From 3c69db4ce35822aad5dfcc67934bd3b08699df52 Mon Sep 17 00:00:00 2001
From: shenli <shenli3514@gmail.com>
Date: Thu, 8 Oct 2015 14:36:53 +0800
Subject: [PATCH] parser: Support dollar in identifier

---
 parser/parser_test.go | 3 +++
 parser/scanner.l      | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/parser/parser_test.go b/parser/parser_test.go
index ad89e84419..3311d0c22f 100644
--- a/parser/parser_test.go
+++ b/parser/parser_test.go
@@ -469,6 +469,9 @@ func (s *testParserSuite) TestParser0(c *C) {
 
 		// For quote identifier
 		{"select `a`, `a.b`, `a b` from t", true},
+
+		// For unquoted identifier
+		{"create table MergeContextTest$Simple (value integer not null, primary key (value))", true},
 	}
 
 	for _, t := range table {
diff --git a/parser/scanner.l b/parser/scanner.l
index 58dccbd562..8637da38d4 100644
--- a/parser/scanner.l
+++ b/parser/scanner.l
@@ -464,7 +464,7 @@ user		{u}{s}{e}{r}
 using		{u}{s}{i}{n}{g}
 
 idchar0		[a-zA-Z_]
-idchars		{idchar0}|[0-9]
+idchars		{idchar0}|[0-9$] // See: https://dev.mysql.com/doc/refman/5.7/en/identifiers.html
 ident		{idchar0}{idchars}*
 
 user_var	"@"{ident}