diff --git a/lib/operator_parser.js b/lib/operator_parser.js
old mode 100644
new mode 100755
index 6f3be1d..b5a653d
--- a/lib/operator_parser.js
+++ b/lib/operator_parser.js
@@ -3,34 +3,39 @@
 var RelationalStore = require('./relational-util')
 var _ = require('lodash')
 
+var like$ = function (current_name, value, params, values) {
+  values.push(value)
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + ' like ' + '?')
+}
+
 var ne$ = function (current_name, value, params, values) {
   values.push(value)
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + '<>' + '?')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + '<>' + '?')
 }
 
 var eq$ = function (current_name, value, params, values) {
   values.push(value)
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + '=' + '?')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + '=' + '?')
 }
 
 var gte$ = function (current_name, value, params, values) {
   values.push(value)
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + '>=' + '?')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + '>=' + '?')
 }
 
 var lte$ = function (current_name, value, params, values) {
   values.push(value)
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + '<=' + '?')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + '<=' + '?')
 }
 
 var gt$ = function (current_name, value, params, values) {
   values.push(value)
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + '>' + '?')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + '>' + '?')
 }
 
 var lt$ = function (current_name, value, params, values) {
   values.push(value)
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + '<' + '?')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + '<' + '?')
 }
 
 var in$ = function (current_name, value, params, values) {
@@ -42,7 +47,7 @@ var in$ = function (current_name, value, params, values) {
     value[index] = "'" + value[index] + "'"
   }
 
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + ' IN (' + value + ')')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + ' IN (' + value + ')')
 }
 
 var nin$ = function (current_name, value, params, values) {
@@ -54,10 +59,10 @@ var nin$ = function (current_name, value, params, values) {
   for (var index in value) {
     value[index] = "'" + value[index] + "'"
   }
-  params.push('"' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '"' + ' NOT IN (' + value + ')')
+  params.push('`' + RelationalStore.escapeStr(RelationalStore.camelToSnakeCase(current_name)) + '`' + ' NOT IN (' + value + ')')
 }
 
-
+module.exports.like$ = like$
 module.exports.ne$ = ne$
 module.exports.gte$ = gte$
 module.exports.gt$ = gt$