Issues

• [Improving][Oracle, SQL Server][Source] Foreign key on NUMERIC columns rejected by Spanner, UNIQUE constraint dropped, neither reported (Dialects: PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1466 · Filter by author NicolasRicheYopp opened on Oct 30, 2026

• [Improving][Oracle, SQL Server][Source] Synthetic primary key column is created as a string where the documentation says INT64 (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1465 · Filter by author NicolasRicheYopp opened on Oct 30, 2026

• [Improving][Oracle][Source] Foreign key rejected by Spanner, INT64 child and NUMERIC parent, for NUMBER(18) referencing NUMBER(19) (Dialects: GoogleSQL)

  GoogleCloudPlatform/spanner-migration-tool#1464 · Filter by author NicolasRicheYopp opened on Oct 30, 2026

• [Improving][Oracle][Source] Nested-table internals migrated and schema rejected for NESTED TABLE column (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1463 · Filter by author NicolasRicheYopp opened on Oct 30, 2026

• [Improving][Oracle][Source] Internal overflow segment table migrated as a user table for index-organized table with OVERFLOW (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1462 · Filter by author NicolasRicheYopp opened on Oct 30, 2026

• [Improving][Oracle][Source] UNIQUE constraint on a nullable column loses the multiple-NULLs semantics (Dialects: GoogleSQL)

  GoogleCloudPlatform/spanner-migration-tool#1461 · Filter by author NicolasRicheYopp opened on Oct 30, 2026

• [Improving][Oracle][Source] CHECK constraints dropped because column names in the expression are not rewritten (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1456 · Filter by author NicolasRicheYopp opened on Oct 26, 2026

• [Improving][Oracle][Source] Panic (nil pointer dereference) for IDENTITY column (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1455 · Filter by author NicolasRicheYopp opened on Oct 26, 2026

• [Improving][Oracle][Source] Virtual column loses its generation expression (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1454 · Filter by author NicolasRicheYopp opened on Oct 26, 2026

• [Oracle] Column DEFAULT values silently dropped (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1450 · Filter by author NicolasRicheYopp opened on Oct 22, 2026

• [Oracle] Hidden columns of function-based indexes and SET UNUSED columns migrated as real columns (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1449 · Filter by author NicolasRicheYopp opened on Oct 22, 2026

• [Oracle] User CHECK constraint containing "IS NOT NULL" silently dropped (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1448 · Filter by author NicolasRicheYopp opened on Oct 22, 2026

• [Oracle] Function-based index dropped without a report, or emitted with no key columns and rejected (Dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1447 · Filter by author NicolasRicheYopp opened on Oct 21, 2026

• [Oracle] UNIQUE constraint on a NUMBER column dropped without a report (Dialects: PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1446 · Filter by author NicolasRicheYopp opened on Oct 21, 2026

• [Oracle] INTERVAL columns silently mapped to STRING with no warning (GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1445 · Filter by author NicolasRicheYopp opened on Oct 21, 2026

• [Oracle] TIMESTAMP (no time zone) becomes Spanner TIMESTAMP with no time zone warning (GoogleSQL)

  GoogleCloudPlatform/spanner-migration-tool#1444 · Filter by author NicolasRicheYopp opened on Oct 21, 2026

• [Oracle] LONG RAW (up to 2 GB) mapped to BYTES(MAX) / bytea without a possible-overflow warning (GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1443 · Filter by author NicolasRicheYopp opened on Oct 21, 2026

• [Oracle] Connection fails with ORA-01017 when the password contains a space

  GoogleCloudPlatform/spanner-migration-tool#1442 · Filter by author NicolasRicheYopp opened on Oct 21, 2026

• [Oracle] Composite foreign key generated with duplicated, cross-paired columns and rejected by Spanner (Both dialects: GoogleSQL, PostgreSQL)

  GoogleCloudPlatform/spanner-migration-tool#1439 · Filter by author NicolasRicheYopp opened on Oct 20, 2026

• [Question/Decision] Oracle: CHAR and NCHAR blank-padding behavior is lost without a schema warning about side effects

  GoogleCloudPlatform/spanner-migration-tool#1436 · Filter by author NicolasRicheYopp opened on Oct 16, 2026

• [Bug] schema exits 0 and writes no file when the --prefix directory does not exist

  GoogleCloudPlatform/spanner-migration-tool#1435 · Filter by author NicolasRicheYopp opened on Oct 15, 2026

• [Bug] Oracle: RAW(n) loses its byte-length bound without a schema warning

  GoogleCloudPlatform/spanner-migration-tool#1434 · Filter by author NicolasRicheYopp opened on Oct 15, 2026

• [Bug] Source Oracle, PostgreSQL dialect: a NUMBER foreign key column stays NUMERIC, so Spanner rejects the foreign key

  GoogleCloudPlatform/spanner-migration-tool#1430 · Filter by author NicolasRicheYopp opened on Oct 13, 2026

• [Bug] Oracle: The index backing a PRIMARY KEY is migrated as a redundant secondary unique index in Spanner

  GoogleCloudPlatform/spanner-migration-tool#1413 · Filter by author NicolasRicheYopp opened on Oct 1, 2026

• Installation instructions for 'apt install' out-of-date

  GoogleCloudPlatform/spanner-migration-tool#1407 · Filter by author NicolasRicheYopp opened on Sep 29, 2026