[Solved] Cannot resolve symbol ++ in Scala
[ad_1] type Set = Int => Boolean defines Set to mean a function from Int to Boolean. There is no ++ method on functions. That’s it. 0 [ad_2] solved Cannot resolve symbol ++ in Scala
union
[Solved] Show data from multiple tables by date and time [closed]
[ad_1] Yes it is, like “Tom asked a question:__ in:__ few minutes a go” So you need a user name, an action, a timestamp and a hidden id. Well performance-wise a separate table is better (you avoid unions and maybe joins if it’s not necessary to be mormalized), but you have the extra storage (is … Read more
[Solved] Selecting the right column
[ad_1] Both. In some rows, t2.number is number and in others t3.number is number. The result of the union all in a single result set. The result set doesn’t know the origin of the values in any particular column (although you could include another column with this information). 3 [ad_2] solved Selecting the right column
[Solved] How to combine three queries?
[ad_1] I’m sure you can work this out yourself.. I guess it needs to look something like this.. but you don’t say how you want the data to be combined so I’ve just just a cross product (the WHERE 1=1) of the last data set to a union of the first two with PH AS( … Read more
[Solved] MYSQL: Search for User ID in one table to search for data in 2 other tables, then show data from all 3 tables
[ad_1] SELECT * FROM section_user_map JOIN users USING (UID) JOIN verification USING (UID) WHERE SectionID = 65 AND CompleteDate BETWEEN ‘2012-05-09 12:00:00’ AND ‘2012-05-11 12:00:00’ See it on sqlfiddle. No UNION required. Outer join would only be required if you still want to return results for users who do not exist in one (or both) … Read more