diff --git a/doc/src/sgml/ref/explain.sgml b/doc/src/sgml/ref/explain.sgml
index cf4aa8f762..044aba71a8 100644
--- a/doc/src/sgml/ref/explain.sgml
+++ b/doc/src/sgml/ref/explain.sgml
@@ -1,5 +1,5 @@
@@ -247,6 +247,29 @@ EXPLAIN SELECT * FROM foo;
+
+ Here is the same query, with JSON formatting:
+
+EXPLAIN (FORMAT JSON) SELECT * FROM foo;
+ QUERY PLAN
+--------------------------------
+ [ +
+ { +
+ "Plan": { +
+ "Node Type": "Seq Scan",+
+ "Relation Name": "foo", +
+ "Alias": "foo", +
+ "Startup Cost": 0.00, +
+ "Total Cost": 155.00, +
+ "Plan Rows": 10000, +
+ "Plan Width": 4 +
+ } +
+ } +
+ ]
+(1 row)
+
+
+
If there is an index and we use a query with an indexable
WHERE condition, EXPLAIN
@@ -263,6 +286,28 @@ EXPLAIN SELECT * FROM foo WHERE i = 4;
+
+ Here is the same query, but in YAML output:
+
+EXPLAIN (FORMAT YAML) SELECT * FROM foo WHERE i='4';
+ QUERY PLAN
+-------------------------------
+ - Plan: +
+ Node Type: "Index Scan" +
+ Scan Direction: "Forward"+
+ Index Name: "fi" +
+ Relation Name: "foo" +
+ Alias: "foo" +
+ Startup Cost: 0.00 +
+ Total Cost: 5.98 +
+ Plan Rows: 1 +
+ Plan Width: 4 +
+ Index Cond: "(i = 4)"
+(1 row)
+
+
+ XML output is left as an exercise to the reader.
+
Here is the same plan with costs suppressed: