74a482ca7f
After this PR #9272, the `docs/build_help_zip.sh` will run failed. This PR fix this issue. But the help module still has some parse problem, I will fix it in next PR. This CL mainly changes: 1. fix `docs/build_help_zip.sh` error 2. remove `sql-reference-v2` to `sql-reference` 3. modify build extension github action to run `docs/build_help_zip.sh`
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1.6 KiB
title, language
| title | language |
|---|---|
| ALTER-VIEW | en |
ALTER-VIEW
Name
ALTER VIEW
Description
This statement is used to modify the definition of a view
grammar:
ALTER VIEW
[db_name.]view_name
(column1[ COMMENT "col comment"][, column2, ...])
AS query_stmt
illustrate:
- Views are all logical, and the data in them will not be stored on physical media. When querying, the view will be used as a subquery in the statement. Therefore, modifying the definition of the view is equivalent to modifying query_stmt.
- query_stmt is any supported SQL
Example
- Modify the view example_view on example_db
ALTER VIEW example_db.example_view
(
c1 COMMENT "column 1",
c2 COMMENT "column 2",
c3 COMMENT "column 3"
)
AS SELECT k1, k2, SUM(v1) FROM example_table
GROUP BY k1, k2
Keywords
ALTER, VIEW