should be it

external/duckdb/test/sql/explain/test_explain.test

@@ -0,0 +1,47 @@
+# name: test/sql/explain/test_explain.test
+# description: Test explain
+# group: [explain]
+
+statement ok
+PRAGMA enable_verification
+
+statement ok
+CREATE TABLE integers(i INTEGER, j INTEGER)
+
+statement ok
+INSERT INTO integers VALUES (1, 1), (2, 2), (3, 3), (NULL, NULL)
+
+statement ok
+EXPLAIN SELECT * FROM integers
+
+statement ok
+EXPLAIN select sum(i), j, sum(i), j from integers group by j having j < 10;
+
+statement ok
+EXPLAIN update integers set i=i+1;
+
+statement ok
+EXPLAIN delete from integers where i=1;
+
+statement ok
+pragma explain_output='optimized_only'
+
+query II
+EXPLAIN (FORMAT JSON) SELECT SUM(i) FROM (SELECT * FROM integers i1, integers i2 UNION ALL SELECT * FROM integers i1, integers i2);
+----
+logical_opt	<REGEX>:.*"name": "CROSS_PRODUCT".*
+
+query II
+EXPLAIN (FORMAT HTML) SELECT SUM(i) FROM (SELECT * FROM integers i1, integers i2 UNION ALL SELECT * FROM integers i1, integers i2);
+----
+logical_opt	<REGEX>:.*<div class="title">CROSS_PRODUCT</div>.*
+
+query II
+EXPLAIN (FORMAT GRAPHVIZ) SELECT SUM(i) FROM (SELECT * FROM integers i1, integers i2 UNION ALL SELECT * FROM integers i1, integers i2);
+----
+logical_opt	<REGEX>:.*node_0_0 -> node_0_1;.*
+
+query II
+EXPLAIN (FORMAT YAML) SELECT SUM(i) FROM (SELECT * FROM integers i1, integers i2 UNION ALL SELECT * FROM integers i1, integers i2);
+----
+logical_opt	<REGEX>:.*- name: "CROSS_PRODUCT".*