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select * from user_constraints c where c.constraint_type = 'R' and c.table_name = Òª²éѯµÄ±í
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select t.*,c.COMMENTS from user_tab_columns t,user_col_comments c where t.table_name = c.table_name and t.column_name = c.column_name and t.table_name = Òª²éѯµÄ±í


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