MySQL ALTER TABLE
Syntax
- ALTER [IGNORE] TABLE tbl_name [alter_specification [, alter_specification] ...] [partition_options]
Remarks
alter_specification: table_options
| ADD [COLUMN] col_name column_definition [FIRST | AFTER col_name ]
| ADD [COLUMN] (col_name column_definition,...)
| ADD {INDEX|KEY} [index_name] [index_type] (index_col_name,...) [index_option] ...
| ADD [CONSTRAINT [symbol]] PRIMARY KEY [index_type] (index_col_name,...) [index_option] ...
| ADD [CONSTRAINT [symbol]] UNIQUE [INDEX|KEY] [index_name] [index_type] (index_col_name,...) [index_option] ...
| ADD FULLTEXT [INDEX|KEY] [index_name] (index_col_name,...) [index_option] ...
| ADD SPATIAL [INDEX|KEY] [index_name] (index_col_name,...) [index_option] ...
| ADD [CONSTRAINT [symbol]] FOREIGN KEY [index_name] (index_col_name,...) reference_definition
| ALGORITHM [=] {DEFAULT|INPLACE|COPY}
| ALTER [COLUMN] col_name {SET DEFAULT literal | DROP DEFAULT}
| CHANGE [COLUMN] old_col_name new_col_name column_definition [FIRST|AFTER col_name]
| LOCK [=] {DEFAULT|NONE|SHARED|EXCLUSIVE}
| MODIFY [COLUMN] col_name column_definition [FIRST | AFTER col_name]
| DROP [COLUMN] col_name
| DROP PRIMARY KEY
| DROP {INDEX|KEY} index_name
| DROP FOREIGN KEY fk_symbol
| DISABLE KEYS
| ENABLE KEYS
| RENAME [TO|AS] new_tbl_name
| RENAME {INDEX|KEY} old_index_name TO new_index_name
| ORDER BY col_name [, col_name] ...
| CONVERT TO CHARACTER SET charset_name [COLLATE collation_name]
| [DEFAULT] CHARACTER SET [=] charset_name [COLLATE [=] collation_name]
| DISCARD TABLESPACE
| IMPORT TABLESPACE
| FORCE
| {WITHOUT|WITH} VALIDATION
| ADD PARTITION (partition_definition)
| DROP PARTITION partition_names
| DISCARD PARTITION {partition_names | ALL} TABLESPACE
| IMPORT PARTITION {partition_names | ALL} TABLESPACE
| TRUNCATE PARTITION {partition_names | ALL}
| COALESCE PARTITION number
| REORGANIZE PARTITION partition_names INTO (partition_definitions)
| EXCHANGE PARTITION partition_name WITH TABLE tbl_name [{WITH|WITHOUT} VALIDATION]
| ANALYZE PARTITION {partition_names | ALL}
| CHECK PARTITION {partition_names | ALL}
| OPTIMIZE PARTITION {partition_names | ALL}
| REBUILD PARTITION {partition_names | ALL}
| REPAIR PARTITION {partition_names | ALL}
| REMOVE PARTITIONING
| UPGRADE PARTITIONING
index_col_name: col_name [(length)] [ASC | DESC]
index_type: USING {BTREE | HASH}
index_option: KEY_BLOCK_SIZE [=] value
| index_type
| WITH PARSER parser_name
| COMMENT 'string'
table_options: table_option [[,] table_option] ... (see CREATE TABLE options)
partition_options: (see CREATE TABLE options)
Ref: MySQL 5.7 Reference Manual / ... / ALTER TABLE Syntax / 14.1.8 ALTER TABLE Syntax
