Den här artikeln innehåller SQL ALTER DATABASE syntax, som implementeras av olika databashanteringssystem (DBMS). Syntaxen är listad exakt som varje leverantör har listat den på sin webbplats. Klicka på den tillämpliga länken för att se mer information om syntaxen för en viss leverantör.
De DBMS som omfattas är MySQL, SQL Server, PostgreSQL och Oracle Database.
MySQL
Från MySQL 5.7 Referensmanual:
ALTER {DATABASE | SCHEMA} [db_name]
alter_specification ...
ALTER {DATABASE | SCHEMA} db_name
UPGRADE DATA DIRECTORY NAME
alter_specification:
[DEFAULT] CHARACTER SET [=] charset_name
| [DEFAULT] COLLATE [=] collation_name SQL-server
Från Transact-SQL-referensen:
ALTER DATABASE { database_name | CURRENT }
{
MODIFY NAME = new_database_name
| COLLATE collation_name
| <file_and_filegroup_options>
| <set_database_options>
}
[;]
<file_and_filegroup_options >::=
<add_or_modify_files>::=
<filespec>::=
<add_or_modify_filegroups>::=
<filegroup_updatability_option>::=
<set_database_options>::=
<optionspec>::=
<auto_option> ::=
<change_tracking_option> ::=
<cursor_option> ::=
<database_mirroring_option> ::=
<date_correlation_optimization_option> ::=
<db_encryption_option> ::=
<db_state_option> ::=
<db_update_option> ::=
<db_user_access_option> ::=
<external_access_option> ::=
<FILESTREAM_options> ::=
<HADR_options> ::=
<parameterization_option> ::=
<recovery_option> ::=
<service_broker_option> ::=
<snapshot_option> ::=
<sql_option> ::=
<termination> ::= PostgreSQL
Från PostgreSQL 9.5-manualen:
ALTER DATABASE name [ [ WITH ] option [ ... ] ]
where option can be:
ALLOW_CONNECTIONS allowconn
CONNECTION LIMIT connlimit
IS_TEMPLATE istemplate
ALTER DATABASE name RENAME TO new_name
ALTER DATABASE name OWNER TO { new_owner | CURRENT_USER | SESSION_USER }
ALTER DATABASE name SET TABLESPACE new_tablespace
ALTER DATABASE name SET configuration_parameter { TO | = } { value | DEFAULT }
ALTER DATABASE name SET configuration_parameter FROM CURRENT
ALTER DATABASE name RESET configuration_parameter
ALTER DATABASE name RESET ALL Oracle Database
Från Oracle Database Online Documentation 12c Release 1 (12.1):
ALTER DATABASE [ database ]
{ startup_clauses
| recovery_clauses
| database_file_clauses
| logfile_clauses
| controlfile_clauses
| standby_database_clauses
| default_settings_clauses
| instance_clauses
| security_clause
} ; Följande skisserar detaljerna i de olika klausulerna.
startup_clauses::=
{ MOUNT [ { STANDBY | CLONE } DATABASE ]
| OPEN
{ [ READ WRITE ]
[ RESETLOGS | NORESETLOGS ]
[ UPGRADE | DOWNGRADE ]
| READ ONLY
}
} recovery_clauses ::=
{ general_recovery
| managed_standby_recovery
| BEGIN BACKUP
| END BACKUP
} general_recovery ::=
RECOVER
[ AUTOMATIC ]
[ FROM 'location' ]
{ { full_database_recovery
| partial_database_recovery
| LOGFILE 'filename'
}
[ { TEST
| ALLOW integer CORRUPTION
| parallel_clause
}...
]
| CONTINUE [ DEFAULT ]
| CANCEL
} full_database_recovery ::=
[ STANDBY ] DATABASE
[ { UNTIL { CANCEL
| TIME date
| CHANGE integer
| CONSISTENT
}
| USING BACKUP CONTROLFILE
| SNAPSHOT TIME date
}...
] partial_database_recovery::=
{ TABLESPACE tablespace [, tablespace ]...
| DATAFILE { 'filename' | filenumber }
[, 'filename' | filenumber ]...
} parallel_clausule::=
{ NOPARALLEL | PARALLEL [ integer ] } managed_standby_recovery::=
RECOVER
{ MANAGED STANDBY DATABASE
[ { USING ARCHIVED LOGFILE
| DISCONNECT [FROM SESSION]
| NODELAY
| UNTIL CHANGE integer
| UNTIL CONSISTENT
| parallel_clause
}...
| FINISH
| CANCEL
]
| TO LOGICAL STANDBY { db_name | KEEP IDENTITY }
} database_file_clauses ::=
{ RENAME FILE 'filename' [, 'filename' ]...
TO 'filename'
| create_datafile_clause
| alter_datafile_clause
| alter_tempfile_clause
| move_datafile_clause
} create_datafile_clause::=
CREATE DATAFILE
{ 'filename' | filenumber }
[, 'filename' | filenumber ]...
}
[ AS { file_specification
[, file_specification ]...
| NEW
}
] alter_datafile_clause::=
DATAFILE
{ 'filename' | filenumber }
[, 'filename' | filenumber ]...
}
{ ONLINE
| OFFLINE [ FOR DROP ]
| RESIZE size_clause
| autoextend_clause
| END BACKUP
}
alter_tempfile_clause::=
TEMPFILE
{ 'filename' [, 'filename' ]...
| filenumber [, filenumber ]...
}
{ RESIZE size_clause
| autoextend_clause
| DROP [ INCLUDING DATAFILES ]
| ONLINE
| OFFLINE
} move_datafile_clause::=
MOVE DATAFILE ( 'filename' | 'ASM_filename' | file_number ) [ TO ( 'filename' | 'ASM_filename' ) ] [ REUSE ] [ KEEP ]
ASM_filnamn::=
{ fully_qualified_file_name
| numeric_file_name
| incomplete_file_name
| alias_file_name
} autoextend_clause ::=
AUTOEXTEND
{ OFF
| ON [ NEXT size_clause ]
[ maxsize_clause ]
} maxsize_clause::=
MAXSIZE { UNLIMITED | size_clause } logfile_clauses ::=
{ { ARCHIVELOG [ MANUAL ]
| NOARCHIVELOG
}
| [ NO ] FORCE LOGGING
| RENAME FILE 'filename' [, 'filename' ]...
TO 'filename'
| CLEAR [ UNARCHIVED ]
LOGFILE logfile_descriptor [, logfile_descriptor ]...
[ UNRECOVERABLE DATAFILE ]
| add_logfile_clauses
| drop_logfile_clauses
| switch_logfile_clause
| supplemental_db_logging
} add_logfile_clauses::=
ADD [ STANDBY ] LOGFILE
{
{ [ INSTANCE 'instance_name' ] | [ THREAD 'integer' ] }
[ GROUP integer ] redo_log_file_spec
[, [ GROUP integer ] redo_log_file_spec ]...
| MEMBER 'filename' [ REUSE ] [, 'filename' [ REUSE ] ]...
TO logfile_descriptor [, logfile_descriptor ]...
} drop_logfile_clauses::=
DROP [ STANDBY ] LOGFILE
{ logfile_descriptor
[, logfile_descriptor ]...
| MEMBER 'filename'
[, 'filename' ]...
} switch_logfile_clause::=
SWITCH ALL LOGFILES TO BLOCKSIZE integer
supplemental_db_logging ::=
{ ADD | DROP } SUPPLEMENTAL LOG
{ DATA
| supplemental_id_key_clause
| supplemental_plsql_clause
} supplemental_id_key_clause::=
DATA
( { ALL | PRIMARY KEY | UNIQUE | FOREIGN KEY }
[, { ALL | PRIMARY KEY | UNIQUE | FOREIGN KEY } ]...
)
COLUMNS supplemental_plsql_clause::=
DATA FOR PROCEDURAL REPLICATION
logfile_descriptor::=
{ GROUP integer
| ('filename' [, 'filename' ]...)
| 'filename'
} controlfile_clauses ::=
CREATE { [ LOGICAL | PHYSICAL ] STANDBY | FAR SYNC INSTANCE }
CONTROLFILE AS
'filename' [ REUSE ]
| BACKUP CONTROLFILE TO
{ 'filename' [ REUSE ]
| trace_file_clause
} standby_database_clauses ::=
{ { activate_standby_db_clause
| maximize_standby_db_clause
| register_logfile_clause
| commit_switchover_clause
| start_standby_clause
| stop_standby_clause
| convert_database_clause
} [ parallel_clause ] }
|
{ switchover_clause | failover_clause } activate_standby_db_clause::=
ACTIVATE
[ PHYSICAL | LOGICAL ]
STANDBY DATABASE
[ FINISH APPLY ] maximize_standby_db_clause::=
SET STANDBY DATABASE TO MAXIMIZE
{ PROTECTION | AVAILABILITY | PERFORMANCE } register_logfile_clause::=
REGISTER [ OR REPLACE ] [ PHYSICAL | LOGICAL ] LOGFILE [ file_specification [, file_specification ]... [ FOR logminer_session_name ]
switchover_clause::=
SWITCHOVER TO target_db_name [ VERIFY | FORCE ]
failover_clause::=
FAILOVER TO target_db_name [ FORCE ]
commit_switchover_clause::=
{ PREPARE | COMMIT } TO SWITCHOVER
[ TO { { [ PHYSICAL | LOGICAL ] PRIMARY
| [ PHYSICAL ] STANDBY
} [ { WITH | WITHOUT } SESSION SHUTDOWN
{ WAIT | NOWAIT }
]
| LOGICAL STANDBY
}
| CANCEL
] start_standby_clause::=
START LOGICAL STANDBY APPLY
[ IMMEDIATE ]
[ NODELAY ]
[ NEW PRIMARY dblink
| INITIAL [ scn_value ]
| { SKIP FAILED TRANSACTION | FINISH }
] stop_standby_clause::=
{ STOP | ABORT } LOGICAL STANDBY APPLY convert_database_clause::=
CONVERT TO ( PHYSICAL | SNAPSHOT ) STANDBY
default_settings_clauses::=
{ DEFAULT EDITION = edition_name
| SET DEFAULT { BIGFILE | SMALLFILE } TABLESPACE
| DEFAULT TABLESPACE tablespace
| DEFAULT TEMPORARY TABLESPACE { tablespace | tablespace_group_name }
| RENAME GLOBAL_NAME TO database.domain [.domain ]...
| ENABLE BLOCK CHANGE TRACKING [ USING FILE 'filename' [ REUSE ] ]
| DISABLE BLOCK CHANGE TRACKING
| [NO] FORCE FULL DATABASE CACHING
| flashback_mode_clause
| set_time_zone_clause
} set_time_zone_clause::=
SET TIME_ZONE =
'{ { + | - } hh : mi | time_zone_region }' flashback_mode_clause ::=
FLASHBACK { ON | OFF } instance_clauses::=
{ ENABLE | DISABLE } INSTANCE 'instance_name' säkerhetsklausul ::=
GUARD { ALL | STANDBY | NONE } Använda GUI
De flesta DBMS tillåter dig att ändra databaser med GUI. Detta kan vara ett GUI som levereras med produkten eller ett som utvecklats av en tredje part. Till exempel är MySQL Workbench ett GUI-verktyg som kan användas med MySQL.