fix: stable db migration + beta migration to stable

server/db/beta/migrations/2.0.0-beta.148.js

@@ -0,0 +1,23 @@
+/* global WIKI */
+
+exports.up = knex => {
+  const dbCompat = {
+    blobLength: (WIKI.config.db.type === `mysql` || WIKI.config.db.type === `mariadb`)
+  }
+  return knex.schema
+    .table('assetData', table => {
+      if (dbCompat.blobLength) {
+        table.dropColumn('data')
+      }
+    })
+    .table('assetData', table => {
+      if (dbCompat.blobLength) {
+        table.specificType('data', 'LONGBLOB').notNullable()
+      }
+    })
+}
+
+exports.down = knex => {
+  return knex.schema
+    .table('assetData', table => {})
+}