Use dialect when calling Utils.format in query gen

lib/dialects/mysql/query-generator.js

@@ -5,6 +5,7 @@ var Utils     = require("../../utils")
 
 module.exports = (function() {
   var QueryGenerator = {
+    dialect: 'mysql',
     addSchema: function(opts) {
       var tableName
       var schema        = (!!opts && !!opts.options && !!opts.options.schema ? opts.options.schema : undefined)
@@ -437,7 +438,7 @@ module.exports = (function() {
       } else if (typeof smth === "string") {
         result = smth
       } else if (Array.isArray(smth)) {
-        result = Utils.format(smth)
+        result = Utils.format(smth, this.dialect)
       }
 
       return result ? result : '1=1'

lib/dialects/postgres/query-generator.js

@@ -8,6 +8,7 @@ var Utils       = require("../../utils")
 module.exports = (function() {
   var QueryGenerator = {
     options: {},
+    dialect: 'postgres',
 
     addSchema: function(opts) {
       var tableName         = undefined

lib/dialects/sqlite/query-generator.js

@@ -12,6 +12,7 @@ var hashToWhereConditions = MySqlQueryGenerator.hashToWhereConditions
 module.exports = (function() {
   var QueryGenerator = {
     options: {},
+    dialect: 'sqlite',
 
     addSchema: function(opts) {
       var tableName       = undefined