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feat: Add PostgreSQL multi-backend support (DataJoint 2.1)#1338

Merged

dimitri-yatsenko merged 51 commits intopre/v2.1from

feat/database-adapters

Jan 19, 2026

Commits on Jan 17, 2026

feat: Add database adapter interface for multi-backend support (Phase 2)

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feat: Add backend configuration to DatabaseSettings

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feat: Add get_cursor() method to database adapters

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feat: Integrate database adapters into Connection class

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feat: Use database adapters for SQL generation in table.py (Phase 5)
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feat: Add json_path_expr() method to database adapters (Phase 6 Part 1)
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feat: Use adapter for WHERE clause generation (Phase 6 Part 2)

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feat: Use adapter for query expression SQL (Phase 6 Part 3)

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feat: Add DDL generation adapter methods (Phase 7 Part 1)

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feat: Thread adapter through declare.py for backend-agnostic DDL (Phase 7 Part 2)
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feat: Add multi-backend testing infrastructure (Phase 1)
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docs: Add comprehensive multi-backend testing design
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fix: Set autocommit=True by default in database adapters
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fix: Replace hardcoded MySQL syntax with adapter methods
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fix: Make heading.py backend-agnostic for column and index queries
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feat: Add backend-agnostic upsert and complete heading.py fixes
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fix: Complete foreign key and primary key support for PostgreSQL
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fix: Use table instances instead of classes in len() calls
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fix: Use backend-agnostic COUNT DISTINCT for multi-column primary keys
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feat: Add backend-agnostic cascade delete support
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Commits on Jan 18, 2026

Commits on Jan 19, 2026