ISSUES-14231 allow dollar and numver in identifier

src/Parsers/Lexer.cpp

@@ -146,13 +146,20 @@ Token Lexer::nextTokenImpl()
                 }
             }
 
-            /// word character cannot go just after number (SELECT 123FROM)
+            /// Try to parse it to a identifier(1identifier_name), return ErrorWrongNumber if not
             if (pos < end && isWordCharASCII(*pos))
             {
                 ++pos;
                 while (pos < end && isWordCharASCII(*pos))
                     ++pos;
-                return Token(TokenType::ErrorWrongNumber, token_begin, pos);
+
+                for (const char * iterator = token_begin; iterator < pos; ++iterator)
+                {
+                    if (!isWordCharASCII(*iterator) && *iterator != '$')
+                        return Token(TokenType::ErrorWrongNumber, token_begin, pos);
+                }
+
+                return Token(TokenType::BareWord, token_begin, pos);
             }
 
             return Token(TokenType::Number, token_begin, pos);

tests/queries/0_stateless/01460_allow_dollar_and_number_in_identifier.reference

@@ -1,2 +1,4 @@
 $alias$name$
 1
+1alias1name1
+1

tests/queries/0_stateless/01460_allow_dollar_and_number_in_identifier.sql

@@ -1 +1,2 @@
 SELECT 1 AS $alias$name$ FORMAT TSVWithNames;
+SELECT 1 AS 1alias1name1 FORMAT TSVWithNames;