diff --git a/.gitignore b/.gitignore
index f9ad7fac..00a1f6b3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,11 @@
+.nyc_output
+coverage
+dist
+logs
 node_modules
 tmp
-coverage
-.nyc_output
+
+*.log
 docs/Gemfile.lock
 package-lock.json
 .DS_Store
@@ -9,11 +13,8 @@ test/types/*.js
 test/types/*.map
 test/integration/suite/sharding.test.js*
 test/models/photo.js*
+src/browser.js*
 src/decorators.js*
 src/data_types.js*
+src/drivers/sqljs/*.js*
 src/raw.js*
-
-# Logs
-logs
-*.log
-dist/
\ No newline at end of file
diff --git a/src/spell.js b/src/spell.js
index 2a79fe2a..5731ad21 100644
--- a/src/spell.js
+++ b/src/spell.js
@@ -170,7 +170,7 @@ function joinOnConditions(spell, BaseModel, baseName, refName, { where, associat
       return { type: 'op', name: 'and', args: [ result, condition ] };
     });
     walkExpr(whereConditions, node => {
-      if (node.type == 'id') node.qualifiers = [refName];
+      if (node.type == 'id' && !node.qualifiers) node.qualifiers = [refName];
     });
     return { type: 'op', name: 'and', args: [ onConditions, whereConditions ] };
   } else {
@@ -386,8 +386,18 @@ class Spell {
   }
 
   #emptySpell() {
+    const whereConditions = [];
+    const { shardingKey } = this.Model;
+    if (shardingKey) {
+      for (const condition of this.whereConditions) {
+        const [arg] = condition.args;
+        if (arg.type === 'id' && arg.value === shardingKey) {
+          whereConditions.push(deepClone(condition));
+        }
+      }
+    }
     Object.assign(this, {
-      whereConditions: [],
+      whereConditions,
       groups: [],
       orders: deepClone(this.orders),
       havingConditions: [],
diff --git a/test/dumpfile.sql b/test/dumpfile.sql
index 66cc43e6..3eb0d344 100644
--- a/test/dumpfile.sql
+++ b/test/dumpfile.sql
@@ -74,7 +74,8 @@ CREATE TABLE `likes` (
   `id` bigint(20) AUTO_INCREMENT PRIMARY KEY,
   `gmt_create` timestamp(3) NULL,
   `gmt_modified` timestamp DEFAULT CURRENT_TIMESTAMP,
-  `article_id` bigint(20) NOT NULL,
+  `target_id` bigint(20) NOT NULL,
+  `target_type` bigint(20) NOT NULL,
   `user_id` bigint(20) NOT NULL,
   `gmt_deleted` timestamp(3) NULL
 );
diff --git a/test/integration/suite/associations.test.js b/test/integration/suite/associations.test.js
index 80ddf792..dbae658c 100644
--- a/test/integration/suite/associations.test.js
+++ b/test/integration/suite/associations.test.js
@@ -6,6 +6,7 @@ const sinon = require('sinon');
 
 const Attachment = require('../../models/attachment');
 const Comment = require('../../models/comment');
+const Like = require('../../models/like');
 const Post = require('../../models/post');
 const Tag = require('../../models/tag');
 const TagMap = require('../../models/tagMap');
@@ -76,7 +77,8 @@ describe('=> Associations', function() {
       Attachment.remove({}, true),
       Comment.remove({}, true),
       TagMap.remove({}, true),
-      Tag.remove({}, true)
+      Tag.remove({}, true),
+      Like.remove({ userId: 1 }, true),
     ]);
   });
 
@@ -96,6 +98,14 @@ describe('=> Associations', function() {
     expect(attachment.post).to.be.a(Post);
   });
 
+  it('Bone.belongsTo({ where })', async function() {
+    await Like.create({ targetId: 1, targetType: 0, userId: 1 });
+    await assert.doesNotReject(async function() {
+      const like = await Like.findOne({ userId: 1 }).with('post');
+      assert.ok('post' in like);
+    });
+  });
+
   it('Bone.hasMany', async function() {
     let post = await Post.first.with('comments');
     expect(post.comments.length).to.be.above(0);
diff --git a/test/integration/suite/querying.test.js b/test/integration/suite/querying.test.js
index 69fa4262..d7cc0b85 100644
--- a/test/integration/suite/querying.test.js
+++ b/test/integration/suite/querying.test.js
@@ -768,13 +768,13 @@ describe('=> Sharding', function() {
 
   it('should throw if sharding key is defined but not set when INSERT', async function() {
     await assert.rejects(async () => {
-      await new Like({ articleId: 1, userId: null }).create({ validate: false });
+      await new Like({ targetId: 1, targetType: 0, userId: null }).create({ validate: false });
     }, /sharding key/i);
   });
 
   it('should not throw if sharding key is defined and set when INSERT', async function() {
     await assert.doesNotReject(async () => {
-      await new Like({ userId: 1, articleId: 1 }).create();
+      await new Like({ userId: 1, targetId: 1, targetType: 0 }).create();
     }, /sharding key/i);
   });
 
@@ -803,7 +803,7 @@ describe('=> Sharding', function() {
   });
 
   it('should append sharding key to DELETE condition', async function() {
-    const like = await Like.create({ articleId: 1, userId: 1 });
+    const like = await Like.create({ targetId: 1, targetType: 0, userId: 1 });
     await assert.doesNotReject(async () => {
       await like.remove();
       await like.remove(true);
@@ -811,15 +811,15 @@ describe('=> Sharding', function() {
   });
 
   it('should append sharding key to UPDATE condition', async function() {
-    const like = await Like.create({ articleId: 1, userId: 1});
-    like.articleId = 2;
+    const like = await Like.create({ targetId: 1, targetType: 0, userId: 1});
+    like.targetId = 2;
     await assert.doesNotReject(async () => {
       await like.update();
     }, /sharding key/i);
   });
 
   it('should append sharking key to SELECT condition', async function() {
-    const like = await Like.create({ articleId: 1, userId: 1});
+    const like = await Like.create({ targetId: 1, targetType: 0, userId: 1});
     await assert.doesNotReject(async () => {
       await like.reload();
     }, /sharding key/);
diff --git a/test/models/like.js b/test/models/like.js
index 3d71f8e4..a70119be 100644
--- a/test/models/like.js
+++ b/test/models/like.js
@@ -2,6 +2,11 @@
 
 const { Bone } =require('../..');
 
+const TARGET_TYPE = {
+  post: 0,
+  comment: 1,
+};
+
 class Like extends Bone {
   static get table() {
     return 'likes';
@@ -14,6 +19,13 @@ class Like extends Bone {
   static get shardingKey() {
     return 'userId';
   }
+
+  static initialize() {
+    this.belongsTo('post', {
+      foreignKey: 'targetId',
+      where: { 'likes.targetType': TARGET_TYPE.post },
+    });
+  }
 }
 
 module.exports = Like;