diff --git a/docs/how-to/query-options.md b/docs/how-to/query-options.md
index 3c2eac20de3..34a8ac4a190 100644
--- a/docs/how-to/query-options.md
+++ b/docs/how-to/query-options.md
@@ -23,7 +23,8 @@ SHOW VARIABLES query.allow_query_fallback;
 SET datafusion.optimizer.repartition_joins = false;
 ```
 
-`SHOW VARIABLES <option>` shows the effective value. Boolean values must be
+`SHOW VARIABLES <option>` shows the effective value. PostgreSQL also accepts
+`SET query.parallelism TO 4` and `SHOW query.parallelism`. Boolean values must be
 `true` or `false`. Unknown, unsupported, and non-allowlisted DataFusion options
 are rejected; arbitrary DataFusion configuration is not enabled.