PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '' for key 2: INSERT INTO {file_managed} [#1163740] | Drupal.org
KB39021: "Violation of PRIMARY KEY constraint PK_ADDRESS. Cannot insert duplicate key in object dbo.DSSCSADDRESS. The duplicate key value is (<ID>)" error occurs when trying to duplicate a project across Project Sources in
Solved: sql violation of unique key constraint - Esri Community
Solved: sql violation of unique key constraint - Esri Community
Bug] [sql] duplicate key value violates unique constraint "t_ds_error_command_pkey" in v2.0.1 · Issue #7504 · apache/dolphinscheduler · GitHub
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postgresql - Unique constraint violation for unique index on LOWER(col) - Stack Overflow