Given table mytable with two columns letter and num letter|num ------+------ a|1 a|1 b|1 b|2 I tried doing SELECT letter, count(letter), num, count(num) from mytable group BY letter, num;
I have the following two tables -- userprofile and videoinfo. videoInfo has a FK to userprofile. CREATE TABLE `userprofile_userprofile` (
I have this query SELECT salary FROM worker W JOIN single_user U ON u.users_id_user = W.single_user_users_id_user
Is this possible in sql : COUNT(ads.id) AS ads, * 开发者_开发问答If not, then what to use?I\'m using LEFT JOIN, there are two tables: ads and ad, but I\'m not using GROUP BY:
I am trying to find the number of video credits a particular user has. The following are the three tables that are relevant:
* edit * I asked this question as a php question, without the tag of mySql (which has been added by another SO member --> not a big deal to me, but just saying). I am sorry for any confusion the inclu
I have a table called activity that uses the following columns: LoginDate, LoginID, Department, IsMGR I tried this query:
I have a table with 4 columns: name, date, version,and value. There\'s an composite index on all four, in that order. It has 20M rows: 2.000 names, approx 1.000 dates per name, approx 10 versions per
Tables : -- products -- id -- categories -- id -- products_categories -- id product_id category_id What could be a SQL query that returns all th开发者_开发知识库e products IDs that matches ALL a
I have a table like so: id | userid | operation_id | category | date ===============================================
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