diff --git a/src/mysql.db.ts b/src/mysql.db.ts
index 90365e8..d105d5a 100644
--- a/src/mysql.db.ts
+++ b/src/mysql.db.ts
@@ -20,12 +20,13 @@ import {
   _mapValues,
   _Memo,
   _omit,
-  AnyObjectWithId,
+  AnyPartialObjectWithId,
   CommonLogger,
   commonLoggerPrefix,
   JsonSchemaObject,
   JsonSchemaRootObject,
-  ObjectWithId,
+  PartialObjectWithId,
+  Saved,
 } from '@naturalcycles/js-lib'
 import { ReadableTyped, white } from '@naturalcycles/nodejs-lib'
 import {
@@ -47,7 +48,7 @@ import {
 } from './schema/mysql.schema.util'
 
 export interface MysqlDBOptions extends CommonDBOptions {}
-export interface MysqlDBSaveOptions<ROW extends Partial<ObjectWithId> = AnyObjectWithId>
+export interface MysqlDBSaveOptions<ROW extends PartialObjectWithId = AnyPartialObjectWithId>
   extends CommonDBSaveOptions<ROW> {}
 
 /**
@@ -195,11 +196,11 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
   }
 
   // GET
-  override async getByIds<ROW extends ObjectWithId>(
+  override async getByIds<ROW extends PartialObjectWithId>(
     table: string,
-    ids: ROW['id'][],
+    ids: string[],
     opt: MysqlDBOptions = {},
-  ): Promise<ROW[]> {
+  ): Promise<Saved<ROW>[]> {
     if (!ids.length) return []
     const q = new DBQuery<ROW>(table).filterEq('id', ids)
     const { rows } = await this.runQuery(q, opt)
@@ -207,10 +208,10 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
   }
 
   // QUERY
-  override async runQuery<ROW extends ObjectWithId, OUT = ROW>(
+  override async runQuery<ROW extends PartialObjectWithId>(
     q: DBQuery<ROW>,
     _opt: MysqlDBOptions = {},
-  ): Promise<RunQueryResult<OUT>> {
+  ): Promise<RunQueryResult<Saved<ROW>>> {
     const sql = dbQueryToSQLSelect(q)
     if (!sql) {
       return {
@@ -260,7 +261,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
     }
   }
 
-  override async runQueryCount<ROW extends ObjectWithId>(
+  override async runQueryCount<ROW extends PartialObjectWithId>(
     q: DBQuery<ROW>,
     _opt?: CommonDBOptions,
   ): Promise<number> {
@@ -268,10 +269,10 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
     return (rows[0] as any)._count
   }
 
-  override streamQuery<ROW extends ObjectWithId, OUT = ROW>(
+  override streamQuery<ROW extends PartialObjectWithId>(
     q: DBQuery<ROW>,
     _opt: MysqlDBOptions = {},
-  ): ReadableTyped<OUT> {
+  ): ReadableTyped<Saved<ROW>> {
     const sql = dbQueryToSQLSelect(q)
     if (!sql) {
       return Readable.from([])
@@ -294,7 +295,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
   }
 
   // SAVE
-  override async saveBatch<ROW extends Partial<ObjectWithId>>(
+  override async saveBatch<ROW extends PartialObjectWithId>(
     table: string,
     rowsInput: ROW[],
     opt: MysqlDBSaveOptions<ROW> = {},
@@ -363,11 +364,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
   /**
    * Limitation: always returns [], regardless of which rows are actually deleted
    */
-  override async deleteByIds<ROW extends ObjectWithId>(
-    table: string,
-    ids: ROW['id'][],
-    _opt?: MysqlDBOptions,
-  ): Promise<number> {
+  override async deleteByIds(table: string, ids: string[], _opt?: MysqlDBOptions): Promise<number> {
     if (!ids.length) return 0
     const sql = dbQueryToSQLDelete(new DBQuery(table).filterEq('id', ids))
     if (!sql) return 0
@@ -376,7 +373,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
     return affectedRows
   }
 
-  override async deleteByQuery<ROW extends ObjectWithId>(
+  override async deleteByQuery<ROW extends PartialObjectWithId>(
     q: DBQuery<ROW>,
     _opt?: CommonDBOptions,
   ): Promise<number> {
@@ -396,7 +393,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
   /**
    * dropIfExists=true needed as a safety check
    */
-  override async createTable<ROW extends ObjectWithId>(
+  override async createTable<ROW extends PartialObjectWithId>(
     table: string,
     schema: JsonSchemaObject<ROW>,
     opt: CommonDBCreateOptions = {},
@@ -413,7 +410,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
       .filter(Boolean)
   }
 
-  override async getTableSchema<ROW extends ObjectWithId>(
+  override async getTableSchema<ROW extends PartialObjectWithId>(
     table: string,
   ): Promise<JsonSchemaRootObject<ROW>> {
     const stats = await this.runSQL<MySQLTableStats[]>({
@@ -423,7 +420,7 @@ export class MysqlDB extends BaseCommonDB implements CommonDB {
     return mysqlTableStatsToJsonSchemaField<ROW>(table, stats, this.cfg.logger)
   }
 
-  override async updateByQuery<ROW extends ObjectWithId>(
+  override async updateByQuery<ROW extends PartialObjectWithId>(
     q: DBQuery<ROW>,
     patch: DBPatch<ROW>,
   ): Promise<number> {
diff --git a/yarn.lock b/yarn.lock
index aaaaf90..d5d4c1d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -799,9 +799,9 @@
     typescript "^5.0.2"
 
 "@naturalcycles/db-lib@^9.1.0":
-  version "9.1.0"
-  resolved "https://registry.yarnpkg.com/@naturalcycles/db-lib/-/db-lib-9.1.0.tgz#4c2d206301caeb67381713566d1945df91435a1f"
-  integrity sha512-qAJai7bRWY37+Wo/p8KyxaJ+d1UE2XIgIZoc8dcdYtB3XyEUjz3ZNNA4GeurgtxOBqeD5U0UxcOHbijJaHyzCg==
+  version "9.3.0"
+  resolved "https://registry.yarnpkg.com/@naturalcycles/db-lib/-/db-lib-9.3.0.tgz#d6727ff62b4150f26e83e3b68e5ca975229f154d"
+  integrity sha512-wcPFWmQ+jXtdXrSqPuXHnkzw4UjwvJUhtIIWFxLdsaoEFnA8peSsdpH+E5QIU7EDjXfQmYQ6nhcacmWQ6NvM+Q==
   dependencies:
     "@naturalcycles/js-lib" "^14.116.0"
     "@naturalcycles/nodejs-lib" "^13.1.1"
@@ -842,9 +842,9 @@
     yargs "^17.0.0"
 
 "@naturalcycles/js-lib@^14.0.0", "@naturalcycles/js-lib@^14.116.0", "@naturalcycles/js-lib@^14.47.0":
-  version "14.201.1"
-  resolved "https://registry.yarnpkg.com/@naturalcycles/js-lib/-/js-lib-14.201.1.tgz#67d7b74be557385736b489c4ab6f318cf8d093cf"
-  integrity sha512-NAxPDWxNiFs8Eidj4vt0jcRyvLJ2MuHmPuryIETvKRLfdQ3j14XfZbvCtNMfmX1Yfl0an0xE5fKN2yzKKJk0LQ==
+  version "14.204.1"
+  resolved "https://registry.yarnpkg.com/@naturalcycles/js-lib/-/js-lib-14.204.1.tgz#d81838e4a8cd889b734637c2b26a750d5758ef10"
+  integrity sha512-+2E30+MKFdlxnkbsBHBcbi8aTTPl3AZRe+NUzgimJoJw+7wJS0k6v2DVbrmQ1MCcEyQ4gV5jhOQT8iHEtDDSDw==
   dependencies:
     tslib "^2.0.0"
     zod "^3.20.2"
@@ -1642,9 +1642,9 @@ camelcase@^6.2.0:
   integrity sha512-Gmy6FhYlCY7uOElZUSbxo2UCDH8owEk996gkbrpsgGtrJLM3J7jGxl9Ic7Qwwj4ivOE5AWZWRMecDdF7hqGjFA==
 
 caniuse-lite@^1.0.30001565:
-  version "1.0.30001578"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001578.tgz#11741580434ce60aae4b4a9abee9f9f8d7bf5be5"
-  integrity sha512-J/jkFgsQ3NEl4w2lCoM9ZPxrD+FoBNJ7uJUpGVjIg/j0OwJosWM36EPDv+Yyi0V4twBk9pPmlFS+PLykgEvUmg==
+  version "1.0.30001579"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001579.tgz#45c065216110f46d6274311a4b3fcf6278e0852a"
+  integrity sha512-u5AUVkixruKHJjw/pj9wISlcMpgFWzSrczLZbrqBSxukQixmg0SJ5sZTpvaFvxU0HoQKd4yoyAogyrAz9pzJnA==
 
 chalk@5.3.0:
   version "5.3.0"
@@ -1992,9 +1992,9 @@ ecdsa-sig-formatter@1.0.11:
     safe-buffer "^5.0.1"
 
 electron-to-chromium@^1.4.601:
-  version "1.4.636"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.636.tgz#302cf4c3016d9d714ba246243a7c97b528e22fe7"
-  integrity sha512-NLE0GIy1OL9wRiKL20h9TkctBEYZuc99tquSS9MVdTahnuHputoETHeqDzgqGqyOY9NUH0g9wjfEuw5OD+wRcQ==
+  version "1.4.639"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.639.tgz#c6f9cc685f9efb2980d2cfc95a27f8142c9adf28"
+  integrity sha512-CkKf3ZUVZchr+zDpAlNLEEy2NJJ9T64ULWaDgy3THXXlPVPkLu3VOs9Bac44nebVtdwl2geSj6AxTtGDOxoXhg==
 
 emittery@^0.13.1:
   version "0.13.1"
@@ -3410,9 +3410,9 @@ jiti@^1.19.1:
   integrity sha512-gFqAIbuKyyso/3G2qhiO2OM6shY6EPP/R0+mkDbyspxKazh8BXDC5FiFsUjlczgdNz/vfra0da2y+aHrusLG/Q==
 
 joi@^17.9.2:
-  version "17.11.1"
-  resolved "https://registry.yarnpkg.com/joi/-/joi-17.11.1.tgz#f42951137d25c27f61807502b0af71f7abb885ba"
-  integrity sha512-671acnrx+w96PCcQOzvm0VYQVwNL2PVgZmDRaFuSsx8sIUmGzYElPw5lU8F3Cr0jOuPs1oM56p7W2a1cdDOwcw==
+  version "17.12.0"
+  resolved "https://registry.yarnpkg.com/joi/-/joi-17.12.0.tgz#a3fb5715f198beb0471cd551dd26792089c308d5"
+  integrity sha512-HSLsmSmXz+PV9PYoi3p7cgIbj06WnEBNT28n+bbBNcPZXZFqCzzvGqpTBPujx/Z0nh1+KNQPDrNgdmQ8dq0qYw==
   dependencies:
     "@hapi/hoek" "^9.3.0"
     "@hapi/topo" "^5.1.0"