etlantic-sql
SQLite and PostgreSQL reference SQL execution plugin for ETLantic 0.34.
Note: PyPI Production/Stable classifiers describe this plugin package’s release channel. Core ETLantic 0.34 remains Beta for documented single-tenant pilots — classifiers are not an enterprise SLA.
Install
pip install etlantic-sql
export ETLANTIC_SQL_URL=postgresql+psycopg://user:pass@localhost:5432/etlantic
# Or use SQLite:
# 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")
The etlantic.sql_plugins entry point named sql registers
etlantic_sql:create_plugin. Profiles select it with sql_engine="sql";
keep connection URLs in environment-backed configuration or secret providers,
not in plans.
Register @Transformation.implementation("sql") handlers that take
RelationRef inputs and return SQL query handles (not fetched rows).
Capabilities
- 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
SQLite and PostgreSQL are Tier A in 0.33. MERGE / upsert is advertised only
for PostgreSQL (sql_merge=True, INSERT … ON CONFLICT); SQLite remains
sql_merge=False and fails closed when merge is required.
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
Links
SQL tutorial · SQL hello · Source · Issues
1 maintainer
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