document types

backend/migrations/202510300001_rename_document_uploaded_at/down.sql

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+ALTER TABLE documents
+    RENAME COLUMN created_at TO uploaded_at;

backend/migrations/202510300001_rename_document_uploaded_at/up.sql

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+ALTER TABLE documents
+    RENAME COLUMN uploaded_at TO created_at;

backend/migrations/202510300002_add_document_types/down.sql

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+DROP INDEX IF EXISTS documents_document_type_idx;
+
+ALTER TABLE documents
+    DROP COLUMN IF EXISTS document_type_id;
+
+DROP TABLE IF EXISTS document_types;

backend/migrations/202510300002_add_document_types/up.sql

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+CREATE TABLE document_types (
+    id UUID PRIMARY KEY,
+    tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+    name VARCHAR(100) NOT NULL,
+    CONSTRAINT document_types_unique_name UNIQUE (tenant_id, name)
+);
+
+ALTER TABLE documents
+    ADD COLUMN document_type_id UUID REFERENCES document_types(id) ON DELETE SET NULL;
+
+CREATE INDEX documents_document_type_idx ON documents(document_type_id);