Table 数据表创建
数据表创建
#语法规则1
CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name
(create_definition, ...)
[table_options]
[partion_options]
#语法规则2
CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name
[(create_definition, ...)]
[table_options]
[partion_options]
select_statement
#语法规则3
CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name
{LIKE old_tbl_name | (LIKE old_tbl_name)}
#create_definition 语法
create_definition:
col_name column_definition
| [CONSTRAINT [symbol]] PRIMARY KEY [index_type] (index_col_name, ...)
[index_option] ....
| {INDEX|KEY} {index_name} [index_type] (index_col_name)
[index_option] ...
| [CONSTRAINT [symbol]] UNIQUE [INDEX|KEY]
[index_name] [index_type] (index_col_name)
[index_option] ...
| [FULLTEXT|SPATIAL] [INDEX|KEY] [index_name] (index_col_name, ....)
[index_option] ...
| [CONSTRAINT [symbol]] FOREIGN KEY
[index_name] (index_col_name, ...) reference_definition
| CHECK (EXPR)
#column_definition 语法
column_definition:
data_type [NOT NULL | NULL] [DEFAULT default_value]
[AUTO_INCREMENT] [UNIQUE [KEY] | [PRIMARY] KEY]
[COMMENT 'string']
[COLUMN_FORMAT {FIXED|DYNAMIC|DEFAULT}]
[STORAGE {DISK|MEMMORY|DEFAULT}]
[reference_definition]
#data_type 语法
data_type:
BIT[(length)]
| TINYINT[(length)] [UNSIGNED] [ZEROFILL]
| SMALLINT[(length)] [UNSIGNED] [ZEROFILL]
| MEDIUMINT[(length)] [UNSIGNED] [ZEROFILL]
| INT[(length)] [UNSIGNED] [ZEROFILL]
| INTEGER[(length)] [UNSIGNED] [ZEROFILL]
| BIGINT[(length)] [UNSIGNED] [ZEROFILL]
| REAL[(length,decimals)] [UNSIGNED] [ZEROFILL]
| DOUBLE[(length,decimals)] [UNSIGNED] [ZEROFILL]
| FLOAT[(length,decimals)] [UNSIGNED] [ZEROFILL]
| DECIMAL[(length[,decimals])] [UNSIGNED] [ZEROFILL]
| NUMERIC[(length[,decimals])] [UNSIGNED] [ZEROFILL]
| DATE
| TIME
| TIMESTAMP
| DATETIME
| YEAR
| CHAR[(length)] [BINARY]
[CHARACTER SET charset_name] [COLLATE collation_name]
| VARCHAR(length) [BINARY]
[CHARACTER SET charset_name] [COLLATE collation_name]
| BINARY[(length)]
| VARBINARY(length)
| TINYBLOB
| BLOB
| MEDIUMBLOB
| LONGBLOB
| TINYTEXT [BINARY]
[CHARACTER SET charset_name] [COLLATE collation_name]
| TEXT [BINARY]
[CHARACTER SET charset_name] [COLLATE collation_name]
| MEDIUMTEXT [BINARY]
[CHARACTER SET charset_name] [COLLATE collation_name]
| LONGTEXT [BINARY]
[CHARACTER SET charset_name] [COLLATE collation_name]
| ENUM(value1,value2,value3,...)
[CHARACTER SET charset_name] [COLLATE collation_name]
| SET(value1,value2,value3,...)
[CHARACTER SET charset_name] [COLLATE collation_name]
| spatial_type
#index_col_name 语法
col_name:
col_name [(length)] [ASC|DESC] #INDEX (name(3) ASC, email)
#index_type 语法
index_type:
USING {BTREE | HASH} # INDEX index_username_length_3 BTREE (username(3) ASC)
#index_option 语法
index_option:
KEY_BLOCK_SIZE [=] value
| index_type
| WITH PARSER parser_name
| COMMENT 'string'
#reference_definition 语法
reference_definition:
REFERENCES tbl_name (index_col_name, ...)
[MATCH FULL | MATCH PARTIAL | MATCH SIMPLE]
[ON DELETE reference_option]
[ON UPDATE reference_option]
# reference_option 语法
reference_option:
RESTRICT | CASCADE | SET NULL | NO ACTION
#table_options 语法：
table_options:
table_option [[,] table_option] ...
#table_option 语法：
table_option:
ENGINE [=] engine_name
| AUTO_INCREMENT [=] value
| AVG_ROW_LENGTH [=] value #指定行的平均长度
| MAX_ROWS [=] value # 和AVG_ROW_LENGTH 配合计算标的最大容量
| MIN_ROWS [=] value
| [DEFAULT] CHARACTER SET [=] charset_name
| CHECKSUM [=] {0|1}
| [DEFAULT] COLLATE [=] collation_name
| DATA DIRECTORY [=] 'absolute path to directory'
| DELAY_KEY_WRITE [=] {0 | 1}
| INDEX DIRECTORY [=] 'absolute path to directory'
| INSERT_METHOD [=] { NO | FIRST | LAST }
| KEY_BLOCK_SIZE [=] value
| PACK_KEYS [=] {0 | 1 | DEFAULT}
| PASSWORD [=] 'string'
| ROW_FORMAT [=] {DEFAULT|DYNAMIC|FIXED|COMPRESSED|REDUNDANT|COMPACT}
| TABLESPACE tablespace_name [STORAGE {DISK|MEMORY|DEFAULT}]
| UNION [=] (tbl_name[,tbl_name]...)
#partition_options 语法
partition_option:
PARTITION BY
{ [LINEAR] HASH (expr)
| [LINEAR] KEY [ALGORITHM = {1|2}] (column_list)
| RANGE {(expr) | COLUMNS(column_list)}
| LIST {(expr) | COLUMNS(column_list)}}
[PARTITIONS num]
[SUBPARTITION BY
{ [LINEAR] HASH(expr)
| [LINEAR] KEY [ALGORITHM = {1|2}] (column_list)
}
[SUBPARTITION num]
]
[(partition_definition [, partition_definition] ...)]
#partition_definition 语法
partition_definition:
PARTITION partition_name
[VALUES
{LESS THAN {(expr | value_list) | MAXVALUE}
|
IN (value_list)}]
[[STORAGE] ENGINE [=] engine_name]
[COMMENT [=] 'comment_text' ]
[DATA DIRECTORY [=] 'data_dir']
[INDEX DIRECTORY [=] 'index_dir']
[MAX_ROWS [=] max_number_of_rows]
[MIN_ROWS [=] min_number_of_rows]
[TABLESPACE [=] tablespace_name]
[NODEGROUP [=] node_group_id]
[(subpartition_definition [, subpartition_definition] ...)]
#subpartition_definition 语法：
subpartition_definition:
SUBPARTITION logical_name
[[STORAGE] ENGINE [=] engine_name]
[COMMENT [=] 'comment_text' ]
[DATA DIRECTORY [=] 'data_dir']
[INDEX DIRECTORY [=] 'index_dir']
[MAX_ROWS [=] max_number_of_rows]
[MIN_ROWS [=] min_number_of_rows]
[TABLESPACE [=] tablespace_name]
[NODEGROUP [=] node_group_id]
select_statement:
[IGNORE | REPLACE] [AS] SELECT ... (Some valid select statement)
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184
注意：创建表之前首先得具有CREATE权限，如果没有权限，表已经存在，没有声明引用的数据库将引发错误
转载请注明原文地址: https://ju.6miu.com/read-670579.html
