Drop not-null constraint on UserUpdateHistory:user_id (#2513)

This is nullable now that we're switching from using an ID field to
using the email address as the primary identifier.

db/src/main/resources/sql/er_diagram/brief_er_diagram.html

@@ -261,11 +261,11 @@ td.section {
     </tr>
     <tr>
      <td class="property_name">generated on</td>
-     <td class="property_value">2024-07-25 18:42:06</td>
+     <td class="property_value">2024-07-30 18:27:56</td>
     </tr>
     <tr>
      <td class="property_name">last flyway file</td>
-     <td id="lastFlywayFile" class="property_value">V174__user_pkey.sql</td>
+     <td id="lastFlywayFile" class="property_value">V175__user_update_history_id.sql</td>
     </tr>
    </tbody>
   </table>
@@ -280,7 +280,7 @@ td.section {
     <text text-anchor="start" x="3795" y="-29.8" font-family="Helvetica,sans-Serif" font-size="14.00">generated by</text>
     <text text-anchor="start" x="3878" y="-29.8" font-family="Helvetica,sans-Serif" font-size="14.00">SchemaCrawler 16.21.4</text>
     <text text-anchor="start" x="3794" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">generated on</text>
-    <text text-anchor="start" x="3878" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">2024-07-25 18:42:06</text>
+    <text text-anchor="start" x="3878" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">2024-07-30 18:27:56</text>
     <polygon fill="none" stroke="#888888" points="3791,-4 3791,-44 4027,-44 4027,-4 3791,-4" /> <!-- allocationtoken_a08ccbef -->
     <g id="node1" class="node">
      <title>

db/src/main/resources/sql/er_diagram/full_er_diagram.html

@@ -261,11 +261,11 @@ td.section {
     </tr>
     <tr>
      <td class="property_name">generated on</td>
-     <td class="property_value">2024-07-25 18:42:05</td>
+     <td class="property_value">2024-07-30 18:27:55</td>
     </tr>
     <tr>
      <td class="property_name">last flyway file</td>
-     <td id="lastFlywayFile" class="property_value">V174__user_pkey.sql</td>
+     <td id="lastFlywayFile" class="property_value">V175__user_update_history_id.sql</td>
     </tr>
    </tbody>
   </table>
@@ -280,7 +280,7 @@ td.section {
     <text text-anchor="start" x="4494" y="-29.8" font-family="Helvetica,sans-Serif" font-size="14.00">generated by</text>
     <text text-anchor="start" x="4577" y="-29.8" font-family="Helvetica,sans-Serif" font-size="14.00">SchemaCrawler 16.21.4</text>
     <text text-anchor="start" x="4493" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">generated on</text>
-    <text text-anchor="start" x="4577" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">2024-07-25 18:42:05</text>
+    <text text-anchor="start" x="4577" y="-10.8" font-family="Helvetica,sans-Serif" font-size="14.00">2024-07-30 18:27:55</text>
     <polygon fill="none" stroke="#888888" points="4490,-4 4490,-44 4726,-44 4726,-4 4490,-4" /> <!-- allocationtoken_a08ccbef -->
     <g id="node1" class="node">
      <title>
@@ -4065,7 +4065,7 @@ td.section {
      <text text-anchor="start" x="1594" y="-485.3" font-family="Helvetica,sans-Serif" font-size="14.00">text not null</text>
      <text text-anchor="start" x="1404" y="-466.3" font-family="Helvetica,sans-Serif" font-size="14.00">user_id</text>
      <text text-anchor="start" x="1586" y="-466.3" font-family="Helvetica,sans-Serif" font-size="14.00"> </text>
-     <text text-anchor="start" x="1594" y="-466.3" font-family="Helvetica,sans-Serif" font-size="14.00">int8 not null</text>
+     <text text-anchor="start" x="1594" y="-466.3" font-family="Helvetica,sans-Serif" font-size="14.00">int8</text>
      <text text-anchor="start" x="1404" y="-447.3" font-family="Helvetica,sans-Serif" font-size="14.00">email_address</text>
      <text text-anchor="start" x="1586" y="-447.3" font-family="Helvetica,sans-Serif" font-size="14.00"> </text>
      <text text-anchor="start" x="1594" y="-447.3" font-family="Helvetica,sans-Serif" font-size="14.00">text not null</text>
@@ -13316,7 +13316,7 @@ td.section {
     <tr>
      <td class="spacer"></td>
      <td class="minwidth">user_id</td>
-     <td class="minwidth">int8 not null</td>
+     <td class="minwidth">int8</td>
     </tr>
     <tr>
      <td class="spacer"></td>

db/src/main/resources/sql/flyway.txt

@@ -172,3 +172,4 @@ V171__drop_create_billing_cost_columns_from_tld.sql
 V172__allocation_token_renewal_price.sql
 V173__create_feature_flag_table.sql
 V174__user_pkey.sql
+V175__user_update_history_id.sql

db/src/main/resources/sql/flyway/V175__user_update_history_id.sql

@@ -0,0 +1,15 @@
+-- Copyright 2024 The Nomulus Authors. All Rights Reserved.
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+ALTER TABLE "UserUpdateHistory" ALTER COLUMN user_id DROP NOT NULL;

db/src/main/resources/sql/schema/nomulus.golden.sql

@@ -1340,7 +1340,7 @@ CREATE TABLE public."UserUpdateHistory" (
     history_request_body text,
     history_type text NOT NULL,
     history_url text NOT NULL,
-    user_id bigint NOT NULL,
+    user_id bigint,
     email_address text NOT NULL,
     registry_lock_password_hash text,
     registry_lock_password_salt text,