https://www.oraclescripts.com/tags/foreign-key/Recent content in Foreign Key on Oracle ScriptsHugo -- gohugo.ioenOracleScripts.comSun, 01 Sep 2024 00:00:00 +0000https://www.oraclescripts.com/post/show-all-table-constraints-for-a-user-in-a-oracle-database/Sun, 01 Sep 2024 00:00:00 +0000https://www.oraclescripts.com/post/show-all-table-constraints-for-a-user-in-a-oracle-database/ <h2 id="oracle-database-show-all-table-constraints-for-a-user-using-dba_constraints">Oracle Database: Show All Table Constraints for a User using dba_constraints</h2> <h2 id="purpose">Purpose</h2> <p>This Oracle SQL query is designed to retrieve a comprehensive list of all constraints associated with tables owned by a specific user in your Oracle database. Constraints are essential rules that ensure data integrity and consistency. This query offers a clear and organized view of these constraints, aiding in database management and troubleshooting.</p> <p>Constraint metadata lives in three overlapping dictionary views, and knowing which one to reach for matters before the query even runs. <code>USER_CONSTRAINTS</code> shows only the constraints owned by the connected schema. <code>ALL_CONSTRAINTS</code> adds every constraint the connected account has been granted visibility on, whether it owns the table or not. <code>DBA_CONSTRAINTS</code> returns every constraint in the entire database regardless of owner, but only to an account holding a privilege such as <code>SELECT_CATALOG_ROLE</code> or <code>SELECT ANY DICTIONARY</code>. A developer working inside their own schema reaches for <code>USER_CONSTRAINTS</code>. A DBA auditing a specific application account, comparing constraint coverage across two schemas before a migration, or reviewing a third-party schema before granting it production access needs the wider <code>DBA_CONSTRAINTS</code> view with an explicit <code>OWNER</code> filter — which is exactly what the query below does.</p>