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-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.