इस लेख में SQL ALTER DATABASE
. शामिल है सिंटैक्स, जैसा कि विभिन्न डेटाबेस प्रबंधन प्रणालियों (DBMS) द्वारा कार्यान्वित किया जाता है। सिंटैक्स को ठीक उसी तरह सूचीबद्ध किया गया है जैसे प्रत्येक विक्रेता ने इसे अपनी वेबसाइट पर सूचीबद्ध किया है। किसी विशेष विक्रेता के सिंटैक्स के बारे में अधिक विवरण देखने के लिए लागू लिंक पर क्लिक करें।
कवर किए गए DBMS में MySQL, SQL Server, PostgreSQL और Oracle डेटाबेस शामिल हैं।
MySQL
MySQL 5.7 संदर्भ मैनुअल से:
ALTER {DATABASE | SCHEMA} [db_name
]alter_specification
... ALTER {DATABASE | SCHEMA}db_name
UPGRADE DATA DIRECTORY NAMEalter_specification
: [DEFAULT] CHARACTER SET [=]charset_name
| [DEFAULT] COLLATE [=]collation_name
एसक्यूएल सर्वर
Transact-SQL संदर्भ से:
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
PostgreSQL 9.5 मैनुअल से:
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 डेटाबेस
Oracle डेटाबेस ऑनलाइन दस्तावेज़ीकरण 12c . से रिलीज़ 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 } ;
निम्नलिखित विभिन्न खंडों के विवरण को रेखांकित करता है।
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 }
सामान्य_रिकवरी ::=
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_clause::=
{ 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_filename::=
{ 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
पूरक_db_लॉगिंग ::=
{ 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 }
active_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 ]
स्विचओवर_क्लॉज::=
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'
सुरक्षा_खंड ::=
GUARD { ALL | STANDBY | NONE }
जीयूआई का उपयोग करना
अधिकांश DBMS आपको GUI का उपयोग करके डेटाबेस को बदलने की अनुमति देते हैं। यह उत्पाद के साथ आपूर्ति किया गया जीयूआई या किसी तीसरे पक्ष द्वारा विकसित जीयूआई हो सकता है। उदाहरण के लिए, MySQL कार्यक्षेत्र एक GUI टूल है जिसका उपयोग MySQL के साथ किया जा सकता है।