PostgreSQL reference SQL execution plugin for ETLantic.
Project description
etlantic-sql
PostgreSQL reference SQL execution plugin for ETLantic.
pip install etlantic-sql
# or: pip install 'etlantic[sql]'
export ETLANTIC_SQL_URL=postgresql+psycopg://user:pass@localhost:5432/etlantic
# SQLite is fine for demos only:
# export ETLANTIC_SQL_URL=sqlite+pysqlite:///:memory:
Uses SQLAlchemy Core. Driver dependencies stay out of etlantic core.
Wiring
from etlantic import Profile
Profile(name="sql-prod", sql_engine="sql")
Register @Transformation.implementation("sql") handlers that take
RelationRef inputs and return SQL query handles (not fetched rows).
Capabilities (0.6)
- SQL→SQL fusion without intermediate Python row fetch
- Durable run-scoped staging tables (not session TEMP)
- Insert-select / CTAS-style publication
- Fail-closed planning when required capabilities are missing
Not included: MERGE / upsert (sql_merge=False). Requiring merge fails
at planning.
Examples
python examples/sql_to_sql.py
python examples/sql_boundary_hybrid.py
python examples/sql_transactional_write.py
python examples/sql_failure_recovery.py
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