feat: add foreign key indexes (#17672)

server/src/sql-tools/from-code/processors/unique-constraint.processor.ts

@@ -1,6 +1,7 @@
+import { onMissingColumn, resolveColumn } from 'src/sql-tools/from-code/processors/column.processor';
 import { onMissingTable, resolveTable } from 'src/sql-tools/from-code/processors/table.processor';
 import { Processor } from 'src/sql-tools/from-code/processors/type';
-import { asUniqueConstraintName } from 'src/sql-tools/helpers';
+import { asKey } from 'src/sql-tools/helpers';
 import { DatabaseConstraintType } from 'src/sql-tools/types';
 
 export const processUniqueConstraints: Processor = (builder, items) => {
@@ -24,4 +25,34 @@ export const processUniqueConstraints: Processor = (builder, items) => {
       synchronize: options.synchronize ?? true,
     });
   }
+
+  // column level constraints
+  for (const {
+    type,
+    item: { object, propertyName, options },
+  } of items.filter((item) => item.type === 'column' || item.type === 'foreignKeyColumn')) {
+    const { table, column } = resolveColumn(builder, object, propertyName);
+    if (!table) {
+      onMissingTable(builder, '@Column', object);
+      continue;
+    }
+
+    if (!column) {
+      // should be impossible since they are created in `column.processor.ts`
+      onMissingColumn(builder, '@Column', object, propertyName);
+      continue;
+    }
+
+    if (type === 'column' && !options.primary && (options.unique || options.uniqueConstraintName)) {
+      table.constraints.push({
+        type: DatabaseConstraintType.UNIQUE,
+        name: options.uniqueConstraintName || asUniqueConstraintName(table.name, [column.name]),
+        tableName: table.name,
+        columnNames: [column.name],
+        synchronize: options.synchronize ?? true,
+      });
+    }
+  }
 };
+
+const asUniqueConstraintName = (table: string, columns: string[]) => asKey('UQ_', table, columns);