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42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#pragma once
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#include <Databases/IDatabase.h>
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#include <Interpreters/IInterpreter.h>
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#include <Parsers/ASTDropQuery.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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using DatabaseAndTable = std::pair<DatabasePtr, StoragePtr>;
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/** Allow to either drop table with all its data (DROP),
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* or remove information about table (just forget) from server (DETACH),
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* or just clear all data in table (TRUNCATE).
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*/
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class InterpreterDropQuery : public IInterpreter
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{
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public:
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InterpreterDropQuery(const ASTPtr & query_ptr_, Context & context_);
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/// Drop table or database.
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BlockIO execute() override;
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private:
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AccessRightsElements getRequiredAccessForDDLOnCluster() const;
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ASTPtr query_ptr;
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Context & context;
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BlockIO executeToDatabase(const String & database_name, ASTDropQuery::Kind kind, bool if_exists);
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BlockIO executeToTable(const String & database_name, const String & table_name, ASTDropQuery::Kind kind, bool if_exists, bool is_temporary, bool no_ddl_lock);
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BlockIO executeToDictionary(const String & database_name, const String & dictionary_name, ASTDropQuery::Kind kind, bool if_exists, bool is_temporary, bool no_ddl_lock);
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DatabaseAndTable tryGetDatabaseAndTable(const String & database_name, const String & table_name, bool if_exists);
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BlockIO executeToTemporaryTable(const String & table_name, ASTDropQuery::Kind kind);
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};
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}
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