1 files changed, 18 insertions, 8 deletions
diff --git a/sqlglot/parser.py b/sqlglot/parser.py
index b378f12..47c1c1d 100644
--- a/sqlglot/parser.py
+++ b/sqlglot/parser.py
@@ -329,6 +329,7 @@ class Parser:
         exp.DataType: lambda self: self._parse_types(),
         exp.From: lambda self: self._parse_from(),
         exp.Group: lambda self: self._parse_group(),
+        exp.Identifier: lambda self: self._parse_id_var(),
         exp.Lateral: lambda self: self._parse_lateral(),
         exp.Join: lambda self: self._parse_join(),
         exp.Order: lambda self: self._parse_order(),
@@ -371,11 +372,8 @@ class Parser:
         TokenType.PARAMETER: lambda self, _: exp.Parameter(this=self._parse_var() or self._parse_primary()),
         TokenType.BIT_STRING: lambda _, token: exp.BitString(this=token.text),
         TokenType.HEX_STRING: lambda _, token: exp.HexString(this=token.text),
-        TokenType.INTRODUCER: lambda self, token: self.expression(
-            exp.Introducer,
-            this=token.text,
-            expression=self._parse_var_or_string(),
-        ),
+        TokenType.BYTE_STRING: lambda _, token: exp.ByteString(this=token.text),
+        TokenType.INTRODUCER: lambda self, token: self._parse_introducer(token),
     }
 
     RANGE_PARSERS = {
@@ -500,7 +498,7 @@ class Parser:
         max_errors=3,
         null_ordering=None,
     ):
-        self.error_level = error_level or ErrorLevel.RAISE
+        self.error_level = error_level or ErrorLevel.IMMEDIATE
         self.error_message_context = error_message_context
         self.index_offset = index_offset
         self.unnest_column_only = unnest_column_only
@@ -928,6 +926,7 @@ class Parser:
         return self.expression(
             exp.Delete,
             this=self._parse_table(schema=True),
+            using=self._parse_csv(lambda: self._match(TokenType.USING) and self._parse_table(schema=True)),
             where=self._parse_where(),
         )
 
@@ -1148,7 +1147,7 @@ class Parser:
 
     def _parse_annotation(self, expression):
         if self._match(TokenType.ANNOTATION):
-            return self.expression(exp.Annotation, this=self._prev.text, expression=expression)
+            return self.expression(exp.Annotation, this=self._prev.text.strip(), expression=expression)
 
         return expression
 
@@ -1277,7 +1276,7 @@ class Parser:
         alias = self._parse_table_alias()
 
         if alias:
-            this = self.expression(exp.Alias, this=this, alias=alias)
+            this.set("alias", alias)
 
         if not self.alias_post_tablesample:
             table_sample = self._parse_table_sample()
@@ -1876,6 +1875,17 @@ class Parser:
         self._match_r_paren()
         return self.expression(exp.UserDefinedFunction, this=this, expressions=expressions)
 
+    def _parse_introducer(self, token):
+        literal = self._parse_primary()
+        if literal:
+            return self.expression(
+                exp.Introducer,
+                this=token.text,
+                expression=literal,
+            )
+
+        return self.expression(exp.Identifier, this=token.text)
+
     def _parse_udf_kwarg(self):
         this = self._parse_id_var()
         kind = self._parse_types()