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feat: support V0 iceberg_tables schema for SqlCatalog #2380

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rchowell wants to merge 2 commits intoapache:mainfrom
rchowell:iceberg-type
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feat: support V0 iceberg_tables schema for SqlCatalog #2380
rchowell wants to merge 2 commits intoapache:mainfrom
rchowell:iceberg-type

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@rchowell rchowell commented Apr 28, 2026

Which issue does this PR close?

What changes are included in this PR?

This PR adds support for using a V0 SqlCatalog from other implementations like iceberg-python or iceberg-java, and it follows the iceberg-java behavior of checking an explicit schema-version property and migrating to V1 only-if the user requested this. I also added logging at the same level as iceberg-java.

Probe to see if we have a V0 or V1 table, then add the iceberg_type column if it does not exist. More details in apache/iceberg-python#3263

Are these changes tested?

  • Unit tests with migration path

Comment thread crates/catalog/sql/src/catalog.rs Outdated
@rchowell rchowell changed the title fix: automatically migrate V0 SqlCatalog catalog tables feat: support V0 iceberg_tables schema for SqlCatalog May 1, 2026
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rchowell commented May 1, 2026

Ok @blackmwk thanks again for reviewing, I was mistaken and have fixed this PR to match iceberg-java much more closely. I also updated the PR title and description to be more accurate since this is more of a feature to support reading V0 tables in iceberg-rust. Thanks!

Comment on lines 43 to 46
pub const SQL_CATALOG_PROP_BIND_STYLE: &str = "sql_bind_style";
/// catalog schema version, setting to "V1" will migrate from V0 to V1 schema
pub const SQL_CATALOG_PROP_SCHEMA_VERSION: &str = "sql.schema-version";

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Seeing these together makes me think sql_schema_version yet iceberg-java has jdbc.schema-version. I do prefer consistency for something like sql.<kebab>.

@rchowell rchowell requested a review from blackmwk May 5, 2026 17:49
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column "iceberg_type" does not exist

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