CREATE TABLE 共享子句

共享语句尾部

以下子句在 CREATE TABLE 与 CREATE TABLE PARTITION 的语法中功能与写法相同：

sql

[ON COMMIT {DELETE|PRESERVE} ROWS]
[physical_properties_clause]
[table_attr_clause]
[CRMODE PAGE]

子句展开

column_def_clause:

    column_name {datatype | SERIAL}
    [DEFAULT expr [ON UPDATE expr]]
    [AUTO_INCREMENT]
    [COMMENT 'comment_str']
    [COLLATE collation_name]
    [col_level_constraint][...]

col_level_constraint:

    CONSTRAINT constraint_name {[NOT] NULL
                                | UNIQUE
                                | PRIMARY KEY
                                | CHECK(expr)
                                | refenence_clause }[...]

refenence_clause:

    REFERENCES [schema_name.]table_name[(column_name)] [ON DELETE {CASCADE | SET NULL}]

external_constraint:

    CONSTRAINT constraint_name {UNIQUE(column_name[,...]) [using_index_clause]
                                | PRIMARY KEY(column_name[,...]) [using_index_clause]
                                | CHECK(expr)
                                | FOREIGN KEY(column_name[,...]) refenence_extend_clause}

using_index_clause:

    USING INDEX [ INITRANS int
                | PCTFREE int
                | TABLESPACE tablespace_name
                | LOCAL
              ]

refenence_extend_clause:

    REFERENCES [schema_name.]table_name[(column_name[,...])] [ON DELETE {CASCADE | SET NULL}]

physical_properties_clause:

    segment_attr_clause
    | ORGANIZATION EXTERNAL external_table_clause
    | FORMAT ({ASF|CSF})

segment_attr_clause:

    { physical_attr_clause | TABLESPACE tablespace_name}[ ...]

physical_attr_clause:

    {
        PCTFREE int
        | INITRANS int
        | MAXTRANS int
        | storage_clause
    }[ ...]

storage_clause:

    STORAGE ({INITIAL int [K|M|G|T] | MAXSIZE {UNLIMITED | int [K|M|G|T]}}[ ...])

external_table_clause:

    ([TYPE LOADER] external_data_properties)

external_data_properties:

    DIRECTORY directory_name
    [ACCESS PARAMETERS (opaque_format_spec)]
    LOCATION location_name

opaque_format_spec:

    RECORDS DELIMITED BY records_delimiter FIELDS TERMINATED BY fields_term

table_attr_clause:

    [column_attr_clause]
    [AUTO_INCREMENT [=] value]
    [AS subquery]

column_attr_clause:

    [LOB (LOB_item) STORE AS {[(LOB_parameters)]}]
    [APPENDONLY {ON|OFF}]

LOB_parameters:

    [TABLESPACE tablespace_name | {ENABLE | DISABLE} STORAGE IN ROW][ ...]

CREATE TABLE 共享子句 ​

共享语句尾部 ​

子句展开 ​

CREATE TABLE 共享子句

共享语句尾部

子句展开