v1.2.1

[1.2.1] - 2026-09-22

Highlights

• Support for SAP HANA and Exasol

Added

• datacontract test:
  • supports SAP HANA Cloud and SAP Datasphere through the optional hana extra (#1332 @ToniLippmann)
  • supports Exasol through the exasol extra (#1335)
  • on Databricks and Spark checks nested array and struct properties (#1278 @rob-h-w)
• datacontract export excel and datacontract import excel support all versions of the Excel template (ODCS v3.0.2, v3.1.0, v3.2.0)
• datacontract import sql detects table-level PRIMARY KEY and FOREIGN KEY constraints, derives unique: true for single-column keys, and emits property-level relationships in the ODCS shorthand format (#1618 @dmaresma)
• datacontract export great-expectations --checks restricts the suite to quality and/or properties expectations (#1617 @julienguilhempartner-spec)
• datacontract import warns once per import about column types that have no mapping to a logicalType (#1629 @regdat)

Changed

• datacontract lint validates against the ODCS schema for the apiVersion the contract declares, instead of always the newest one
• datacontract-cli[csv] installs DuckDB, which datacontract import csv needs, instead of pandas
• Internal logging uses named module loggers instead of the root logger (#1605 @sondrfos)

Security

• datacontract test and datacontract import sqlserver escape the host, database and driver in the SQL Server connection string, so a ; in the contract's servers block can no longer inject connection keywords
• datacontract api:
  • resolves authoritativeDefinitions only against the Entropy Data host configured on the server, without following redirects, and answers a failed lookup on every endpoint with 422 and the URL, never with what the host answered
  • answers a non-ASCII x-api-key with 403 instead of 500 and warns on failed API key checks
  • /test no longer logs the submitted contract
• datacontract changelog and datacontract breaking no longer interpret contract values as terminal markup

Fixed

• datacontract test:
  • --filter reports a duplicate key whose other occurrence lies outside the filtered rows (#1593,#1619 @gkhnelbstn)
  • no longer counts NULL values as duplicates of each other in uniqueness checks
  • SQL Server / Microsoft Fabric cli auth works again on macOS/Linux, and ActiveDirectoryInteractive fails fast off Windows instead of timing out (#1603 @johannzv)
  • reports a freshness service level it cannot interpret as a single failed check instead of aborting the whole run; freshness now also accepts an ISO-8601 duration as its value, like retention
• datacontract import:
  • maps timestamp, time, decimal, JSON-like and small integer column types that previously came out as string or date to the right logicalType, including in avro and spark imports (#1629 @regdat)
  • s3, gcs and adls accept --format again, so Delta tables can be imported (#1628 @regdat)
  • sql warns about statements it cannot parse and therefore skips, such as a CREATE TABLE with unquoted hyphens in its name (#686 @dwelden)
• datacontract dbt sync writes the generated-column marker under config.meta instead of a top-level meta so the model YAML parses under dbt Fusion; files written by an earlier version are migrated on the next sync (#1633 @FredrikBakken)
• datacontract dbt sync removes a column it generated once the property leaves the contract, without --prune; a column the user added their own tests or settings to is kept
• datacontract changelog and datacontract breaking:
  • report changes in list items that have no name, url or id, such as unnamed quality rules
  • report a renamed schema correctly
  • breaking recognizes changes to quality rules