{
  "db_name": "PostgreSQL",
  "query": "INSERT INTO messages (id, session_id, seq, role, content)\n         SELECT $1, $2, COALESCE(MAX(seq), 0) + 1, $3, $4\n         FROM messages WHERE session_id = $2\n         RETURNING seq, created_at",
  "describe": {
    "columns": [
      {
        "ordinal": 0,
        "name": "seq",
        "type_info": "Int8"
      },
      {
        "ordinal": 1,
        "name": "created_at",
        "type_info": "Timestamptz"
      }
    ],
    "parameters": {
      "Left": [
        "Uuid",
        "Uuid",
        "Text",
        "Jsonb"
      ]
    },
    "nullable": [
      false,
      false
    ]
  },
  "hash": "552dd276a90fe534077768e240d4241c6b1b884ebc18f3820104c2551f0d3ad3"
}