13 lines
553 B
Markdown
13 lines
553 B
Markdown
# Architecture Decisions
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## Required columns on newly created tables
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**Decision.** The `NOT_NULL` SQL check accepts `ALTER TABLE ... ADD COLUMN ... NOT NULL`
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only when the same migration unconditionally created that exact table. `CREATE TABLE IF
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NOT EXISTS` does not prove an empty table. The migration remains
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fully linted, so `RunSQL`, `RunPython`, and operations on existing tables retain their
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checks.
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**Rejected.** Ignoring all initial migrations or naming them as exemptions. Either option
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skips unsafe operations that the linter must inspect.
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