + bool rewriteSubquery(ASTSelectQuery & subquery, const Names & inner_columns); + + void visitInternalSelect(size_t index, ASTSelectQuery & select_node, ASTPtr & node); +}; + +using PredicateRewriteMatcher = OneTypeMatcher<PredicateRewriteVisitorData, PredicateRewriteVisitorData::needChild>; +using PredicateRewriteVisitor = InDepthNodeVisitor<PredicateRewriteMatcher, true>; + +} |