What does a DEFAULT constraint do during INSERT?

Problem Statement

Explanation

DEFAULT supplies a value when the insert omits that column. It does not run if you pass an explicit value, including NULL. Combine NOT NULL with DEFAULT for robust domain rules.

Code Solution

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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP

Practice Sets

This question appears in the following practice sets:

Constraints, Keys & Data Integrity

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What does a DEFAULT constraint do during INSERT?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

What does a DEFAULT constraint do during INSERT?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime