diff --git a/backupdr/backup_plan/main.tf b/backupdr/backup_plan/main.tf
index 1ea38877..32db16a3 100644
--- a/backupdr/backup_plan/main.tf
+++ b/backupdr/backup_plan/main.tf
@@ -48,6 +48,7 @@ resource "google_backup_dr_backup_plan" "default" {
   backup_plan_id = "my-bp"
   resource_type  = "compute.googleapis.com/Instance"
   backup_vault   = google_backup_dr_backup_vault.default.name
+  # log_retention_days = 2 # Only applicable for Cloud SQL
 
   backup_rules {
     rule_id               = "rule-1"
diff --git a/backupdr/backup_plan_association/main.tf b/backupdr/backup_plan_association/main.tf
index 667414ec..b7576557 100644
--- a/backupdr/backup_plan_association/main.tf
+++ b/backupdr/backup_plan_association/main.tf
@@ -59,6 +59,24 @@ resource "google_compute_disk" "default" {
   zone = "us-central1-a"
 }
 
+resource "google_sql_database_instance" "default" {
+  name             = "instance-test"
+  database_version = "MYSQL_8_0_41"
+  region           = "us-central1"
+  settings {
+    tier = "db-f1-micro"
+    backup_configuration {
+      enabled = true
+    }
+  }
+  lifecycle {
+    ignore_changes = [
+      settings[0].backup_configuration[0].enabled,
+    ]
+  }
+  deletion_protection = false
+}
+
 resource "google_backup_dr_backup_vault" "default" {
   provider                                   = google-beta
   location                                   = "us-central1"
@@ -129,6 +147,31 @@ resource "google_backup_dr_backup_plan" "disk_default" {
   }
 }
 
+resource "google_backup_dr_backup_plan" "csql_default" {
+  provider           = google-beta
+  location           = "us-central1"
+  backup_plan_id     = "my-csql-bp"
+  resource_type      = "sqladmin.googleapis.com/Instance"
+  backup_vault       = google_backup_dr_backup_vault.default.name
+  log_retention_days = 2
+
+  backup_rules {
+    rule_id               = "rule-1"
+    backup_retention_days = 7
+
+    standard_schedule {
+      recurrence_type  = "HOURLY"
+      hourly_frequency = 6
+      time_zone        = "UTC"
+
+      backup_window {
+        start_hour_of_day = 0
+        end_hour_of_day   = 23
+      }
+    }
+  }
+}
+
 # [START backupdr_create_backupplanassociation]
 
 # Before creating a backup plan association, you need to create backup plan (google_backup_dr_backup_plan)
@@ -158,3 +201,18 @@ resource "google_backup_dr_backup_plan_association" "disk_association" {
 }
 
 # [END backupdr_create_backupplanassociation_disk]
+
+# [START backupdr_create_backupplanassociation_csql]
+
+# Before creating a backup plan association, you need to create backup plan (google_backup_dr_backup_plan)
+# and Cloud SQL Instance (google_sql_database_instance).
+resource "google_backup_dr_backup_plan_association" "csql_association" {
+  provider                   = google-beta
+  location                   = "us-central1"
+  backup_plan_association_id = "my-csql-bpa"
+  resource                   = "projects/${google_sql_database_instance.default.project}/instances/${google_sql_database_instance.default.name}"
+  resource_type              = "sqladmin.googleapis.com/Instance"
+  backup_plan                = google_backup_dr_backup_plan.csql_default.name
+}
+
+# [END backupdr_create_backupplanassociation_csql]