dima/supabase
1
0 Fork 0
mirror of https://github.com/supabase/supabase.git synced 2026-10-11 04:15:04 +03:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #5251 from Robert-Nickel/master

Browse Source 
Fixed left join syntax: use _on_ not _where_.
This commit is contained in:
Copple authored and GitHub committed 2022-02-01 12:01:41 +01:00
2 parents 8f6d57c6a0 5758f229bf
commit 8817064738
1 file changed
+8 -8
Download Patch File Download Diff File Expand all files Collapse all files
www/_blog/2020-11-18-postgresql-views.mdx
+8 -8
View File
@@ -62,8 +62,8 @@ create view transcripts as
courses.code,
grades.result
from grades
left join students where grades.student_id = students.id
left join courses where grades.course_id = courses.id;
left join students on grades.student_id = students.id
left join courses on grades.course_id = courses.id;
```
Once done, we can now access the underlying query with:
@@ -95,8 +95,8 @@ select
courses.code,
grades.result
from grades
left join students where grades.student_id = students.id
left join courses where grades.course_id = courses.id;
left join students on grades.student_id = students.id
left join courses on grades.course_id = courses.id;
```
We can run this instead:
@@ -119,8 +119,8 @@ select
courses.code,
grades.result
from grades
left join students where grades.student_id = students.id
left join courses where grades.course_id = courses.id
left join students on grades.student_id = students.id
left join courses on grades.course_id = courses.id
where courses.code != 'PG101';
```
@@ -151,8 +151,8 @@ create materialized view transcripts as
courses.code,
grades.result
from grades
left join students where grades.student_id = students.id
left join courses where grades.course_id = courses.id;
left join students on grades.student_id = students.id
left join courses on grades.course_id = courses.id;
```
Reading from the materialized view is the same as a conventional view: