diff --git a/lib/SqlString.js b/lib/SqlString.js
index 5bfa2e7..0ee25ed 100644
--- a/lib/SqlString.js
+++ b/lib/SqlString.js
@@ -23,6 +23,10 @@ SqlString.escapeId = function escapeId(val, forbidQualified) {
     return sql;
   }
 
+  if (val instanceof Escaped) {
+    return String(val);
+  }
+
   if (forbidQualified) {
     return '`' + String(val).replace(/`/g, '``') + '`';
   }
@@ -39,7 +43,9 @@ SqlString.escape = function escape(val, stringifyObjects, timeZone) {
     case 'boolean': return (val) ? 'true' : 'false';
     case 'number': return val + '';
     case 'object':
-      if (val instanceof Date) {
+      if (val instanceof Escaped) {
+        return String(val);
+      } else if (val instanceof Date) {
         return SqlString.dateToString(val, timeZone || 'local');
       } else if (Array.isArray(val)) {
         return SqlString.arrayToList(val, timeZone);
@@ -56,6 +62,10 @@ SqlString.escape = function escape(val, stringifyObjects, timeZone) {
   }
 };
 
+SqlString.escaped = function escaped(val) {
+  return new Escaped(val);
+};
+
 SqlString.arrayToList = function arrayToList(array, timeZone) {
   var sql = '';
 
@@ -218,3 +228,9 @@ function convertTimezone(tz) {
   }
   return false;
 }
+
+function Escaped(val) {
+  this.toString = function toString() {
+    return String(val);
+  };
+}
diff --git a/test/unit/test-SqlString.js b/test/unit/test-SqlString.js
index ae85233..746921b 100644
--- a/test/unit/test-SqlString.js
+++ b/test/unit/test-SqlString.js
@@ -45,6 +45,10 @@ test('SqlString.escapeId', {
 
   'nested arrays are flattened': function() {
     assert.equal(SqlString.escapeId(['a', ['b', ['t.c']]]), '`a`, `b`, `t`.`c`');
+  },
+
+  'instances of Escaped are not quoted': function() {
+    assert.equal(SqlString.escapeId(SqlString.escaped('@a := 42')), '@a := 42');
   }
 });
 
@@ -118,6 +122,10 @@ test('SqlString.escape', {
     assert.equal(SqlString.escape('Super'), "'Super'");
   },
 
+  'instances of Escaped get not escaped': function() {
+    assert.equal(SqlString.escape({a: SqlString.escaped('@a')}), '`a` = @a');
+  },
+
   '\0 gets escaped': function() {
     assert.equal(SqlString.escape('Sup\0er'), "'Sup\\0er'");
     assert.equal(SqlString.escape('Super\0'), "'Super\\0'");