fix(include): simplify join logic a bit so source is always on the left

lib/dialects/abstract/query-generator.js

@@ -933,12 +933,12 @@ module.exports = (function() {
               }
             }
           } else {
-            var left = association.associationType === 'BelongsTo' ? association.target : association.source
+            var left = association.source
               , primaryKeysLeft = left.primaryKeyAttributes
-              , tableLeft = association.associationType === 'BelongsTo' ? as : parentTable
-              , attrLeft = primaryKeysLeft[0]
-              , tableRight = association.associationType === 'BelongsTo' ? parentTable : as
-              , attrRight = association.identifierField || association.identifier
+              , tableLeft = parentTable
+              , attrLeft = association.associationType === 'BelongsTo' ? association.identifierField || association.identifier : primaryKeysLeft[0]
+              , tableRight = as
+              , attrRight = association.associationType !== 'BelongsTo' ? association.identifierField || association.identifier : primaryKeysLeft[0]
               , joinOn;
 
             // Alias the left attribute if the left attribute is not from a subqueried main table
@@ -962,7 +962,6 @@ module.exports = (function() {
 
               // Right side
               (
-                (subQuery && !include.subQuery && include.parent.subQuery && (include.hasParentRequired || include.hasParentWhere)) && self.quoteIdentifier(tableRight + '.' + attrRight) ||
                 self.quoteTable(tableRight) + '.' + self.quoteIdentifier(attrRight)
               );
 

test/include/findAll.test.js

@@ -957,11 +957,16 @@ describe(Support.getTestDialectTeaser("Include"), function () {
             // Test
             User.find({
               where: { username: 'John'},
-              include: [
-                { model: Address, include: [
-                  { model: Street }
-                ], required: true, where: { active: true } }
-              ]
+              include: [{
+                model: Address,
+                required: true,
+                where: {
+                  active: true
+                },
+                include: [{
+                  model: Street
+                }]
+              }]
             }).done(function (err, john) {
               expect(err).not.to.be.ok
               expect(john.Address).to.be.ok
@@ -1023,7 +1028,7 @@ describe(Support.getTestDialectTeaser("Include"), function () {
 
             chainer.run().done(callback)
           }]
-        }, function (err) {
+        }, function (err) {          
           expect(err).not.to.be.ok
 
           User.findAll({