MM-52600: [Shared Channels] Shared channels do not sync channel membership (#30976)

server/channels/db/migrations/mysql/000140_add_lastmemberssyncat_to_sharedchannelremotes.down.sql

@@ -0,0 +1,29 @@
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'SharedChannelRemotes'
+        AND table_schema = DATABASE()
+        AND column_name = 'LastMembersSyncAt'
+    ) > 0,
+    'ALTER TABLE SharedChannelRemotes DROP COLUMN LastMembersSyncAt;',
+    'SELECT 1'
+));
+
+PREPARE alterIfExists FROM @preparedStatement;
+EXECUTE alterIfExists;
+DEALLOCATE PREPARE alterIfExists;
+
+SET @preparedStatement2 = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'SharedChannelUsers'
+        AND table_schema = DATABASE()
+        AND column_name = 'LastMembershipSyncAt'
+    ) > 0,
+    'ALTER TABLE SharedChannelUsers DROP COLUMN LastMembershipSyncAt;',
+    'SELECT 1'
+));
+
+PREPARE alterIfExists2 FROM @preparedStatement2;
+EXECUTE alterIfExists2;
+DEALLOCATE PREPARE alterIfExists2;

server/channels/db/migrations/mysql/000140_add_lastmemberssyncat_to_sharedchannelremotes.up.sql

@@ -0,0 +1,29 @@
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'SharedChannelRemotes'
+        AND table_schema = DATABASE()
+        AND column_name = 'LastMembersSyncAt'
+    ) > 0,
+    'SELECT 1',
+    'ALTER TABLE SharedChannelRemotes ADD LastMembersSyncAt bigint DEFAULT 0;'
+));
+
+PREPARE alterIfNotExists FROM @preparedStatement;
+EXECUTE alterIfNotExists;
+DEALLOCATE PREPARE alterIfNotExists;
+
+SET @preparedStatement2 = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE table_name = 'SharedChannelUsers'
+        AND table_schema = DATABASE()
+        AND column_name = 'LastMembershipSyncAt'
+    ) > 0,
+    'SELECT 1',
+    'ALTER TABLE SharedChannelUsers ADD LastMembershipSyncAt bigint DEFAULT 0;'
+));
+
+PREPARE alterIfNotExists2 FROM @preparedStatement2;
+EXECUTE alterIfNotExists2;
+DEALLOCATE PREPARE alterIfNotExists2;