Update querying-and-segmentation.md (#1983)

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MaximilianKohler 2024-08-12 01:34:48 -07:00 committed by GitHub
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@ -66,6 +66,13 @@ subscribers.email LIKE 'John%'
subscribers.email LIKE 'John%' AND status = 'blocklisted'
```
#### Querying subscribers who viewed the campaign email
```sql
-- Find all subscribers who viewed the campaign email.
EXISTS(SELECT 1 FROM campaign_views WHERE campaign_views.subscriber_id=subscribers.id AND campaign_views.campaign_id=<put_id_of_campaign>)
```
#### Querying attributes
```sql