Handle empty projection for pg

Author: tobyhede

src/ast/query.rs

@@ -350,7 +350,9 @@ impl fmt::Display for Select {
             }
         }
 
-        write!(f, " {}", display_comma_separated(&self.projection))?;
+        if !self.projection.is_empty() {
+            write!(f, " {}", display_comma_separated(&self.projection))?;
+        }
 
         if let Some(ref into) = self.into {
             write!(f, " {into}")?;

src/parser/mod.rs

@@ -9604,7 +9604,15 @@ impl<'a> Parser<'a> {
             top = Some(self.parse_top()?);
         }
 
-        let projection = self.parse_projection()?;
+        let projection = if dialect_of!(self is PostgreSqlDialect | GenericDialect)
+            && self.peek_keyword(Keyword::FROM)
+        {
+            vec![]
+        } else {
+            self.parse_projection()?
+        };
+
+        // let projection = self.parse_projection()?;
 
         let into = if self.parse_keyword(Keyword::INTO) {
             let temporary = self

tests/sqlparser_postgres.rs

@@ -5195,3 +5195,8 @@ fn parse_bitstring_literal() {
         ))]
     );
 }
+
+#[test]
+fn parse_select_without_projection() {
+    pg_and_generic().verified_stmt("SELECT FROM users");
+}