diff --git a/frappe/patches/v13_0/increase_password_length.py b/frappe/patches/v13_0/increase_password_length.py
index 1bb1979051..3f0e93e72c 100644
--- a/frappe/patches/v13_0/increase_password_length.py
+++ b/frappe/patches/v13_0/increase_password_length.py
@@ -1,7 +1,4 @@
 import frappe
 
 def execute():
-	frappe.db.multisql({
-		"mariadb": "ALTER  TABLE `__Auth` MODIFY `password` TEXT NOT NULL",
-		"postgres": 'ALTER TABLE "__Auth" ALTER COLUMN "password" TYPE TEXT'
-	})
+	frappe.db.sql(frappe.qb.change_table_type(tb = "__Auth",col = "password",type = "TEXT"))
diff --git a/frappe/query_builder/qb.py b/frappe/query_builder/qb.py
index d085c01027..ddf514ab2c 100644
--- a/frappe/query_builder/qb.py
+++ b/frappe/query_builder/qb.py
@@ -35,6 +35,10 @@ class MariaDB(MySQLQuery,common):
 	def DESC(dt):
 		return f"DESC `tab{dt}`"
 
+	@staticmethod
+	def change_table_type(tb, col, type):
+		return f"ALTER TABLE `{tb}` MODIFY `{col}` {type} NOT NULL"
+
 class Postgres(PostgreSQLQuery,common):
 	postgres_field = {"table_name": "relname", "table_rows": "n_tup_ins"}
 	information_schema_translation = {"tables": "pg_stat_all_tables"}
@@ -67,3 +71,7 @@ class Postgres(PostgreSQLQuery,common):
 	@staticmethod
 	def DESC(dt):
 		return f"SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_NAME = 'tab{dt}'"
+
+	@staticmethod
+	def change_table_type(tb, col, type):
+		return f'ALTER TABLE "{tb}" ALTER COLUMN "{col}" TYPE {type}'