fix(sales-orders): pin the sales_order_items embed FK and teach the embed guard composite keys (#2207)
* fix(sales-orders): pin the sales_order_items embed FK and teach the embed guard composite keys Migration 20260902180000_sales_orders_hardening added a composite (sales_order_id, company_id) foreign key from sales_order_items to sales_orders next to the original single-column one. PostgREST then saw two relationships and answered every `items:sales_order_items(*)` embed with HTTP 300 / PGRST201, so kundorder list, detail, create and the MCP list tool all failed on prod and staging with "Oväntat serverfel". - Hint the three embeds with `!sales_order_items_sales_order_id_fkey` (route, load service, MCP list tool). - scripts/checks/ambiguous-embed.mjs only parsed single-column `FOREIGN KEY (col)`, which is why the ratchet reported 0 for this pair. It now reads composite column lists (named or default constraint name) in both CREATE TABLE and ALTER TABLE, derives the same 17 ambiguous pairs prod's pg_constraint reports, and flags all three shipped sites on main. - Unit tests for the composite shapes: alongside a single-column key, replacing one, and inline in CREATE TABLE. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Q7xJQL2aZo6iRHxCZNntUq * fix(checks): drop composite embed edges when DROP COLUMN removes a member column Postgres drops every foreign key a column takes part in, so the ambiguous-embed parser must release a composite edge (and its constraint name) when one of its columns is dropped, not only the single-column key. Otherwise a later migration would keep a pair armed for a relationship that no longer exists and reject valid embeds. Regression case added. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Q7xJQL2aZo6iRHxCZNntUq --------- Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
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Claude Fable 5.1
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@@ -47,7 +47,12 @@
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* where c.contype = 'f'
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* group by 1, 2 having count(*) > 1 order by 1, 2;
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*
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* On 2026-09-01 that returned the same 15 pairs the parser derives.
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* On 2026-09-03 that returned the same 17 pairs the parser derives. Composite
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* foreign keys count: until 2026-09-03 the parser only read single-column
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* `FOREIGN KEY (col)`, so the composite (sales_order_id, company_id) guard in
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* 20260902180000_sales_orders_hardening.sql was invisible to it and the
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* un-hinted `items:sales_order_items(*)` embeds shipped, taking every
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* kundorder list and detail load down with PGRST201 (fixed 2026-09-03).
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*
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* No baseline: the count is 0, any new un-hinted ambiguous embed is a hard
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* failure.
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@@ -92,10 +97,16 @@ export function deriveForeignKeys(migrationsDir) {
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// Unnamed foreign keys get Postgres's default `<table>_<column>_fkey`.
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const byConstraint = new Map()
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// `column` is one column or a composite list ("sales_order_id, company_id").
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// A composite foreign key is its own edge, distinct from a single-column one
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// on its leading column: PostgREST counts both, which is what made
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// sales_order_items -> sales_orders ambiguous (migration 20260902180000)
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// while this parser, then single-column only, still derived one edge.
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const addEdge = (table, column, target, constraintName) => {
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const key = `${table}.${column}`
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const columns = column.split(',').map((c) => normIdent(c.trim())).filter(Boolean)
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const key = `${table}.${columns.join(',')}`
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edges.set(key, target)
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byConstraint.set(constraintName ?? `${table}_${column}_fkey`, key)
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byConstraint.set(constraintName ?? `${table}_${columns.join('_')}_fkey`, key)
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}
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let files
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@@ -121,11 +132,12 @@ export function deriveForeignKeys(migrationsDir) {
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for (const m of stmt.matchAll(/(?:^|,)\s*([\w"]+)\s+[^,()]*?references\s+([\w".]+)/gis)) {
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addEdge(table, normIdent(m[1]), normIdent(m[2]))
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}
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// `foreign key (col) references public.other(id)` as a table constraint.
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// `foreign key (col[, col]) references public.other(id[, id])` as a
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// table constraint, named or not.
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for (const m of stmt.matchAll(
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/foreign\s+key\s*\(\s*([\w"]+)\s*\)\s*references\s+([\w".]+)/gi,
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/(?:constraint\s+([\w"]+)\s+)?foreign\s+key\s*\(\s*([\w",\s]+?)\s*\)\s*references\s+([\w".]+)/gi,
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)) {
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addEdge(table, normIdent(m[1]), normIdent(m[2]))
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addEdge(table, m[2], normIdent(m[3]), m[1] && normIdent(m[1]))
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}
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continue
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}
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@@ -133,9 +145,9 @@ export function deriveForeignKeys(migrationsDir) {
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if (altered) {
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const table = normIdent(altered[1])
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for (const m of stmt.matchAll(
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/(?:add\s+constraint\s+([\w"]+)\s+)?foreign\s+key\s*\(\s*([\w"]+)\s*\)\s*references\s+([\w".]+)/gi,
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/(?:add\s+constraint\s+([\w"]+)\s+)?foreign\s+key\s*\(\s*([\w",\s]+?)\s*\)\s*references\s+([\w".]+)/gi,
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)) {
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addEdge(table, normIdent(m[2]), normIdent(m[3]), m[1] && normIdent(m[1]))
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addEdge(table, m[2], normIdent(m[3]), m[1] && normIdent(m[1]))
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}
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for (const m of stmt.matchAll(
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/add\s+column\s+(?:if\s+not\s+exists\s+)?([\w"]+)\s+[^,;]*?references\s+([\w".]+)/gi,
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@@ -143,7 +155,17 @@ export function deriveForeignKeys(migrationsDir) {
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addEdge(table, normIdent(m[1]), normIdent(m[2]))
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}
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for (const m of stmt.matchAll(/drop\s+column\s+(?:if\s+exists\s+)?([\w"]+)/gi)) {
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edges.delete(`${table}.${normIdent(m[1])}`)
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// Postgres drops every foreign key the column takes part in, so a
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// composite edge listing it goes too, not only the single-column key.
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const column = normIdent(m[1])
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for (const key of [...edges.keys()]) {
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if (!key.startsWith(`${table}.`)) continue
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if (!key.slice(table.length + 1).split(',').includes(column)) continue
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edges.delete(key)
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for (const [name, edge] of [...byConstraint]) {
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if (edge === key) byConstraint.delete(name)
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}
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}
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}
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for (const m of stmt.matchAll(/drop\s+constraint\s+(?:if\s+exists\s+)?([\w"]+)/gi)) {
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const edge = byConstraint.get(normIdent(m[1]))
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