diff --git a/tests/cases/standalone/common/system/query_options.result b/tests/cases/standalone/common/system/query_options.result
new file mode 100644
index 00000000000..515c379da8e
--- /dev/null
+++ b/tests/cases/standalone/common/system/query_options.result
@@ -0,0 +1,146 @@
+-- Query options are session-scoped; request hints take precedence per query.
+-- SQLNESS PROTOCOL MYSQL
+SET query_parallelism = 8;
+
+affected_rows: 0
+
+-- SQLNESS PROTOCOL MYSQL
+SHOW VARIABLES query.parallelism;
+
++-------------------+
+| query.parallelism |
++-------------------+
+| 8                 |
++-------------------+
+
+-- SQLNESS PROTOCOL MYSQL
+SET query.allow_query_fallback = false;
+
+affected_rows: 0
+
+-- SQLNESS PROTOCOL MYSQL
+SHOW VARIABLES query.allow_query_fallback;
+
++----------------------------+
+| query.allow_query_fallback |
++----------------------------+
+| false                      |
++----------------------------+
+
+-- Query namespace typos and unapproved DataFusion options are errors.
+-- SQLNESS PROTOCOL MYSQL
+SET query.unknown_option = true;
+
+Failed to execute query, err: MySqlError { ERROR 1210 (HY000): (InvalidArguments): Invalid value for parameter "query.unknown_option": true
+Hint: Unknown or unsupported query option }
+
+-- SQLNESS PROTOCOL MYSQL
+SET datafusion.execution.batch_size = 128;
+
+Failed to execute query, err: MySqlError { ERROR 1210 (HY000): (InvalidArguments): Invalid value for parameter "datafusion.execution.batch_size": 128
+Hint: Unknown or unsupported query option }
+
+-- Computed expressions are not accepted for query options.
+-- SQLNESS PROTOCOL MYSQL
+SET query.parallelism = 4 + 4;
+
+Failed to execute query, err: MySqlError { ERROR 1210 (HY000): (InvalidArguments): Invalid value for parameter "query.parallelism": 4 + 4
+Hint: Expected exactly one literal value }
+
+-- Third-party startup variables remain compatible.
+-- SQLNESS PROTOCOL MYSQL
+SET autocommit = 1;
+
+affected_rows: 0
+
+-- SQLNESS PROTOCOL POSTGRES
+SET QUERY.PARALLELISM TO 16;
+
+Affected Rows: 0
+
+-- SQLNESS PROTOCOL POSTGRES
+SHOW QUERY.PARALLELISM;
+
++-------------------+
+| QUERY.PARALLELISM |
++-------------------+
+| 16                |
++-------------------+
+
+-- Native DataFusion options are accepted through MySQL SET and SHOW.
+-- SQLNESS PROTOCOL MYSQL
+SET datafusion.optimizer.prefer_hash_join = false;
+
+affected_rows: 0
+
+-- SQLNESS PROTOCOL MYSQL
+SHOW VARIABLES datafusion.optimizer.prefer_hash_join;
+
++---------------------------------------+
+| datafusion.optimizer.prefer_hash_join |
++---------------------------------------+
+| false                                 |
++---------------------------------------+
+
+-- SQLNESS PROTOCOL MYSQL
+SET query.enable_remote_dynamic_filter_pushdown = false;
+
+affected_rows: 0
+
+-- SQLNESS PROTOCOL MYSQL
+SHOW VARIABLES query.enable_remote_dynamic_filter_pushdown;
+
++---------------------------------------------+
+| query.enable_remote_dynamic_filter_pushdown |
++---------------------------------------------+
+| false                                       |
++---------------------------------------------+
+
+-- Invalid query parallelism is rejected at both bounds.
+-- SQLNESS PROTOCOL MYSQL
+SET query.parallelism = 0;
+
+Failed to execute query, err: MySqlError { ERROR 1210 (HY000): (InvalidArguments): Invalid value for parameter "query.parallelism": 0
+Hint: query.parallelism must be between 1 and 1024 }
+
+-- SQLNESS PROTOCOL MYSQL
+SET query.parallelism = 1025;
+
+Failed to execute query, err: MySqlError { ERROR 1210 (HY000): (InvalidArguments): Invalid value for parameter "query.parallelism": 1025
+Hint: query.parallelism must be between 1 and 1024 }
+
+-- Native DataFusion options are accepted through PostgreSQL SET and SHOW.
+-- SQLNESS PROTOCOL POSTGRES
+SET datafusion.optimizer.enable_dynamic_filter_pushdown TO 'FALSE';
+
+Affected Rows: 0
+
+-- SQLNESS PROTOCOL POSTGRES
+SHOW datafusion.optimizer.enable_dynamic_filter_pushdown;
+
++-----------------------------------------------------+
+| datafusion.optimizer.enable_dynamic_filter_pushdown |
++-----------------------------------------------------+
+| false                                               |
++-----------------------------------------------------+
+
+-- SQLNESS PROTOCOL POSTGRES
+SET query.allow_query_fallback TO true;
+
+Affected Rows: 0
+
+-- SQLNESS PROTOCOL POSTGRES
+SHOW query.allow_query_fallback;
+
++----------------------------+
+| query.allow_query_fallback |
++----------------------------+
+| true                       |
++----------------------------+
+
+-- PostgreSQL query-option typos are errors.
+-- SQLNESS PROTOCOL POSTGRES
+SET query.unknown_option TO true;
+
+Failed to execute query, encountered: Error { kind: Db, cause: Some(DbError { severity: "ERROR", parsed_severity: None, code: SqlState(E22023), message: "Invalid value for parameter \"query.unknown_option\": true\nHint: Unknown or unsupported query option", detail: None, hint: None, position: None, where_: None, schema: None, table: None, column: None, datatype: None, constraint: None, file: None, line: None, routine: None }) }
+