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Explain Time Travel in Snowflake.

SQLeasy0.4 min readPremium
Frequency
Low
Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Cognizant
Key Concepts Tested
snowflake
Expert AnswerPremium
77 wordsInterview-ready
**Architectural Logic**: Time Travel enables historical query and recovery—retention affects cost. **Mechanism**: Query at point: `AT(OFFSET => -3600)` or `AT(TIMESTAMP => '...')`. Restore: `UNDROP TABLE`. Clone: `CREATE TABLE t_clone CLONE t AT(OFFSET => -86400)`. **Retention**: 1 day default; up to 90 days for enterprise. **Use**: Debugging; recovery; historical analysis. **Scalability**: Retention period limits. **Cost**: Storage for historical data; longer retention = more cost....
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