SELECT block_timestamp::date as date,
CASE
WHEN date < '2023-01-14' THEN 'Before Station Announcement'
ELSE 'After Station Announcement' END as time_label,
COUNT(DISTINCT tx_id) as txs
FROM terra.core.ez_staking
WHERE date BETWEEN '2023-01-01' and '2023-01-21'
GROUP BY 1