boluor opened a new pull request, #3839:
URL: https://github.com/apache/doris-website/pull/3839
## Summary
Careful bidirectional sync for three pages where EN and ZH had each grown
distinct non-redundant examples. Each addition was verified end-to-end against
Doris 4.1.1; expected outputs are pasted from the cluster, not transcribed.
### `trim.md`
- **EN ← ZH**: add example 9 — UTF-8 string with a UTF-8 trim pattern.
Demonstrates that `trim('ṭṛì ḍḍumai+++', 'ṭṛì')` strips only the leading `ṭṛì`
(trailing `+++` doesn't match the pattern so trim stops there). EN previously
had only a default-space UTF-8 example.
- **ZH ← EN**: add examples 8/9/10 — no-match returns original,
repeated-pattern strips until exhausted, and asymmetric removal (multi-char
pattern from both ends). EN had these corner cases as 4/7/8; ZH didn't.
- **ZH fix**: trailing `;;` (double semicolon) on example 7 → single `;`.
### `field.md`
- **EN ← ZH**: extend the `class_test` setup with a `NULL` row, then add two
examples that exercise NULL handling under FIELD-based custom ordering — DESC
variant (NULL ends up last because FIELD = 0) and NULLS FIRST (NULL placement
independent of sort direction). Updated the existing ASC example's expected
output to include the NULL row that the new setup row produces.
- **ZH ← EN**: add the simple `SELECT FIELD(2, 3, 1, 2, 5)` example that
introduces the 1-based position semantics before the ORDER BY use case.
### `substring.md`
- **EN ← ZH**: add example 12 — `substring(NULL, 1, 3)` (NULL passed to the
function directly; the `MID` alias variant was already example 8).
- **ZH ← EN**: add example 12 — `SUBSTR('Hello World', 7, 5)` showing the
SUBSTR alias.
## Scope note
Two other P1-both-extra pages remain intentionally not in this PR:
- `strright.md` — EN and ZH are already at parity; the only diff is a
cosmetic "syntax block lists the RIGHT alias twice" formatting difference. Not
worth a doc change.
- `array-count.md` — EN and ZH each have substantially different example
sets covering the same teaching points with different idioms (e.g. EN uses
`size(array_filter(...)) > 0` to show the "wrap inner higher-order in a scalar"
pattern; ZH uses recursive `array_count(... array_count(...) ...)`). Both are
valid; mechanically merging them risks a confusing doc.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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