> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/es/web/sql-injection/time-based-blind-sql-injection.md).
# Inyección SQL ciega basada en tiempo
### Inyección SQL ciega con retrasos de tiempo
**Antecedentes:** el valor de la `TrackingId` la cookie se inserta en una solicitud SQL ejecutada **sincrónicamente**. La respuesta HTTP no indica directamente el resultado de la consulta, pero podemos provocar **tiempo condicional** (sleep) para deducir información (inyección SQL ciega basada en tiempo).
#### Cargas útiles proporcionadas (para colocarse después de la parte legítima de la cookie, p. ej. `TrackingId=' -- -`)
* **MySQL** :
```
' AND SLEEP(10)-- -
```
* **PostgreSQL** :
```
' || pg_sleep(10)-- -
```
> Ejemplo concreto (cookie):/ `TrackingId=abc123' AND SLEEP(10)-- -` (MySQL)
---
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