fix: grave accent support.

.travis.yml

@@ -9,6 +9,7 @@ node_js:
   - "v4.2.1"
   - "v4.3.0"
   - "v6.9.1"
+  - "v8.9.1"
 scripts: {
-  "test": "mocha "
+  "test": "make test"
   }

Makefile

@@ -4,7 +4,7 @@ test:
 	node --harmony ./node_modules/.bin/jison -m js ./src/sqlParser.jison  -o ./dist/parser/sqlParser.js
 	cat src/stringify.js >> ./dist/parser/sqlParser.js
 	cat src/suffix.js >> ./dist/parser/sqlParser.js
-	./node_modules/mocha/bin/mocha $(TEST)
+	./node_modules/mocha/bin/mocha $(TEST) --require babel-register
 
-.PHONY: test release
+.PHONY: test
 

package.json

@@ -4,7 +4,7 @@
   "description": "",
   "main": "./dist/parser/sqlParser.js",
   "scripts": {
-    "test": "mocha test/main.test.js --require babel-register",
+    "test": "make test",
     "benchmark": "node test/benchmark.js"
   },
   "repository": {

src/sqlParser.jison

@@ -11,6 +11,7 @@
 [#]\s.*\n                                                         /* skip sql comments */
 \s+                                                               /* skip whitespace */
 
+[`][a-zA-Z_\u4e00-\u9fa5][a-zA-Z0-9_\u4e00-\u9fa5]*[`]            return 'IDENTIFIER'
 [\w]+[\u4e00-\u9fa5]+[0-9a-zA-Z_\u4e00-\u9fa5]*                   return 'IDENTIFIER'
 [\u4e00-\u9fa5][0-9a-zA-Z_\u4e00-\u9fa5]*                         return 'IDENTIFIER'
 SELECT                                                            return 'SELECT'

test/main.test.js

@@ -120,5 +120,9 @@ AND (rd.rd_numberofrooms <= (select sum(rn.reservation_numberofrooms) as count_r
 )
     `);
   });
+
+  it ('test11 SELECT `LEFT`(a, 3) FROM b support.', function () {
+    testParser('SELECT `LEFT`(a, 3) FROM b');
+  });
 });