Viewing Schema

Schema inspection helps you answer key questions fast: What columns exist? Which names are exact? What constraints are defined?

In SQLite CLI, .schema is the fastest entry point.

Core Concepts

flowchart TD
  A[Need structure details] --> B[Run .schema]
  B --> C{All objects or one table?}
  C -->|All| D[.schema]
  C -->|One table| E[.schema table_name]

Command	Use case
.schema	Show CREATE statements for all objects
.schema users	Show definition for one object

Code Examples

-- Show schema for everything in current database.
.schema

Expected output
One or more CREATE ... statements (or nothing in empty DB).

-- Show schema for a specific object name.
.schema users

Expected output
CREATE TABLE users (...) if it exists; otherwise no match output.

SQLite-Specific Nuances

SQLite Nuance

SQLite stores schema definitions as SQL text internally.

That is why .schema can print CREATE statements directly.

Common Pitfalls / Best Practices

Pitfall

Guessing column names before checking schema.

A small typo can produce confusing query errors.

Best Practice

Before writing a query on unfamiliar data, run .schema table_name first.

Quick Challenge

In any database with at least one table, run .schema and identify one exact column name you could query later.

View Solution

Example pattern:

.schema

Expected result
You can read exact object and column names directly from CREATE statements.