diff --git a/project.clj b/project.clj
index 6aa9916..ae13963 100644
--- a/project.clj
+++ b/project.clj
@@ -5,6 +5,7 @@
                  [com.widdindustries/cljc.java-time "0.1.22"]
                  [org.xerial/sqlite-jdbc "3.7.15-M1"]]
   :description "FIXME: write description"
+  :jvm-opts ["-Xmx4g"]
   :license {:name "GNU General Public License,version 2.0 or (at your option) an
 y later version"
             :url "https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html"}
diff --git a/src/gaza_stats/core.clj b/src/gaza_stats/core.clj
index 9ac610b..2415f8e 100644
--- a/src/gaza_stats/core.clj
+++ b/src/gaza_stats/core.clj
@@ -2,14 +2,15 @@
   (:require [clojure.string :refer [capitalize]]
             [cljc.java-time.local-date :as ld]
             [com.hypirion.clj-xchart :refer [xy-chart]]
-            [korma.core :refer [fields join select where]]
+            [korma.core :refer [as-sql fields join select where]]
             [korma.db :refer [defdb sqlite3]]))
 
 ;; create db
-(defdb db (sqlite3
-           {:classname   "org.sqlite.JDBC"
-            :subprotocol "sqlite"
-            :subname     "resources/app.db"}))
+(def db-spec {:classname   "org.sqlite.JDBC"
+              :subprotocol "sqlite"
+              :subname     "resources/app.db"})
+
+(defdb db (sqlite3 db-spec))
 
 (defmacro date? [x]
   `(instance? java.time.LocalDate ~x))
@@ -22,11 +23,13 @@
   returned."
   ([start-date]
    (let [sd (cond (date? start-date) start-date
-                  (string? start-date) (ld/parse start-date))]
+                  (string? start-date) (ld/parse start-date)
+                  :else (ld/parse "2024-01-01"))]
      (total-donations-by-weeks sd (ld/plus-days sd 7))))
   ([start-date end-date]
    (let [sd (cond (date? start-date) start-date
-                  (string? start-date) (ld/parse start-date))
+                  (string? start-date) (ld/parse start-date)
+                  :else (ld/parse "2024-01-01"))
          ed (cond (date? end-date) end-date
                   (string? end-date) (ld/parse end-date)
                   :else (ld/now))]
@@ -37,7 +40,7 @@
                           (fields :amount)
                           (where (and {:created_at [> s]}
                                       {:created_at [<= i]})))
-       amounts (map :amount data)
+             amounts (map :amount data)
              r' (cons
                  [s {:total (reduce + amounts)
                      :n (count data)
@@ -49,8 +52,8 @@
 
 (defmacro datetime->date [x]
   `(java.util.Date/from
-          (.toInstant (.atStartOfDay ~x)
-                      (java.time.ZoneOffset/ofHours 0))))
+    (.toInstant (.atStartOfDay ~x)
+                (java.time.ZoneOffset/ofHours 0))))
 
 (defn chart-donations-by-weeks
   "Create and return an XY chart of data on field represented by `key` of
@@ -62,7 +65,6 @@
                [(map #(datetime->date (first %)) data)
                 (map #(:n (nth % 1)) data)]})))
 
-
 (defn chart-total-donations-by-weeks
   "Create and return an XY chart of data on total donations made between
   `start-date` and `end-date`. Arguments may be supplied as
@@ -76,3 +78,54 @@
   `java.time.LocalDate` objects, or as strings in the format `yyyy-mm-dd`."
   [start-date end-date]
   (chart-donations-by-weeks start-date end-date :n))
+
+(defn enhance-account-with-donations
+  "Take this `account_map`, which must at least have a valid value for the
+  key `:campaign_url` and return a similar map including the key `:donations`,
+  whose value is a float representing the total donations received by that
+  campaign URL between the dates `sd` (exclusive) and `ed` (inclusive). Date
+  arguments should be supplied as `java.time.LocalDate` objects."
+  [account-map sd ed]
+  (assoc account-map :donations
+         (reduce + 0 (map :amount
+                          (select 'campaign_donations
+                                  (fields :amount)
+                                  (where (and
+                                          {:campaign_url [= (:campaign_url account-map)]}
+                                          {:created_at [> sd]}
+                                          {:created_at [<= ed]})))))))
+
+(defn accounts-with-donations-by-date-range
+  "Return a list of maps, each representing one account from the `gaza.onl`
+  database, with a key `:donations`, whose value is a float representing the
+  total donations received by that account between the dates `start-date`
+  (exclusive) and `end-date` (inclusive). Date arguments should be supplied
+  as `java.time.LocalDate` objects, or as strings in the format `yyyy-mm-dd`."
+  [start-date end-date]
+  (let [sd (cond (date? start-date) start-date
+                 (string? start-date) (ld/parse start-date))
+        ed (cond (date? end-date) end-date
+                 (string? end-date) (ld/parse end-date)
+                 :else (ld/now))
+        accounts (select 'accounts
+                         (fields :id :display_name :created_at :campaign_url)
+                         (where {:created_at [< sd]}))]
+    (map #(enhance-account-with-donations % sd ed) accounts)))
+
+(defn chart-donations-by-accounts-in-date-range
+  "Return a chart of donations received by individual accounts between
+  `start-date` (exclusive) and `end-date` (inclusive). Arguments should be
+  supplied as `java.time.LocalDate` objects, or as strings in the format
+  `yyyy-mm-dd`. Accounts are identified in the chart only by rank order."
+  [start-date end-date]
+  (let [data (accounts-with-donations-by-date-range start-date end-date)]
+    (xy-chart {(format "Donations between\n%s and\n%s" start-date end-date)
+               [(range (count data)) (sort (map :donations data))]})))
+
+;; this does not work and I don't know why
+;; (as-sql '(select 'campaign_donations
+;;                  (fields :amount :campaign_url :created_at)
+;;                  (where (and
+;;                          {:campaign_url [= "https://www.chuffed.org/project/128261-photographer-from-gaza-rebuilding-life-dreams"]}
+;;                          {:created_at [> "2024-04-01"]}
+;;                          {:created_at [<= "2o24-04-30"]}))))