1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
#pragma once
#include <Databases/IDatabase.h>
#include <Interpreters/IInterpreter.h>
#include <Parsers/ASTDropQuery.h>
#include <Parsers/IAST_fwd.h>
namespace DB
{
class Context;
using DatabaseAndTable = std::pair<DatabasePtr, StoragePtr>;
class AccessRightsElements;
/** Allow to either drop table with all its data (DROP),
* or remove information about table (just forget) from server (DETACH),
* or just clear all data in table (TRUNCATE).
*/
class InterpreterDropQuery : public IInterpreter, WithMutableContext
{
public:
InterpreterDropQuery(const ASTPtr & query_ptr_, ContextMutablePtr context_);
/// Drop table or database.
BlockIO execute() override;
static void executeDropQuery(ASTDropQuery::Kind kind, ContextPtr global_context, ContextPtr current_context,
const StorageID & target_table_id, bool sync, bool ignore_sync_setting = false, bool need_ddl_guard = false);
bool supportsTransactions() const override;
private:
AccessRightsElements getRequiredAccessForDDLOnCluster() const;
ASTPtr query_ptr;
BlockIO executeToDatabase(const ASTDropQuery & query);
BlockIO executeToDatabaseImpl(const ASTDropQuery & query, DatabasePtr & database, std::vector<UUID> & uuids_to_wait);
BlockIO executeToTable(ASTDropQuery & query);
BlockIO executeToTableImpl(ContextPtr context_, ASTDropQuery & query, DatabasePtr & db, UUID & uuid_to_wait);
static void waitForTableToBeActuallyDroppedOrDetached(const ASTDropQuery & query, const DatabasePtr & db, const UUID & uuid_to_wait);
BlockIO executeToDictionary(const String & database_name, const String & dictionary_name, ASTDropQuery::Kind kind, bool if_exists, bool is_temporary, bool no_ddl_lock);
BlockIO executeToTemporaryTable(const String & table_name, ASTDropQuery::Kind kind);
};
}
|
