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37 lines
863 B
C++
37 lines
863 B
C++
#pragma once
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#include <Interpreters/IInterpreter.h>
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#include <Parsers/IAST_fwd.h>
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namespace DB
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{
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class Context;
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class AccessRightsElements;
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class ASTAlterCommand;
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/** Allows you add or remove a column in the table.
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* It also allows you to manipulate the partitions of the MergeTree family tables.
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*/
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class InterpreterAlterQuery : public IInterpreter
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{
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public:
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InterpreterAlterQuery(const ASTPtr & query_ptr_, const Context & context_);
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BlockIO execute() override;
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static AccessRightsElements getRequiredAccessForCommand(const ASTAlterCommand & command, const String & database, const String & table);
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void extendQueryLogElemImpl(QueryLogElement & elem, const ASTPtr & ast, const Context & context) const override;
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private:
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AccessRightsElements getRequiredAccess() const;
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ASTPtr query_ptr;
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const Context & context;
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};
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}
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