[fix](doc) rtrim.md zh: rewrite the tab/newline example so the result table stays single-row#3805
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[fix](doc) rtrim.md zh: rewrite the tab/newline example so the result table stays single-row#3805boluor wants to merge 1 commit into
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… block stays a single row
The previous example showed `RTRIM('hello world \t\n ')` whose result
contains an actual newline character. Markdown then renders that
result as two visual lines inside the result cell:
| hello world
|
which breaks the ASCII grid and makes the result hard to read. Rewrite
the same demonstration using LENGTH() so the result is two integers
on a single row, and add a one-sentence intro that calls out the
teaching point ("RTRIM only strips ASCII spaces, not tabs or
newlines"). The original 16-vs-15 numbers come from running on a
single-node Apache Doris 4.1.1 cluster.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Doc page (4.x): `scalar-functions/string-functions/rtrim.md` (ZH).
The third example showed:
```sql
SELECT RTRIM('hello world \t\n ');
```
Whose result is the input minus the trailing space — but the embedded `\t\n` is a real tab and newline, so the result block rendered as two visual rows inside the cell and broke the ASCII grid:
```
| hello world
|
```
This rewrites the same teaching point using `LENGTH()` so the cluster returns two integers (16 / 15) on a single line, and adds a one-sentence prose intro that calls out the lesson: RTRIM only strips ASCII spaces, not tabs or newlines.
Verification
Both LENGTH values confirmed on a single-node Apache Doris 4.1.1 cluster.
Test plan
🤖 Generated with Claude Code