建立主、子表sql

--主表語句
CREATE TABLE ZDJS.crd_main_tab
(
ID_ VARCHAR2(128) NOT NULL ENABLE,
STATION_NAME_ VARCHAR2(128),
CREATE_TIME_ DATE,
CHECK (ID_ IS NOT NULL) ENABLE,
PRIMARY KEY (ID_)
) ;
COMMENT ON COLUMN ZDJS.crd_main_tab.ID_ IS 'ID';
COMMENT ON COLUMN ZDJS.crd_main_tab.STATION_NAME_ IS '所屬站名';
COMMENT ON COLUMN ZDJS.crd_main_tab.CREATE_TIME_ IS '創建時間';
COMMENT ON TABLE ZDJS.crd_main_tab IS 'crd測試主表';

--子表語句
CREATE TABLE ZDJS.crd_sub_tab
(
ID_ VARCHAR2(128) PRIMARY KEY NOT NULL ENABLE,
refid_ varchar2(128),
STATION_NAME_ VARCHAR2(128),
CREATE_TIME_ DATE,
constraint mySubRef foreign key(refid_) references ZDJS.crd_main_tab(ID_)
);
COMMENT ON COLUMN ZDJS.crd_sub_tab.ID_ IS 'ID';
COMMENT ON COLUMN ZDJS.crd_sub_tab.refid_ IS 'ID';
COMMENT ON COLUMN ZDJS.crd_sub_tab.STATION_NAME_ IS '所屬站名';
COMMENT ON COLUMN ZDJS.crd_sub_tab.CREATE_TIME_ IS '創建時間';
COMMENT ON TABLE ZDJS.crd_sub_tab IS 'crd測試子表';

--alter table ZDJS.crd_sub_tab add constraint mySubRef foreign key(refid_) referencesZDJS.crd_main_tab(ID_);
--drop table ZDJS.crd_sub_tab