Adding upstream version 19.0.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tests/test_optimizer.py

@@ -246,6 +246,15 @@ class TestOptimizer(unittest.TestCase):
             "CREATE FUNCTION `udfs`.`myTest`(`x` FLOAT64) AS (1)",
         )
 
+        self.assertEqual(
+            optimizer.qualify.qualify(
+                parse_one("SELECT `bar_bazfoo_$id` FROM test", read="spark"),
+                schema={"test": {"bar_bazFoo_$id": "BIGINT"}},
+                dialect="spark",
+            ).sql(dialect="spark"),
+            "SELECT `test`.`bar_bazfoo_$id` AS `bar_bazfoo_$id` FROM `test` AS `test`",
+        )
+
         self.check_file(
             "qualify_columns", qualify_columns, execute=True, schema=self.schema, set_dialect=True
         )
@@ -271,6 +280,8 @@ class TestOptimizer(unittest.TestCase):
             set_dialect=True,
         )
 
+        self.assertEqual(optimizer.normalize_identifiers.normalize_identifiers("a%").sql(), '"a%"')
+
     def test_pushdown_projection(self):
         self.check_file("pushdown_projections", pushdown_projections, schema=self.schema)
 
@@ -978,3 +989,10 @@ FROM READ_CSV('tests/fixtures/optimizer/tpc-h/nation.csv.gz', 'delimiter', '|')
         query = parse_one("select a.b:c from d", read="snowflake")
         qualified = optimizer.qualify.qualify(query)
         self.assertEqual(qualified.expressions[0].alias, "c")
+
+    def test_qualify_tables_no_schema(self):
+        query = parse_one("select a from b")
+        self.assertEqual(
+            optimizer.qualify_tables.qualify_tables(query, catalog="catalog").sql(),
+            "SELECT a FROM b AS b",
+        )