TD Time Filtering - Advanced Patterns

td_interval Offset Date Syntax

Reference date can be absolute, relative, or now:

-- Absolute reference date
where td_interval(time, '-1d/2025-10-01')       -- Yesterday relative to Oct 1
where td_interval(time, '-7d/2025-10-01', 'JST')

-- Relative reference date
where td_interval(time, '-1d/-7d')              -- Yesterday relative to 7 days ago
where td_interval(time, '-7d/-1d')              -- Last 7 days from yesterday

-- now keyword
where td_interval(time, '-1d/now')              -- Yesterday until now
where td_interval(time, '0d/now')               -- Beginning of today until now
where td_interval(time, '0M/now')               -- Beginning of this month until now
where td_interval(time, '0y/now')               -- Beginning of this year until now

-- Combined patterns
where td_interval(time, '-7d/0M')               -- Last 7 days from month start
where td_interval(time, '0M/-7d')               -- This month up to 7 days ago

Interval Units

s=seconds, m=minutes, h=hours, d=days, w=weeks, M=months, q=quarters, y=years

tdintervalrange for Debugging

select td_interval_range('-7d', 'UTC')              -- Returns [start, end] timestamps
select td_interval_range('-1d/2025-10-01', 'JST')   -- Check offset date range
select td_interval_range('0M/now', 'JST')           -- Verify month-to-date range

tdtimestring for Display

select td_time_string(time, 'd!')              -- 2025-01-15 (UTC)
select td_time_string(time, 'd!', 'JST')       -- 2025-01-15 (JST)
select td_time_string(time, 'M!', 'JST')       -- 2025-01
select td_time_string(time, 'h!', 'JST')       -- 2025-01-15 10

Codes: y! q! M! w! d! h! m! s!. Timezone optional (defaults to UTC). Use for display/grouping only, not filtering.

tdscheduledtime Reference

In workflows, include tdscheduledtime() to establish reference time:

select td_scheduled_time(), *
from mydb.events
where td_interval(time, '-1d', 'JST')

Partition Pruning Gotchas

-- BAD: Functions on time prevent pruning
where date(from_unixtime(time)) = '2025-01-15'

-- GOOD: Use td_time_range
where td_time_range(time, '2025-01-15', '2025-01-16')

-- BAD: Raw timestamp comparison
where time > 1704067200

-- GOOD: Use td_interval
where td_interval(time, '-7d')

-- BAD: Different column
where created_at > current_date - interval '7' day

-- GOOD: Use time column
where td_interval(time, '-7d')

Troubleshooting Empty Results

-- Check data range
select min(time), max(time) from mydb.events

-- Try different timezones
select count(*) from mydb.events where td_interval(time, '-1d')        -- UTC
select count(*) from mydb.events where td_interval(time, '-1d', 'JST') -- JST

Resources

• https://api-docs.treasuredata.com/en/tools/presto/api#td_interval