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Paul Delannoy
0b950f9824
- Update migration agent guidelines to prioritize extension tool usage for code migration. - Refine migration phases with detailed steps for pre-migration review and schema migration. - Add new reviewing skill references for PostgreSQL materialized view refresh and UNION ALL planner risks. - Ensure consistency in collation handling and testing strategies across skills. Co-authored-by: TCPrimedPaul <paul.delannoy@tc.gc.ca>
2.3 KiB
2.3 KiB
Reference Index
| File | Brief description |
|---|---|
| empty-strings-handling.md | Oracle treats '' as NULL; PostgreSQL keeps empty strings distinct—patterns to align behavior in code, tests, and migrations. |
| no-data-found-exceptions.md | Oracle SELECT INTO raises "no data found"; PostgreSQL doesn’t—add explicit NOT FOUND handling to mirror Oracle behavior. |
| oracle-parentheses-from-clause.md | Oracle allows FROM(TABLE_NAME) syntax; PostgreSQL requires FROM TABLE_NAME—remove unnecessary parentheses around table names. |
| oracle-to-postgres-sorting.md | How to preserve Oracle-like ordering in PostgreSQL using COLLATE "C" and DISTINCT wrapper patterns. |
| oracle-to-postgres-to-char-numeric.md | Oracle allows TO_CHAR(numeric) without format; PostgreSQL requires format string—use CAST(numeric AS TEXT) instead. |
| oracle-to-postgres-type-coercion.md | PostgreSQL strict type checks vs. Oracle implicit coercion—fix comparison errors by quoting or casting literals. |
| postgres-union-all-planner.md | UNION ALL branches can produce poor plans when predicate pushdown is limited—review plans and split or reshape queries when needed. |
| postgres-materialized-view-refresh.md | Materialized views are not auto-refreshed after base-table changes—application or jobs must explicitly refresh them. |
| postgres-concurrent-transactions.md | PostgreSQL allows only one active command per connection—materialize results or use separate connections to avoid concurrent operation errors. |
| postgres-refcursor-handling.md | Differences in refcursor handling; PostgreSQL requires fetching by cursor name—C# patterns to unwrap and read results. |
| oracle-to-postgres-timestamp-timezone.md | CURRENT_TIMESTAMP / NOW() return UTC-normalised timestamptz in PostgreSQL; Npgsql surfaces DateTime.Kind=Unspecified—force UTC at connection open and in application code. |