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-rw-r--r--sqlparse/lexer.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sqlparse/lexer.py b/sqlparse/lexer.py
index 09631da..3348be8 100644
--- a/sqlparse/lexer.py
+++ b/sqlparse/lexer.py
@@ -177,7 +177,7 @@ class Lexer(object):
(r'CASE\b', tokens.Keyword), # extended CASE(foo)
(r"`(``|[^`])*`", tokens.Name),
(r"´(´´|[^´])*´", tokens.Name),
- (r'\$([^\W\d_]\w*)?\$', tokens.Name.Builtin),
+ (r'\$([^\W\d]\w*)?\$', tokens.Name.Builtin),
(r'\?{1}', tokens.Name.Placeholder),
(r'[$:?%]\w+', tokens.Name.Placeholder),
# FIXME(andi): VALUES shouldn't be listed here