Open Source Release
47 lines
2.8 KiB
SQL
47 lines
2.8 KiB
SQL
-- +goose Up
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-- A purchase order to a supplier — deliberately thin lifecycle (draft ->
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-- ordered -> partially_received/received, or cancelled from draft/ordered/
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-- partially_received). Line items are fixed once the PO leaves draft (no
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-- partial line edits after that — cancel and recreate for a real mistake);
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-- draft itself is fully replaceable (see internal/purchaseorder.Update).
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CREATE TABLE purchase_orders (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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supplier_id UUID NOT NULL REFERENCES suppliers(id) ON DELETE RESTRICT,
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status TEXT NOT NULL DEFAULT 'draft' CHECK (status IN
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('draft', 'ordered', 'partially_received', 'received', 'cancelled')),
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note TEXT,
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created_by_staff_id UUID NOT NULL,
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created_by_staff_name TEXT NOT NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
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);
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CREATE INDEX purchase_orders_supplier_id_idx ON purchase_orders (supplier_id);
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CREATE INDEX purchase_orders_status_idx ON purchase_orders (status);
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-- qty_received is a running total updated transactionally by each GRN
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-- receive (internal/purchaseorder.Receive) — not derived from stock_batches
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-- on read, since a PO line's fulfillment needs to be checked/updated
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-- atomically against concurrent receives on other lines of the same PO.
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-- No CHECK tying qty_received to qty_ordered — a supplier over-shipping a
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-- line is a real occurrence this shouldn't hard-block.
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CREATE TABLE purchase_order_items (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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purchase_order_id UUID NOT NULL REFERENCES purchase_orders(id) ON DELETE CASCADE,
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part_id UUID NOT NULL REFERENCES parts(id) ON DELETE RESTRICT,
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qty_ordered INT NOT NULL CHECK (qty_ordered > 0),
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qty_received INT NOT NULL DEFAULT 0 CHECK (qty_received >= 0),
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unit_price NUMERIC(10, 2) NOT NULL CHECK (unit_price >= 0)
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);
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CREATE INDEX purchase_order_items_po_id_idx ON purchase_order_items (purchase_order_id);
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-- GRN linkage — receiving against a PO reuses internal/inventory's existing
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-- ReceiveBatch (the same stock_batches/stock_serials/stock_movements
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-- machinery a manual receipt uses), just additionally tagged with which
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-- PO/line it fulfills. A GRN is not a separate table: the set of
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-- stock_batches rows carrying a given purchase_order_id *is* its goods
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-- receipt history.
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ALTER TABLE stock_batches ADD COLUMN purchase_order_id UUID REFERENCES purchase_orders(id) ON DELETE SET NULL;
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ALTER TABLE stock_batches ADD COLUMN purchase_order_item_id UUID REFERENCES purchase_order_items(id) ON DELETE SET NULL;
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CREATE INDEX stock_batches_purchase_order_id_idx ON stock_batches (purchase_order_id) WHERE purchase_order_id IS NOT NULL;
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