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59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
#pragma once
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#include <Parsers/IAST.h>
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#include <map>
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namespace DB
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{
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class ASTColumns;
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class ASTCreateQuery;
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class ASTIdentifier;
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class ASTStorage;
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/// Storage and column overrides for a single table, for example:
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///
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/// TABLE OVERRIDE `foo` (PARTITION BY toYYYYMM(`createtime`))
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///
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class ASTTableOverride : public IAST
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{
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public:
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String table_name;
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ASTColumns * columns = nullptr;
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ASTStorage * storage = nullptr;
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bool is_standalone = true;
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String getID(char) const override { return "TableOverride " + table_name; }
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ASTPtr clone() const override;
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void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
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void forEachPointerToChild(std::function<void(void**)> f) override
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{
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f(reinterpret_cast<void **>(&columns));
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f(reinterpret_cast<void **>(&storage));
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}
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};
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/// List of table overrides, for example:
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///
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/// TABLE OVERRIDE `foo` (PARTITION BY toYYYYMM(`createtime`)),
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/// TABLE OVERRIDE `bar` (SAMPLE BY `id`)
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///
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class ASTTableOverrideList : public IAST
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{
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public:
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String getID(char) const override { return "TableOverrideList"; }
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ASTPtr clone() const override;
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void formatImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
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void setTableOverride(const String & name, ASTPtr ast);
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void removeTableOverride(const String & name);
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ASTPtr tryGetTableOverride(const String & name) const;
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bool hasOverride(const String & name) const;
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private:
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std::map<String, size_t> positions;
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};
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}
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