Extract part of a string.
Use one-based positions with substr.
SELECT substr('snippet.txt', 1, 7);Expected output EXAMPLE
snippet
Details
Requires SQLite 3.40 or later. Run with sqlite3 demo.db in a scratch directory. Result rows below use | between columns, without headers; client display formatting may differ. Positive positions start at one. Negative positions count backward from the end. The verifier uses a fresh SQLite file for each example.
Tested on Ubuntu 24.04.5 LTS · · SQLite 3.45.1 · sqlite3 3.45.1-1ubuntu2.8
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Snippet process uid 65534 with a read-only root filesystem and temporary working files. Networking disabled. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged process) / C.UTF-8
- Interpreter invocation
Execute the exact SQL in a fresh database/schema; serialize result rows with | separators- Container image ID
sha256:ec91410a8f6ec3e985830b5e3a0560306d36f8c1c5ccd91a6699abe707123fa3- Code SHA-256
73277f663885ebd74f37038ac9a1440032aa1e4f832be7b006c293768320b728- Dependencies
- sqlite3 3.45.1-1ubuntu2.8
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
# No input files required.
Observed standard output
snippet
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.