// to see if Seek is really supported.
		pos1, err := sr.Seek(0, io.SeekCurrent)
		if pos1 >= 0 && err == nil {
			// Seek seems supported, so perform the real Seek.
			pos2, err := sr.Seek(n-1, io.SeekCurrent)
			if pos2 < 0 || err != nil {
				return err
			}
			seekSkipped = pos2 - pos1
		}
	}

	copySkipped, err := io.CopyN(io.Discard, r, n-seekSkipped)

	tval1, err := d.Timestamp1.evalNode(r, tableAlias)
	if err != nil {
		return nil, err
	}
	if err = inferTypeAsTimestamp(tval1); err != nil {
		return nil, err
	}
	ts1, ok := tval1.ToTimestamp()
	if !ok {
		return nil, fmt.Errorf("%s() expects two timestamp arguments", sqlFnDateDiff)
	}

	tval2, err := d.Timestamp2.evalNode(r, tableAlias)
	if err != nil {
		return nil, err

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

Или если вы используете Bash для Windows (например, <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>):

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

Oder wenn Sie Bash für Windows verwenden (z. B. <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>):

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

Or if you use Bash for Windows (e.g. <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>):

<div class="termy">

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

Ou se você usa o Bash para Windows (por exemplo, <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>):

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

O si usas Bash para Windows (por ejemplo, <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>):

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

或者，如果你在 Windows 上使用 Bash（例如 <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>）：

<div class="termy">

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

或者，如果你在 Windows 上使用 Bash（例如 <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>）：

<div class="termy">

<div class="termy">

```console
$ source .venv/bin/activate
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console
$ .venv\Scripts\Activate.ps1
```

</div>

////

//// tab | Windows Bash

Windows에서 Bash(예: <a href="https://gitforwindows.org/" class="external-link" target="_blank">Git Bash</a>)를 사용하는 경우:

<div class="termy">