[subquery] Forum Topics

I am trying to do a check to see if a student meets the prerequisite before they can register for a course section. CourseSecID = 27 (ID of the course section the student wants to register for.) What I am doing is querying the student's acad cred records to see …

Hello buddies , I have no Idea what is subquery, every time I tried to link two tables in one sql query I failed here is the scenario I want: in this pic I have posts with "**user_id**" only I need to show the username which stored on another tables …

SELECT t.* FROM (SELECT * FROM jobs WHERE `status` IN (0,1,2,3) ORDER BY `status` DESC, job_datetime LIMIT 11, 20) AS t That's a cut down sample of my sql. It was more complicated, but I've pared it down to this just to see why I was getting some strange numbers …

Hi everyone, Trying to do a subquery to select the minimum price from table1, table what holds 15 million rows. I think that my approach is not the most suitable way of doing this. I want to select after oen_norm because oen_norm may have 1-10 rows per entry, but I …

I have a query in which I need to display some group function figures SUM COUNT etc from a joined table. I also need to select the latest version (by datetime) of a matching record from a separate table, which I can do using an ordered subquery in the join. …

Hi thought i'd try here see if anyone can help solve this quicker. First off we have a email database. The main table is the email data, all unique rows per email address with a unique id. eg. emailid,email 1,email@example.com 2,email@example.co.uk Next we have another table which logs the data …

I have a query which generates a soccer standings table and although it works fine there I am trying to implement a couple of variations on it but everything I have tried has failed. I have searched and asked many times and for both problems and it seems as though …