1 | #pragma once |
---|---|
2 | |
3 | #include <Parsers/IAST.h> |
4 | |
5 | |
6 | namespace DB |
7 | { |
8 | |
9 | struct AsteriskSemantic; |
10 | struct AsteriskSemanticImpl; |
11 | |
12 | /** Something like t.* |
13 | * It will have qualifier as its child ASTIdentifier. |
14 | */ |
15 | class ASTQualifiedAsterisk : public IAST |
16 | { |
17 | public: |
18 | String getID(char) const override { return "QualifiedAsterisk"; } |
19 | ASTPtr clone() const override |
20 | { |
21 | auto clone = std::make_shared<ASTQualifiedAsterisk>(*this); |
22 | clone->cloneChildren(); |
23 | return clone; |
24 | } |
25 | void appendColumnName(WriteBuffer & ostr) const override; |
26 | |
27 | protected: |
28 | void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override; |
29 | |
30 | private: |
31 | std::shared_ptr<AsteriskSemanticImpl> semantic; /// pimpl |
32 | |
33 | friend struct AsteriskSemantic; |
34 | }; |
35 | |
36 | } |
37 |