mirror of
https://github.com/ClickHouse/ClickHouse.git
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a1b0dede07
* made index parser * added index parsing * some fixes * added index interface and factory * fixed compilation * ptrs * added indexParts * indextypes * index condition * IndexCondition * added indexes in selectexecutor * fix * changed comment * fix * added granularity * comments * fix * fix * added writing indexes * removed indexpart class * fix * added setSkipIndexes * add rw for MergeTreeIndexes * fixes * upd error * fix * fix * reading * test index * fixed nullptr error * fixed * fix * unique names * asts -> exprlist * minmax index * fix * fixed select * fixed merging * fixed mutation * working minmax * removed test index * fixed style * added indexes to checkDataPart * added tests for minmax index * fixed constructor * fix style * fixed includes * fixed setSkipIndexes * added indexes meta to zookeeper * added parsing * removed throw * alter cmds parse * fix * added alter * fix * alters fix * fix alters * fix "after" * fixed alter * alter fix + test * fixes * upd setSkipIndexes * fixed alter bug with drop all indices * fix metadata editing * new test and repl fix * rm test files * fixed repl alter * fix * fix * indices * MTReadStream * upd test for bug * fix * added useful parsers and ast classes * fix * fix comments * replaced columns * fix * fixed parsing * fixed printing * fix err * basic IndicesDescription * go to IndicesDescr * moved indices * go to indicesDescr * fix test minmax_index* * fixed MT alter * fixed bug with replMT indices storing in zk * rename * refactoring * docs ru * docs ru * docs en * refactor * rename tests * fix docs * refactoring * fix * fix * fix * fixed style * unique idx * unique * fix * better minmax calculation * upd * added getBlock * unique_condition * added termForAST * unique * fixed not * uniqueCondition::mayBeTrueOnGranule * fix * fixed bug with double column * is always true * fix * key set * spaces * test * tests * fix * unique * fix * fix * fixed bug with duplicate column * removed unused data * fix * fixes * __bitSwapLastTwo * fix
68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
#pragma once
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#include <Databases/DatabasesCommon.h>
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namespace Poco { class Logger; }
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namespace DB
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{
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/** A non-persistent database to store temporary data.
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* It doesn't make any manipulations with filesystem.
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* All tables are created by calling code.
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* TODO: Maybe DatabaseRuntime is more suitable class name.
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*/
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class DatabaseMemory : public DatabaseWithOwnTablesBase
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{
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public:
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DatabaseMemory(String name_);
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String getDatabaseName() const override;
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String getEngineName() const override { return "Memory"; }
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void loadTables(
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Context & context,
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ThreadPool * thread_pool,
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bool has_force_restore_data_flag) override;
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void createTable(
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const Context & context,
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const String & table_name,
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const StoragePtr & table,
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const ASTPtr & query) override;
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void removeTable(
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const Context & context,
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const String & table_name) override;
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void renameTable(
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const Context & context,
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const String & table_name,
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IDatabase & to_database,
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const String & to_table_name) override;
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void alterTable(
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const Context & context,
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const String & name,
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const ColumnsDescription & columns,
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const IndicesDescription & indices,
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const ASTModifier & engine_modifier) override;
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time_t getTableMetadataModificationTime(
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const Context & context,
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const String & table_name) override;
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ASTPtr getCreateTableQuery(const Context & context, const String & table_name) const override;
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ASTPtr tryGetCreateTableQuery(const Context &, const String &) const override { return nullptr; }
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ASTPtr getCreateDatabaseQuery(const Context & context) const override;
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private:
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Poco::Logger * log;
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};
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}
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