云数据库 GAUSSDB-CREATE TABLE:语法格式

时间:2024-01-23 20:08:40

语法格式

  • 创建表。
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    CREATE [ [ GLOBAL | LOCAL ] [ TEMPORARY | TEMP ] | UN LOG GED ] TABLE [ IF NOT EXISTS ] table_name 
        ({ column_name data_type [ compress_mode ] [ COLLATE collation ] [ column_constraint [ ... ] ]
            | table_constraint
            | LIKE source_table [ like_option [...] ] }
            [, ... ])
        [ WITH ( {storage_parameter = value} [, ... ] ) ]
        [ ON COMMIT { PRESERVE ROWS | DELETE ROWS } ]
        [ COMPRESS | NOCOMPRESS ]
        [ TABLESPACE tablespace_name ]
        
        [ DISTRIBUTE BY { REPLICATION | HASH ( column_name [, ...] ) 
        | RANGE ( column_name [, ...] ) { SLICE REFEREN CES  tablename | ( slice_less_than_item [, ...] )
        | ( slice_start_end_item [, ...] ) }
        | LIST ( column_name [, ...] ) { SLICE REFERENCES tablename | ( slice_values_item [, ...] ) }
        } ]
        [ TO { GROUP groupname | NODE ( nodename [, ... ] ) } ];
    
    • 其中列约束column_constraint为:
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      [ CONSTRAINT constraint_name ]
      { NOT NULL |
        NULL |
        CHECK ( expression ) | 
        DEFAULT default_expr |
        UNIQUE [ index_parameters ] |
        PRIMARY KEY [ index_parameters ] |
        ENCRYPTED WITH ( COLUMN_ENCRYPTION_KEY = column_encryption_key, ENCRYPTION_TYPE = encryption_type_value)}
      [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
      
    • 其中列的压缩可选项compress_mode为:
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      { DELTA | PREFIX | DICTIONARY | NUMSTR | NOCOMPRESS }
      
    • 其中表约束table_constraint为:
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      [ CONSTRAINT constraint_name ]
      { CHECK ( expression ) |
        UNIQUE ( column_name [, ... ] ) [ index_parameters ] |
        PRIMARY KEY ( column_name [, ... ] ) [ index_parameters ] |
        PARTIAL CLUSTER KEY ( column_name [, ... ] ) }
      [ DEFERRABLE | NOT DEFERRABLE ][ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
      
    • 其中like选项like_option为:
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      { INCLUDING | EXCLUDING } { DEFAULTS | CONSTRAINTS | INDEXES | STORAGE | COMMENTS | PARTITION | RELOPTIONS | DISTRIBUTION | ALL }
      
    • 其中RANGE分布规则

      slice_less_than_item为:

      SLICE slice_name VALUES LESS THAN ({ literal | MAXVALUE } [, ...]) [ DATANODE dn_name ]

      slice_start_end_item为:

      SLICE slice_name_prefix {

      { START ( literal ) END ( literal ) EVERY ( literal ) } |

      { START ( literal ) END ( { literal | MAXVALUE } ) } |

      { START ( literal ) } |

      { END ( { literal | MAXVALUE } ) }

      }

    • 其中LIST分布规则slice_values_item为:

      SLICE slice_name VALUES (list_values_item) [DATANODE dn_name]

      list_values_item为:

      { DEFAULT | { partition_values_list [, ...] } }

      partition_values_list为:

      { (literal [, ...]) }

其中索引参数index_parameters为:
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[ WITH ( {storage_parameter = value} [, ... ] ) ]
[ USING INDEX TABLESPACE tablespace_name ]
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