Assuming I have the tables student, club, and student_club: student { id name } club { id name } student_club {
I think I should know this somehow, especially after reading a lot of questions and answers regarding \"The condition must go into the ON clause, not in the WHERE clause\". However, I am still lost.
If I have a table with customer IDs in one column and time zones in another, is there a plain SQL statement that can select all customer IDs that have different time zone values?In other words, I want
I have a table like idfid 2053 2353 5353 Here I need to return true when my condition is something like .. where fid=53 and id in(20,23,53)
I have two models, Project and Category, which have a many-to-many relationship between them. The Project model is very simple:
I have two tables in a MySQL database, Locations and Tags, and a third table 开发者_如何学运维LocationsTagsAssoc which associates the two tables and treats them as a many-to-many relationship.
I\'m developing an ETL process, and need a bridge table for a one-to-many relationship between a fact table and a dimension table (MySQL database). There is a limited number of combinations (some thou
I have the following query using INTERSECT and I can\'t figure out how to t开发者_运维问答ranslate it to MySQL using INNER JOIN.
I have a quick question about a select statement condition. I have the following table with the following items. What I need to get is the object id that matches both type id\'s.
Consider two table.Employee and Project.Employee table has fields like eid,ename.Project table has fields like pid,pname.Now,since an employee can work on many projects and a project can be done by ma
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