xxq250
/
homework-jianmu
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

Update 12-distinguished.md

This commit is contained in:
wade zhang 2024-07-09 10:38:06 +08:00 committed by GitHub
parent 3efb64ea8c
commit 8976ac0c83
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
docs/en/12-taos-sql/12-distinguished.md
View File

@ -80,7 +80,7 @@ These pseudocolumns occur after the aggregation clause.
`FILL` clause is used to specify how to fill when there is data missing in any window, including:
1. NONE: No fill (the default fill mode)
2. VALUE: Fill with a fixed value, which should be specified together, for example `FILL(VALUE, 1.23)` Note: The value filled depends on the data type. For example, if you run FILL(VALUE 1.23) on an integer column, the value 1 is filled. If multi columns in select list need to be filled, multi values are needed in fill clause, `SELECT _wstart, min(c1), max(c1) FROM ... FILL(VALUE, 0, 0)`.
2. VALUE: Fill with a fixed value, which should be specified together, for example `FILL(VALUE, 1.23)` Note: The value filled depends on the data type. For example, if you run FILL(VALUE 1.23) on an integer column, the value 1 is filled. If multiple columns in select list need to be filled, then in the fill clause there must be a fill value for each of these columns, for example, `SELECT _wstart, min(c1), max(c1) FROM ... FILL(VALUE, 0, 0)`.
3. PREV: Fill with the previous non-NULL value, `FILL(PREV)`
4. NULL: Fill with NULL, `FILL(NULL)`
5. LINEAR: Fill with the closest non-NULL value, `FILL(LINEAR)`