u

src/schema.js

@@ -109,7 +109,7 @@ BEGIN
         taxrate INT NULL,
         reducedtaxrate INT NULL,
         taxfreerate INT NULL,
-        poscustomergroup_id INT NULL,
+        poscustomergroup_id INT NOT NULL,
         CONSTRAINT UQ_company_name UNIQUE (name),
         CONSTRAINT FK_company_root_category FOREIGN KEY (root_category_id) REFERENCES category(id) ON DELETE SET NULL,
         CONSTRAINT FK_company_default_language FOREIGN KEY (default_language_id) REFERENCES language(id) ON DELETE SET NULL,
@@ -126,7 +126,9 @@ BEGIN
     CREATE TABLE customergroup (
         id INT IDENTITY(1,1) PRIMARY KEY,
         name NVARCHAR(255) NOT NULL,
-        company_id INT NOT NULL,
+        -- Nullable only for company-create chicken-egg (POS group first, then company, then SET).
+        -- Always set before commit; never left null for live rows.
+        company_id INT NULL,
         CONSTRAINT FK_customergroup_company FOREIGN KEY (company_id) REFERENCES company(id) ON DELETE CASCADE
     );
 END
@@ -270,6 +272,9 @@ BEGIN
         CONSTRAINT FK_articleean_article FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
         CONSTRAINT UQ_articleean_ean UNIQUE (ean)
     );
+    -- Hot path: getBySku EANs by article (UQ is ean-leading only)
+    CREATE INDEX IX_articleean_article_ean
+        ON articleean (article_id, ean);
 END
 `;
 
@@ -351,6 +356,9 @@ BEGIN
         CONSTRAINT FK_categoryarticle_article FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
         CONSTRAINT UQ_categoryarticle_category_article UNIQUE (category_id, article_id)
     );
+    -- Hot path: getBySku / resolve by article (UQ is category-leading)
+    CREATE INDEX IX_categoryarticle_article_category
+        ON categoryarticle (article_id, category_id);
 END
 `;
 
@@ -420,6 +428,10 @@ BEGIN
         CONSTRAINT FK_price_article FOREIGN KEY (article_id) REFERENCES article(id) ON DELETE CASCADE,
         CONSTRAINT FK_price_customergroup FOREIGN KEY (customergroup_id) REFERENCES customergroup(id) ON DELETE CASCADE
     );
+    -- Hot path: getBySku prices by article (covers ORDER BY + SELECT cols)
+    CREATE INDEX IX_price_article_cg_mult
+        ON price (article_id, customergroup_id, minmultiplier)
+        INCLUDE (net, tax_id);
 END
 `;