--- Revision 323031643164
+++ Revision 333538336461
@@ -1,20 +1,23 @@
-// MAP
-function(doc) {
-	if (doc.type && doc.type == 'transaction') {
-		if (doc.category) emit(doc.category);
-		if (doc.split) doc.split.map(function(spl) {
-			if (spl.category) emit(spl.category);
-		});
-	}
+// I am creating an accounting app; the transactions are stored using the following doc:
+
+{
+   "_id": "405b791b64424d12e03c12e6e5001535",
+   "_rev": "1-97d53ba31a6ebb8c0508d0fc8776fac5",
+   "type": "transaction",
+   "account": "account_id",
+   "payee": "Gas Company",
+   "description": "May Bill",
+   "date": "2009/05/25",
+   "status": "cleared",
+   "category": "Bills / Gas",
+   "value": -5000
 }
 
-// REDUCE
-function(keys, values, rereduce) {
-	return true;
-}
+// Or they can be split acroll multiple accounts / categories / etc. In this case split over two categories:
 
-// SAMPLE DOC
 {
+   "_id": "405b791b64424d12e03c12e6e5002532",
+   "_rev": "1-da46384d5f9fbfd26acbf8fc9a8e82fe",
    "type": "transaction",
    "account": "account_id",
    "payee": "Credit Card Company",
@@ -31,6 +34,23 @@
    ]
 }
 
+// I have made a view to display all the unique categories in use across all transactions.
+
+// MAP
+function (doc) {
+    if (doc.type && doc.type == 'transaction') {
+        if (doc.category) emit(doc.category);
+        if (doc.split) doc.split.map(function (spl) {
+            if (spl.category) emit(spl.category);
+        });
+    }
+}
+
+// REDUCE
+function(keys, values, rereduce) {
+    return true;
+}
+
 // CURRENT OUTPUT OF VIEW (with group=true)
 {
 	"rows": [
@@ -45,7 +65,7 @@
 	]
 }
 
-// CURRENT OUTPUT OF VIEW (as temp view)
+// CURRENT OUTPUT OF VIEW WHEN RUN AS A TEMPORARY VIEW (with group=true)
 {
 	"rows": [
 		{
@@ -62,81 +82,13 @@
 		}
 	]
 }
-// SIMPLIFIED VIEW
-function(doc) {
-	if (doc.type && doc.type == 'transaction') {
-		emit(null,doc);
-	}
+
+// SIMPLE TEST VIEW
+function (doc) {
+    if (doc.split) emit(null, doc.split);
 }
 
-// OUTPUT
-{
-	"total_rows": 2, 
-	"offset": 0, 
-	"rows": [
-		{
-			"id": "405b791b64424d12e03c12e6e5001535", 
-			"key": null, 
-			"value": {
-				"_id": "405b791b64424d12e03c12e6e5001535", 
-				"_rev": "1-97d53ba31a6ebb8c0508d0fc8776fac5", 
-				"type": "transaction", 
-				"account": "account_id", 
-				"payee": "Gas Company", 
-				"description": "May Bill", 
-				"date": "2009/05/25", 
-				"status": "cleared", 
-				"category": "Bills / Gas", 
-				"value": -5000
-			}
-		}, 
-		{
-			"id": "405b791b64424d12e03c12e6e5002532", 
-			"key": null, 
-			"value": {
-				"_id": "405b791b64424d12e03c12e6e5002532", 
-				"_rev": "1-da46384d5f9fbfd26acbf8fc9a8e82fe", 
-				"type": "transaction", 
-				"account": "account_id", 
-				"payee": "Credit Card Company", 
-				"description": "May Statement", 
-				"date": "2009/06/02", 
-				"status": "uncleared", 
-				"category": "Debt / Credit Card Payments", 
-				"value": -5000, 
-				"split": [
-				]
-			}
-		}
-	]
-}
-
-// OUTPUT OF DOC
-{
-	"_id": "405b791b64424d12e03c12e6e5002532", 
-	"_rev": "1-da46384d5f9fbfd26acbf8fc9a8e82fe", 
-	"type": "transaction", 
-	"account": "account_id", 
-	"payee": "Credit Card Company", 
-	"description": "May Statement", 
-	"date": "2009/06/02", 
-	"status": "uncleared", 
-	"category": "Debt / Credit Card Payments", 
-	"value": -5000, 
-	"split": [
-		{
-			"category": "Dept / Default Charges", 
-			"value": -1000
-		}
-	]
-}
-
-// TEST VIEW
-function(doc) {
-	if (doc.split) emit(null,doc.split);
-}
-
-// OUTPUT OF TEMP VIEW
+OUTPUT OF TEMP VIEW
 {
 	"total_rows": 1, 
 	"offset": 0, 
@@ -154,7 +106,7 @@
 	]
 }
 
-//OUTPUT OF SAME VIEW AFTER SAVE
+OUTPUT OF SAME VIEW AFTER SAVE
 {
 	"total_rows": 1, 
 	"offset": 0, 
@@ -167,3 +119,11 @@
 		}
 	]
 }
+
+It seems from the above that couch is for some reason returning the splits field as an empty array.
+
+Thanks for your time on IRC already.
+
+Cheers
+
+John