Fix unable to migrate to 49 due to v49.00-059 migration (#40547)

* In #37160 we added a migration to convert all datetime columns to
timestamp with time zone by using a fixed list of what to convert. but
it turns out some customer instances has a different list. So this PR
removed the fixed list and use a query to get a list of all datetime
columns.

src/metabase/db/custom_migrations.clj

@@ -12,6 +12,7 @@
    [clojure.core.match :refer [match]]
    [clojure.java.io :as io]
    [clojure.set :as set]
+   [clojure.string :as str]
    [clojure.walk :as walk]
    [clojurewerkz.quartzite.jobs :as jobs]
    [clojurewerkz.quartzite.scheduler :as qs]
@@ -90,7 +91,15 @@
 ;; metabase.util/upper-case-en
 (defn- upper-case-en
   ^String [s]
-  (.toUpperCase (str s) Locale/US))
+  (when s
+    (.toUpperCase (str s) Locale/US)))
+
+
+;; metabase.util/lower-case-en
+(defn- lower-case-en
+  ^String [s]
+  (when s
+   (.toLowerCase (str s) Locale/US)))
 
 ;;; +----------------------------------------------------------------------------------------------------------------+
 ;;; |                                                  MIGRATIONS                                                    |
@@ -903,80 +912,30 @@
 (defn- db-type->to-unified-columns
   "Each unified column is 3 items sequence [table-name, column-name, is-nullable?]"
   [db-type]
-  (case db-type
-    :h2      [[:activity :timestamp false]
-              [:application_permissions_revision :created_at false]
-              [:collection_permission_graph_revision :created_at false]
-              [:core_session :created_at false]
-              [:core_user :date_joined false]
-              [:core_user :last_login true]
-              [:core_user :updated_at true]
-              [:dependency :created_at false]
-              [:dimension :created_at false]
-              [:dimension :updated_at false]
-              [:metabase_database :created_at false]
-              [:metabase_database :updated_at false]
-              [:metabase_field :created_at false]
-              [:metabase_field :updated_at false]
-              [:metabase_field :last_analyzed true]
-              [:metabase_fieldvalues :created_at false]
-              [:metabase_table :created_at false]
-              [:metabase_table :updated_at false]
-              [:metric :created_at false]
-              [:metric :updated_at false]
-              [:permissions_revision :created_at false]
-              [:pulse :created_at false]
-              [:pulse :updated_at false]
-              [:pulse_channel :created_at false]
-              [:pulse_channel :updated_at false]
-              [:recent_views :timestamp false]
-              [:report_card :created_at false]
-              [:report_cardfavorite :created_at false]
-              [:report_cardfavorite :updated_at false]
-              [:report_dashboard :created_at false]
-              [:report_dashboard :updated_at false]
-              [:report_dashboardcard :created_at false]
-              [:report_dashboardcard :updated_at false]
-              [:segment :created_at false]
-              [:segment :updated_at false]]
-    :mysql   [[:activity :timestamp false]
-              [:application_permissions_revision :created_at false]
-              [:collection_permission_graph_revision :created_at false]
-              [:core_session :created_at false]
-              [:core_user :date_joined false]
-              [:core_user :last_login true]
-              [:core_user :updated_at true]
-              [:dependency :created_at false]
-              [:dimension :created_at false]
-              [:dimension :updated_at false]
-              [:metabase_field :created_at false]
-              [:metabase_field :last_analyzed true]
-              [:metabase_field :updated_at false]
-              [:metabase_fieldvalues :created_at false]
-              [:metabase_table :created_at false]
-              [:metabase_table :updated_at false]
-              [:metric :created_at false]
-              [:metric :updated_at false]
-              [:permissions_revision :created_at false]
-              [:pulse :created_at false]
-              [:pulse :updated_at false]
-              [:pulse_channel :created_at false]
-              [:pulse_channel :updated_at false]
-              [:recent_views :timestamp false]
-              [:report_card :created_at false]
-              [:report_cardfavorite :created_at false]
-              [:report_cardfavorite :updated_at false]
-              [:report_dashboard :created_at false]
-              [:report_dashboard :updated_at false]
-              [:segment :created_at false]
-              [:segment :updated_at false]]
-   :postgres [[:application_permissions_revision :created_at false]
-              [:collection_permission_graph_revision :created_at false]
-              [:core_user :updated_at true]
-              [:dimension :updated_at false]
-              [:dimension :created_at false]
-              [:permissions_revision :created_at false]
-              [:recent_views :timestamp false]]))
+  (let [query (case db-type
+                :postgres {:select [:table_name :column_name :is_nullable]
+                           :from   [:information_schema.columns]
+                           :where  [:and
+                                    [:= :data_type "timestamp without time zone"]
+                                    [:= :table_schema :%current_schema]
+                                    [:= :table_catalog :%current_database]]}
+
+                :mysql    {:select [:table_name :column_name :is_nullable]
+                           :from   [:information_schema.columns]
+                           :where  [:and
+                                    [:= :data_type "datetime"]
+                                    [:= :table_schema :%database]]}
+                :h2      {:select [:table_name :column_name :is_nullable]
+                          :from   [:information_schema.columns]
+                          :where  [:= :data_type "TIMESTAMP"]})]
+    (->> (t2/query query)
+         (map #(update-vals % (comp keyword lower-case-en)))
+         (remove (fn [{:keys [table_name]}]
+                   (or (#{:databasechangelog :databasechangeloglock} table_name)
+                       ;; excludes views
+                       (str/starts-with? (name table_name) "v_"))))
+         (map #(update % :is_nullable (fn [x] (= :yes x))))
+         (map (juxt :table_name :column_name :is_nullable)))))
 
 (defn- alter-table-column-type-sql
   [db-type table column ttype nullable?]