diff --git a/go/test/endtoend/vtgate/vitess_tester/dual/queries.test b/go/test/endtoend/vtgate/vitess_tester/dual/queries.test
new file mode 100644
index 00000000000..77a6e1595e0
--- /dev/null
+++ b/go/test/endtoend/vtgate/vitess_tester/dual/queries.test
@@ -0,0 +1,4 @@
+# file with tests that only use the dual table
+
+# Dual query that is using tilda operator in a complex expression
+SELECT 1 WHERE (~ (1||0)) IS NULL;
diff --git a/go/test/endtoend/vtgate/vitess_tester/join/join.test b/go/test/endtoend/vtgate/vitess_tester/join/join.test
index 72d79a1206e..e550145f8d5 100644
--- a/go/test/endtoend/vtgate/vitess_tester/join/join.test
+++ b/go/test/endtoend/vtgate/vitess_tester/join/join.test
@@ -76,4 +76,3 @@ from t1
          left join (select t4.col, count(*) as count from t4 group by t4.col) t3 on t3.col = t2.id
 where t1.id IN (1, 2)
 group by t2.id, t4.col;
-
diff --git a/go/vt/sqlparser/normalizer_test.go b/go/vt/sqlparser/normalizer_test.go
index c574b00832d..45e24407ef9 100644
--- a/go/vt/sqlparser/normalizer_test.go
+++ b/go/vt/sqlparser/normalizer_test.go
@@ -418,6 +418,13 @@ func TestNormalize(t *testing.T) {
 			"bv2": sqltypes.Int64BindVariable(2),
 			"bv3": sqltypes.TestBindVariable([]any{1, 2}),
 		},
+	}, {
+		in:      "SELECT 1 WHERE (~ (1||0)) IS NULL",
+		outstmt: "select :bv1 /* INT64 */ from dual where ~(:bv1 /* INT64 */ or :bv2 /* INT64 */) is null",
+		outbv: map[string]*querypb.BindVariable{
+			"bv1": sqltypes.Int64BindVariable(1),
+			"bv2": sqltypes.Int64BindVariable(0),
+		},
 	}}
 	parser := NewTestParser()
 	for _, tc := range testcases {
@@ -508,6 +515,7 @@ func TestNormalizeOneCasae(t *testing.T) {
 	err = Normalize(tree, NewReservedVars("vtg", known), bv)
 	require.NoError(t, err)
 	normalizerOutput := String(tree)
+	require.EqualValues(t, testOne.output, normalizerOutput)
 	if normalizerOutput == "otheradmin" || normalizerOutput == "otherread" {
 		return
 	}
diff --git a/go/vt/sqlparser/precedence.go b/go/vt/sqlparser/precedence.go
index ec590b23f95..6df5e8e227e 100644
--- a/go/vt/sqlparser/precedence.go
+++ b/go/vt/sqlparser/precedence.go
@@ -38,7 +38,6 @@ const (
 	P14
 	P15
 	P16
-	P17
 )
 
 // precedenceFor returns the precedence of an expression.
@@ -83,7 +82,7 @@ func precedenceFor(in Expr) Precendence {
 		switch node.Operator {
 		case UPlusOp, UMinusOp:
 			return P4
-		case BangOp:
+		default:
 			return P3
 		}
 	}
diff --git a/go/vt/sqlparser/precedence_test.go b/go/vt/sqlparser/precedence_test.go
index 0d29d8b87e3..0a14df5a2c1 100644
--- a/go/vt/sqlparser/precedence_test.go
+++ b/go/vt/sqlparser/precedence_test.go
@@ -158,6 +158,7 @@ func TestParens(t *testing.T) {
 		{in: "(10 - 2) - 1", expected: "10 - 2 - 1"},
 		{in: "10 - (2 - 1)", expected: "10 - (2 - 1)"},
 		{in: "0 <=> (1 and 0)", expected: "0 <=> (1 and 0)"},
+		{in: "(~ (1||0)) IS NULL", expected: "~(1 or 0) is null"},
 	}
 
 	parser := NewTestParser()