命令

show create table game;

game是表名 

在web管理中,请在sql标签中查,不要在query中执行.

show create table game;=== <Result of SELECT Command in Line 1> ===  TABLE                 CREATE TABLE        ============================================  'game'                'CREATE TABLE game (host_year INTEGER NOT NULL, event_code INTEGER NOT NULL, athlete_code INTEGER NOT NULL, stadium_code INTEGER NOT NULL, nation_code CHARACTER(3), medal CHARACTER(1), game_date DATE,  CONSTRAINT pk_game_host_year_event_code_athlete_code PRIMARY KEY  (host_year, event_code, athlete_code),  CONSTRAINT fk_game_event_code FOREIGN KEY  (event_code) REFERENCES event ON DELETE RESTRICT ON UPDATE RESTRICT,  CONSTRAINT fk_game_athlete_code FOREIGN KEY  (athlete_code) REFERENCES athlete ON DELETE RESTRICT ON UPDATE RESTRICT)'1 row selected.Current transaction has been committed.1 command(s) successfully processed.

 可以看到外键信息如

CONSTRAINT fk_game_event_code FOREIGN KEY  (event_code) REFERENCES event ON DELETE RESTRICT ON UPDATE RESTRICT,  


可以看到主键信息

CONSTRAINT pk_game_host_year_event_code_athlete_code PRIMARY KEY  (host_year, event_code, athlete_code),  

换个体位看索引 ,利用主键

SELECT * FROM db_index WHERE class_name = 'game' AND is_primary_key = 'YES';