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Clarify current limitations of Hive support #1287

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12 changes: 12 additions & 0 deletions README.md
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Expand Up @@ -71,6 +71,18 @@ Usage: SQLancer [options] [command] [command options]

**Supported DBMSs.** SQLancer requires DBMS-specific code for each DBMS that it supports. As of January 2025, it provides support for Citus, ClickHouse, CnosDB, CockroachDB, Databend, (Apache) DataFusion, (Apache) Doris, DuckDB, H2, HSQLDB, MariaDB, Materialize, MySQL, OceanBase, PostgreSQL, Presto, QuestDB, SQLite3, TiDB, and YugabyteDB. The extent to which the individual DBMSs are supported [differs](https://github.com/sqlancer/sqlancer/blob/documentation-approaches/CONTRIBUTING.md).

## Hive Support

Hive support in SQLancer is currently limited.

At the moment, the Hive implementation focuses primarily on schema
generation and INSERT-based testing. SELECT-based or mixed workloads
are not fully supported yet.

As a result, depending on the configuration and environment, a run
may execute zero queries. This is expected behavior and does not
indicate a runtime failure.

# Approaches and Papers

SQLancer has pioneered and includes multiple approaches for DBMS testing, as outlined below in chronological order.
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