Fix merge skew with number literals
diff --git a/tests/sqlparser_postgres.rs b/tests/sqlparser_postgres.rs
index 16b7010..fce2673 100644
--- a/tests/sqlparser_postgres.rs
+++ b/tests/sqlparser_postgres.rs
@@ -280,7 +280,7 @@
         Statement::SetVariable {
             local: false,
             variable: "a".into(),
-            value: SetVariableValue::Literal(Value::Long(0)),
+            value: SetVariableValue::Literal(number("0")),
         }
     );