Ben pgAdmin (v1.20.0) iki alt sorgular katılmaya çalışıyorum: Ben şemada tablolar oluşturmak için izniniz yokSQL'de iki koşullu alt soruna nasıl katılabilirim? aşağıdaki gibi
select * from (
select distinct course_code "400-Level Courses", meet_time_start "Starting Time", meet_time_end "End Time", meet_day_of_week "Day", building_code "Building", building_room_no "Room"
from faculty_course_credit
left join course_schedule using (term_id, course_code, course_ref_no)
where (substring(course_code,4,1) = '4') and meet_time_start != '00:00'
)
inner join (
select * from (
select distinct course_code "500-Level Courses", meet_time_start "Starting Time", meet_time_end "End Time", meet_day_of_week "Day", building_code "Building", building_room_no "Room"
from faculty_course_credit
left join course_schedule using (term_id, course_code, course_ref_no)
where (substring(course_code,4,1) = '5') and meet_time_start != '00:00'
))
using (building_code=building_code, building_room_no=building_room_no, meet_time_start=meet_time_start, meet_time_end=meet_time_end, meet_day_of_week=meet_day_of_week)
ve aşağıdaki hata iletisi almaya devam:
ERROR: subquery in FROM must have an alias LINE 1: select * from ( ^HINT: For example, FROM (SELECT ...) [AS] foo. ********** Error **********
ERROR: subquery in FROM must have an alias SQL state: 42601 Hint: For example, FROM (SELECT ...) [AS] foo. Character: 16
Herhangi bir öneriniz var mı?