Fix MATCH_RECOGNIZE exclusion after symbol

Author: osipovartem

src/parser/mod.rs

@@ -16854,6 +16854,10 @@ impl<'a> Parser<'a> {
             Token::Mul => RepetitionQuantifier::ZeroOrMore,
             Token::Plus => RepetitionQuantifier::OneOrMore,
             Token::Placeholder(s) if s == "?" => RepetitionQuantifier::AtMostOne,
+            Token::LBrace if matches!(self.peek_token_ref().token, Token::Minus) => {
+                self.prev_token();
+                return Ok(pattern);
+            }
             Token::LBrace => {
                 // quantifier is a range like {n} or {n,} or {,m} or {n,m}
                 let token = self.next_token();

tests/sqlparser_common.rs

@@ -13408,6 +13408,15 @@ fn test_match_recognize_patterns() {
     // exclusion
     check("{- FOO -}", Exclude(Named(Ident::new("FOO"))));
 
+    // exclusion immediately after a symbol is concatenation, not a range quantifier
+    check(
+        "S1 {- S2 -}",
+        Concat(vec![
+            Symbol(Named(Ident::new("S1"))),
+            Exclude(Named(Ident::new("S2"))),
+        ]),
+    );
+
     check(
         "PERMUTE(A, B, C)",
         Permute(vec![