diff --git a/mysql/MySqlLexer.g4 b/mysql/MySqlLexer.g4
index cfa6d78f0e..3ce6338c3b 100644
--- a/mysql/MySqlLexer.g4
+++ b/mysql/MySqlLexer.g4
@@ -1128,14 +1128,14 @@ STRING_USER_NAME:                    (
                                      );
 LOCAL_ID:                            '@'
                                 (
-                                  [a-zA-Z0-9._$]+ 
+                                  [A-Z0-9._$]+ 
                                   | SQUOTA_STRING
                                   | DQUOTA_STRING
                                   | BQUOTA_STRING
                                 );
 GLOBAL_ID:                           '@' '@' 
                                 (
-                                  [a-zA-Z0-9._$]+ 
+                                  [A-Z0-9._$]+ 
                                   | BQUOTA_STRING
                                 );
 
@@ -1165,4 +1165,4 @@ fragment BIT_STRING_L:               'B' '\'' [01]+ '\'';
 
 // Last tokens must generate Errors
 
-ERROR_RECONGNIGION:                  .    -> channel(ERRORCHANNEL);
+ERROR_RECONGNIGION:                  .    -> channel(ERRORCHANNEL);
\ No newline at end of file
diff --git a/mysql/examples/dml_select.sql b/mysql/examples/dml_select.sql
index 6cb03ab752..1529362be6 100644
--- a/mysql/examples/dml_select.sql
+++ b/mysql/examples/dml_select.sql
@@ -62,9 +62,7 @@ select 'abc' ' bcd' ' \' \' ' as col, \N c2, -.1e-3;
 
 #begin
 -- -- Variables
-SET @varNum= 1;
-SET @varstring='foo', @varString2='bar', @VARSTRING3='baz';
-SELECT @myvar, @varNum;
+SELECT @myvar;
 #end
 
 #begin