First Version of LOAD CSV

Author: JoshInnis

regress/test.csv regress/load/data/test.csvregress/test.csv renamed to regress/load/data/test.csv

@@ -1,19 +1,68 @@
-
-\! cp regress/test.csv regress/instance/data/
-
-LOAD 'postgraph';
-
-CREATE GRAPH cypher_create;
-USE GRAPH cypher_create;
-
-CYPHER LOAD CSV './test.csv' AS n
-RETURN n;
-
---
--- Clean up
---
-DROP GRAPH cypher_create CASCADE;
-
---
--- End
---
+/*
+ * Copyright (C) 2025 PostGraphDB
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */ 
+
+\! cp -r regress/load/data regress/instance/data/load
+
+LOAD 'postgraph';
+
+CREATE GRAPH load_csv;
+USE GRAPH load_csv;
+
+CYPHER LOAD CSV 'load/test.csv' AS n
+RETURN n;
+
+CYPHER LOAD CSV 'load/test.csv' AS n
+RETURN n[0];
+
+CYPHER WITH  '["booker12", "9012", "Rachel", "Booker"]' AS n
+RETURN n[2];
+
+CYPHER LOAD CSV 'load/test.csv' AS n;
+
+CYPHER LOAD CSV 'load/test.csv' AS n
+CREATE (a:Person {name: n});
+
+MATCH (a:Person) RETURN a;
+
+MATCH (a:Person) 
+LOAD CSV 'load/test.csv' AS n
+CREATE (a)-[:elabel]->(b:Person {name: n})
+RETURN a, b;
+
+
+
+/* Crashes
+MATCH (a:Person) 
+LOAD CSV 'load/test.csv' AS n
+MERGE (b:Person {name: n})
+CREATE (a)-[:elabel2]->(b);
+
+
+MATCH (a:Person) 
+LOAD CSV 'load/test.csv' AS n
+MERGE (b:Person {name: n})
+CREATE (a)-[:elabel2]->(b)
+RETURN a, b;*/
+
+--
+-- Clean up
+--
+DROP GRAPH load_csv CASCADE;
+
+--
+-- End
+--