Document the sys::get_transaction_isolation() function
@@ -133,3 +133,16 @@ System
db> SELECT sys::get_version_as_str();
{'1.0-alpha.1'}
+
+
+.. eql:function:: sys::get_transaction_isolation() -> str
+
+ Return the isolation level of the current transaction.
+
+ Possible return values: ``"repeatable read"``,
+ ``"serialized"``.
+
+ .. code-block:: edgeql-repl
+
+ db> SELECT sys::get_transaction_isolation();
+ {'repeatable read'}
