Support multi-column foreign keys in SQL#1494

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jgaleotti wants to merge 20 commits intomasterfrom

sql-multi-column-foreign-keys

Commits on Apr 1, 2026

Add end-to-end tests for composite primary key support in Postgres integration
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Add end-to-end tests for multi-column foreign key support in Postgres integration
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Commits on Apr 3, 2026

bugfix: Unique constraint evaluation correctly handles the presene of `NULL` values. In SQL, As `NULL` values are considered unknown (`NULL=NULL` evaluates to false),
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Refactor SQL foreign key handling to store target columns.
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Add test for multi-column foreign key gene creation
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Add test for implicit composite foreign keys and for multiple foreign keys in the same table.
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removed deprecated constructor
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`isValidForeignKeys` checks for constraints accross multiple columns
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Merge remote-tracking branch 'origin/master' into sql-multi-column-foreign-keys
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Commits on Apr 5, 2026

Commits on Apr 6, 2026

Add support for CASCADE in TRUNCATE for PostgreSQL / handling of multi-column foreign keys
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Commits on Apr 7, 2026

isValidForeignKeys() consider the case where a foreign key column is nullable
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Commits on Apr 9, 2026

Merge remote-tracking branch 'origin/master' into sql-multi-column-foreign-keys
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