Oracle数据库中,知道一张表,查询与其有主外键关系的表

时间:2022-04-17 00:41:36
          --查外键表NC56.CSCI有无对应的主键表
SELECT a.owner,
A.TABLE_NAME primary_table_name,
A.CONSTRAINT_NAME primary_table_key_name,
b.owner,
B.TABLE_NAME foreign_table_name,
B.CONSTRAINT_NAME foreign_table_foreign_key_name,
B.STATUS foreign_table_foreign_key_stat
FROM DBA_CONSTRAINTS A, DBA_CONSTRAINTS B
WHERE A.CONSTRAINT_NAME = B.R_CONSTRAINT_NAME
and B.CONSTRAINT_TYPE = 'R'
AND b.TABLE_NAME = 'CSCI' and a.owner='NC56' and b.owner='NC56'
ORDER BY 1, 2, 3, 4;
           --查主键表NC56.CBH有无对应的外键表           SELECT a.owner,                 A.TABLE_NAME      primary_table_name,                  A.CONSTRAINT_NAME primary_table_key_name,                  b.owner,                  B.TABLE_NAME      foreign_table,                  B.CONSTRAINT_NAME foreign_table_foreign_key_name,                  B.STATUS          foreign_table_foreign_key_stat             FROM DBA_CONSTRAINTS A, DBA_CONSTRAINTS B            WHERE A.CONSTRAINT_NAME = B.R_CONSTRAINT_NAME              and B.CONSTRAINT_TYPE = 'R'              AND a.TABLE_NAME = 'CBH' and a.owner='NC56' and  b.owner='NC56'            ORDER BY 1, 2, 3, 4;