查询一个主键表的所有外键表.sql

SELECT AA.TABLE_NAME 外键表名称, AA.COLUMN_NAME 外键列名,
BB.TABLE_NAME 主键表名称, BB.COLUMN_NAME 主键列名
FROM (SELECT A.CONSTRAINT_NAME,
B.TABLE_NAME,
B.COLUMN_NAME,
A.R_CONSTRAINT_NAME
FROM USER_CONSTRAINTS A, USER_CONS_COLUMNS B
WHERE A.CONSTRAINT_TYPE = 'R'
AND A.CONSTRAINT_NAME = B.CONSTRAINT_NAME) AA,
(SELECT DISTINCT A.R_CONSTRAINT_NAME,
B.TABLE_NAME,
B.CONSTRAINT_NAME,
B.COLUMN_NAME
FROM USER_CONSTRAINTS A, USER_CONS_COLUMNS B
WHERE A.R_CONSTRAINT_NAME = B.CONSTRAINT_NAME
AND A.CONSTRAINT_TYPE = 'R') BB
WHERE AA.R_CONSTRAINT_NAME = BB.R_CONSTRAINT_NAME

CREATE TABLE tab2 AS
SELECT DISTINCT A.R_CONSTRAINT_NAME,
B.TABLE_NAME,
B.CONSTRAINT_NAME,
B.COLUMN_NAME
FROM USER_CONSTRAINTS A, USER_CONS_COLUMNS B
WHERE A.R_CONSTRAINT_NAME = B.CONSTRAINT_NAME
AND A.CONSTRAINT_TYPE = 'R'