Create 2024-06-25 - import a list of json files.pq

Author: ninmonkey

forumQuestions/pq/2024-06-25 - import a list of json files.pq

@@ -0,0 +1,44 @@
+let
+    /*
+        about: this creates example json files inline, without requiring files to exist
+        source: <https://github.com/ninmonkey/ninMonkQuery-examples/new/main/forumQuestions/pq/2024-06-25 - import a list of json files.pq>
+    */
+    Source = 
+        let 
+            FakeJson1 = { 
+                [ name = "Jen", id = 2222 ],
+                [ name = "Stan", id = 1111 ]
+            },
+            FakeJson2 = { 
+                [ region = "West",  color = "blue"],
+                [ region = "South", color = "salmon" ]
+            },
+            FakeFiles = {
+                [ filename = "employees.json", Content = Json.FromValue( FakeJson1 ) ],
+                [ filename = "region.json", Content = Json.FromValue( FakeJson2 ) ],
+                [ filename = "shouldFail.json", Content = null ]
+            }
+        in 
+            Table.FromRecords( FakeFiles, type table [ filename = text, Content = binary ] ) ,
+
+    // real code starts here. 
+    Column_ConvertJson = Table.AddColumn(
+        Source,
+        "Json",        
+        (row) => [            
+            // I threw in extra record fields to make errors easier to read
+            // you only need the field "Table"
+            JsonList    = Json.Document( row[Content] ),
+            Table       = Table.FromRecords( JsonList ),
+            HasError    = (try Table)[HasError]
+        ],
+        type [ JsonList = list, Table = Table.Type, HasError = logical ]
+    ),
+    #"Expanded Json" = Table.ExpandRecordColumn(Column_ConvertJson, 
+        "Json", 
+        {"Table", "HasError" }, 
+        {"Table", "HasError" } )
+
+    // now you have an array of json tables 
+in
+    #"Expanded Json"