I need to retrieve all default settings from the settings table but also grab the character setting if exists for x character. But this query is only retrieving those settings where character is = 1, not the default settings if the user havent setted anyone. SELECT `settings`.*, `character_settings`.`value` FROM (`settings`) LEFT JOIN `character_settings` ON `character_settings`.`setting_id` … Read more
I have two tables, one for job deadlines, one for describe a job. Each job can take a status and some statuses means the jobs’ deadlines must be deleted from the other table. I can easily SELECT the jobs/deadlines that meets my criteria with a LEFT JOIN: SELECT * FROM `deadline` LEFT JOIN `job` ON … Read more
I’ve got two postgresql tables: table name column names ———– ———————— login_log ip | etc. ip_location ip | location | hostname | etc. I want to get every IP address from login_log which doesn’t have a row in ip_location. I tried this query but it throws a syntax error. SELECT login_log.ip FROM login_log WHERE NOT … Read more
This question already has answers here: What is the difference between “INNER JOIN” and “OUTER JOIN”? (27 answers) Closed 1 year ago. I know about joins in SQL Server. For example. There are two tables Table1, Table2. Their table structures are the following. create table Table1 (id int, Name varchar (10)) create table Table2 (id … Read more
Assuming I have a left outer join as such: from f in Foo join b in Bar on f.Foo_Id equals b.Foo_Id into g from result in g.DefaultIfEmpty() select new { Foo = f, Bar = result } How would I express the same task using extension methods? E.g. Foo.GroupJoin(Bar, f => f.Foo_Id, b => b.Foo_Id, … Read more
What is the difference between LEFT JOIN and LEFT OUTER JOIN? 12 As per the documentation: FROM (Transact-SQL): <join_type> ::= [ { INNER | { { LEFT | RIGHT | FULL } [ OUTER ] } } [ <join_hint> ] ] JOIN The keyword OUTER is marked as optional (enclosed in square brackets). In this … Read more
