oracle中 查找所有 约束
SELECT
a.table_name, a.column_name
FROM
user_cons_columns a,
user_constraints b
WHERE
a.constraint_name = b.constraint_name AND
b.constraint_type = 'R' AND
a.column_name = 'ID'
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转载自zhouxueliang.iteye.com/blog/1395625
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