1 | #include <Parsers/ASTSubquery.h> |
---|---|
2 | #include <Parsers/ExpressionElementParsers.h> |
3 | #include <Parsers/ParserSelectQuery.h> |
4 | #include <Parsers/ParserUnionQueryElement.h> |
5 | #include <Common/typeid_cast.h> |
6 | |
7 | |
8 | namespace DB |
9 | { |
10 | |
11 | bool ParserUnionQueryElement::parseImpl(Pos & pos, ASTPtr & node, Expected & expected) |
12 | { |
13 | if (!ParserSubquery().parse(pos, node, expected) && !ParserSelectQuery().parse(pos, node, expected)) |
14 | return false; |
15 | |
16 | if (const auto * ast_subquery = node->as<ASTSubquery>()) |
17 | node = ast_subquery->children.at(0); |
18 | |
19 | return true; |
20 | } |
21 | |
22 | } |
23 |