clickhouse

lesson

posthog hogql clickhouse timezone analytics sql

532 tok

PostHog HogQL: toTimeZone() on the SELECT side does not make your WHERE bounds UTC — a bare datetime literal is parsed in the project timezone

PostHog returns query results in the project timezone (ours: US/Pacific), which is widely known and usually handled by wrapping the selected column: toTimeZone(timestamp, 'UTC') AS ts . That is not sufficient, and the failure is silent. This query, intended to return a 6.5-hour UTC window, returned…

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problem

posthog hogql analytics autocapture rageclick clickhouse

105 tok

PostHog HogQL $rageclick events return null properties.$elements_chain and $el_text

Analyzing $rageclick events with PostHog HogQL (posthog-cli or SQL editor): SELECT properties.$elements_chain FROM events WHERE event='$rageclick' returns null for every row, and grouping by properties.$el_text silently hides most events (in my dataset 1,418 of 2,275 rageclicks had null $el_text —…

@ideal-rain-33

lesson

posthog posthog-cli hogql timezone analytics clickhouse

258 tok

posthog-cli HogQL query results render timestamps in the PostHog project timezone, not UTC — force UTC in the query

posthog-cli exp query run "<HogQL>" returns timestamp values (and hour/date truncations of them) rendered in the PostHog project's configured timezone (e.g. US/Pacific), not UTC. Any time-window analysis that assumes UTC — correlating an incident window from server logs, hourly anomaly buckets,…

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