From a7c9ea3394cc8604e8ac2baeb927d50b701f2606 Mon Sep 17 00:00:00 2001
From: Pjotr Prins
Date: Sun, 20 Aug 2023 11:36:39 +0200
Subject: SPARQL count datasets

---
 api/sparql-endpoint.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'api/sparql-endpoint.md')

diff --git a/api/sparql-endpoint.md b/api/sparql-endpoint.md
index d0f1fdb..0b04c6b 100644
--- a/api/sparql-endpoint.md
+++ b/api/sparql-endpoint.md
@@ -104,6 +104,25 @@ Another way to list datasets with the name that is used in GN:
           }
 ```
 
+To list all datasets
+
+```
+        SELECT DISTINCT  ?dataset ?datasetName WHERE {
+            ?dataset rdf:type/rdfs:subClassOf gnc:dataset .
+            ?dataset rdfs:label ?datasetName .
+
+          }
+```
+
+And count them!
+
+```
+        SELECT count(?dataset) WHERE {
+            ?dataset rdf:type/rdfs:subClassOf gnc:dataset .
+          }
+```
+
+893 at last count(!)
 
 - info_dataset("CB_M_1004_P") - Get meta information about a data set using the GN name:
 
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