ALTER TABLE partitioning

FROM: http://ss64.com/ora/table_a_part.html
ALTER TABLE partitioning
Change the partition properties of an existing table.Syntax:

   ALTER TABLE [schema.]table      partitioning_clause          [PARALLEL parallel_clause]             [ENABLE enable_clause | DISABLE disable_clause]                 [{ENABLE|DISABLE} TABLE LOCK]                    [{ENABLE|DISABLE} ALL TRIGGERS]; partitioning_clause:   ADD PARTITION partition    --add Range ptn      VALUES LESS THAN (value, value, [MAXVALUE],...)  [partition_description]   ADD PARTITION partition    --add Hash ptn      storage_options       extent_options      OVERFLOW         storage_options         extent_options      COMPRESS | NOCOMPRESS      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname      {UPDATE | INVALIDATE} GLOBAL INDEXES      PARALLEL int | NOPARALLEL   ADD PARTITION partition    --add List ptn      VALUES (DEFAULT | NULL | value [,…])  [partition_description]   COALESCE PARTITION partition      {UPDATE | INVALIDATE} GLOBAL INDEXES      PARALLEL int | NOPARALLEL   DROP [SUB]PARTITION partition       {UPDATE | INVALIDATE} GLOBAL INDEXES      PARALLEL int | NOPARALLEL   MODIFY PARTITION partition      storage_options       extent_options      OVERFLOW         storage_options         extent_options      COMPRESS | NOCOMPRESS      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname      ADD SUBPARTITION subpartition [VALUES (DEFAULT | NULL | value [,…])]         TABLESPACE tablespace         OVERFLOW [TABLESPACE tablespace]         LOB (LOB_item) STORE AS LOB_segname         VARRAY varray STORE AS LOB_segname            [{UPDATE | INVALIDATE} GLOBAL INDEXES]            [PARALLEL int | NOPARALLEL]      COALESCE SUBPARTITION            -- for HASH Partition         [{UPDATE | INVALIDATE} GLOBAL INDEXES]            [PARALLEL int | NOPARALLEL]      MAPPING TABLE UPDATE BLOCK REFERENCES      MAPPING TABLE ALLOCATE EXTENT [( [size int K | M ]         [DATAFILE 'filename' ] [INSTANCE int] )      MAPPING TABLE DEALLOCATE UNUSED [KEEP int K | M ]      {ADD | DROP} VALUES (partition_value,...)   -- for List Partition      [REBUILD] UNUSABLE LOCAL INDEXES   MODIFY DEFAULT ATTRIBUTES [FOR PARTITION partition] storage_options      [PCTTHRESHOLD int] [[NO]COMPRESS [int]] [overflow_clause]          [LOB lob_item LOB_parameters][VARRAY varray LOB_parameters]   MODIFY SUBPARTITION subpartion      ALLOCATE EXTENT [( [size int K | M ]         [DATAFILE 'filename' ] [INSTANCE int] )      DEALLOCATE UNUSED [KEEP int K | M ]         {ADD | DROP} VALUES (partition_value,...)      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname      {ADD | DROP} VALUES (partition_value,...)   -- for List Partition      [REBUILD] UNUSABLE LOCAL INDEXES   MOVE PARTITION partition [MAPPING TABLE]      storage_options [COMPRESS [int] | NOCOMPRESS]      OVERFLOW storage_options      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname      SUBPARTITIONS hash_subpartition_quantity [STORE IN (tablespace,...)]      (SUBPARTITION subpartition [VALUES (DEFAULT | NULL | value,...)]          TABLESPACE tablespace          OVERFLOW [TABLESPACE tablespace]          LOB (LOB_item) STORE AS LOB_segname          VARRAY varray STORE AS LOB_segname ,SUBPARTITION...)      {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL|PARALLEL int}   MOVE SUBPARTITION subpartion [partition_description]      VALUES (DEFAULT | NULL | value [,…])      TABLESPACE tablespace      OVERFLOW [TABLESPACE tablespace]      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname       {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL|PARALLEL int}   RENAME [SUB]PARTITION ptn_name TO new_name   TRUNCATE [SUB]PARTITION ptn_name       {DROP|REUSE} STORAGE      {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL|PARALLEL int}   SET SUBPARTITION TEMPLATE (SUBPARTITION subpartition [VALUES (DEFAULT | NULL | value [,…])]      TABLESPACE tablespace      OVERFLOW [TABLESPACE tablespace]      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname )   SET SUBPARTITION TEMPLATE int    --hash SubPartition quantity   SPLIT PARTITION ptn_name AT (value, value...)      INTO (ptn_spec, ptn_spec)      {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL|PARALLEL int}   SPLIT SUBPARTITION ptn_name VALUES (value, [NULL],value [,…])      INTO (ptn_spec, ptn_spec)      {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL|PARALLEL int}   MERGE PARTITIONS ptn_1, ptn_2       INTO PARTITION partition       storage_options       extent_options      OVERFLOW         storage_options         extent_options      COMPRESS | NOCOMPRESS      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname      SUBPARTITIONS hash_subpartition_quantity [STORE IN (tablespace [,…])]      (SUBPARTITION subpartition [VALUES (DEFAULT | NULL | value [,…])]          TABLESPACE tablespace          OVERFLOW [TABLESPACE tablespace]          LOB (LOB_item) STORE AS LOB_segname          VARRAY varray STORE AS LOB_segname ,SUBPARTITION...)      {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL | PARALLEL int}   MERGE SUBPARTITIONS subptn_1, subptn_2       INTO SUBPARTITION subpartition       VALUES LESS THAN (value, value, [MAXVALUE] [,…])       TABLESPACE tablespace      OVERFLOW [TABLESPACE tablespace]      LOB (LOB_item) STORE AS LOB_segname      VARRAY varray STORE AS LOB_segname ,SUBPARTITION...       {UPDATE | INVALIDATE} GLOBAL INDEXES      {NOPARALLEL | PARALLEL int}   EXCHANGE [SUB]PARTITION [sub]partition WITH TABLE table      {INCLUDING|EXCLUDING} INDEXES      {WITH|WITHOUT} VALIDATION      EXCEPTIONS INTO [schema.]table      {UPDATE | INVALIDATE} GLOBAL INDEXES         {NOPARALLEL|PARALLEL int}storage_options:   PCTFREE int   PCTUSED int   INITTRANS int   MAXTRANS int   STORAGE storage_clause   TABLESPACE tablespace   {LOGGING|NOLOGGING}overflow_clause:      OVERFLOW ALLOCATE EXTENT [( [size int K | M ]      [DATAFILE 'filename' ] [INSTANCE int] )]   OVERFLOW DEALLOCATE UNUSED [KEEP int K | M ]   ADD OVERFLOW storage_options [(PARTITION storage_options [,PARTITION storage_options [,…]])]extent_options:   ALLOCATE EXTENT [( [size int K | M ]      [DATAFILE 'filename' ] [INSTANCE int] )]   DEALLOCATE UNUSED [KEEP int K | M ]

Examples

Add a column to a table   ALTER TABLE STAFF_OPTIONS      ADD SO_INSURANCE_PROVIDER Varchar2(35);

 

Add  a default value to a column   ALTER TABLE STAFF_OPTIONS      MODIFY SO_INSURANCE_PROVIDER Varchar2(35) DEFAULT 'ABC Ins';

 

Add two columns to a table and remove a constraint   ALTER TABLE STAFF_OPTIONS      ADD (SO_STAFF_ID INT, SO_PENSION_ID INT)          STORAGE INITIAL 10 K          NEXT 10 K          MAXEXTENTS 121          PCTINCREASE 0          FREELISTS 2      DROP CONSTRAINT cons_SO;

"You're either part of the solution or part of the problem" - Eldridge Cleaver Related Commands:
ANALYZE TABLE COMPUTE STATISTICS ALTER INDEX ALTER VIEW COMMENT - Add a comment to a table or a column. RENAME DBMS_REDEFINITION Related Views:

  DBA_ALL_TABLES       ALL_ALL_TABLES       USER_ALL_TABLES  DBA_TABLES           ALL_TABLES           USER_TABLES         TAB  DBA_TAB_COLUMNS      ALL_TAB_COLUMNS      USER_TAB_COLUMNS   DBA_TAB_PARTITIONS   ALL_TAB_PARTITIONS   USER_TAB_PARTITIONS   DBA_PART_TABLES      ALL_PART_TABLES      USER_PART_TABLES<!--mce:0--><!--mce:1--><!--mce:2--><!--mce:3--><!--mce:4--><!--mce:5-->