analytics/list-partitions.sql.eex at f635f0a6d3b9b04c0e15ebd3bd1670767503e3a7 - analytics - gitea: Gitea Service

plausible/analytics

mirror of https://github.com/plausible/analytics.git synced 2024-12-25 02:24:55 +03:00

Karl-Aksel Puulmann 8ba2b934b3

Add data migration for moving sessions_v2 table to VersionedCollapsingMergeTree (#3802 )

* Add data migration for moving to VersionedCollapsingMergeTree

This has been tested locally and partially on staging. Still requires a bit of work to verify.

Verification query:

```
SELECT main._partition_id, tmp.count, main.count
FROM (
SELECT _partition_id, count() AS count
FROM sessions_v2_tmp_versioned
GROUP BY _partition_id
) AS tmp
FULL OUTER JOIN (
SELECT _partition_id, count() AS count
FROM sessions_v2
GROUP BY _partition_id
) AS main
ON (tmp._partition_id == main._partition_id)
ORDER BY main._partition_id
```

* Add an early exit to migration

* cluster? extract common code

2024-02-22 09:54:39 +02:00

6 lines

127 B

Elixir

Raw Blame History

 SELECT distinct(partition)
 FROM system.parts
 WHERE database = currentDatabase()
   AND table = 'sessions_v2'
 ORDER BY partition