distribution: local
vectorized: true

• root
│
├── • group (scalar)
│   │ estimated row count: 1
│   │
│   └── • scan buffer
│         estimated row count: 5,000
│         label: buffer 1 (d)
│
└── • subquery
    │ id: @S1
    │ original sql: DELETE FROM big WHERE s_id <= 50 RETURNING id
    │ exec mode: discard all rows
    │
    └── • buffer
        │ label: buffer 1 (d)
        │
        └── • delete
            │ estimated row count: 5,000
            │ from: big
            │
            └── • scan
                  estimated row count: 5,000 (50% of the table; stats collected 40 seconds ago)
                  table: big@idx_s
                  spans: [ - /50]
                  locking strength: for update
