I want to get the top 1 row for each unique value of b with the minimum value of c for that particular value of b. Even though there can be more than 1 row with the same min value (just chose the firs
For a rails 3 class like class Item < ActiveRecord::Base has_many :production_runs has_many :deliveries
How can I extrac开发者_StackOverflowt the values from a record as individual comuns in postgresql SELECT
Let\'s put an easy example with two tables: USERS (Id, Name, City) PLAYERS (Id_Player, Number, Team) And I have to do a query with a subselect in a loop, where the subselect is always the same, so
I have the following tables: CREATE TABLE `categories` ( `id` int(11) NOT NULL AUTO_INCREMENT, `path` varchar(255) COLLATE utf8_unicode_ci NOT NULL DEFAULT \'/\',
I posted a previous question here asking about what was better, JOIN queries or queries using subselects. Link: Queries within queries: Is there a better way?
I have this 3 tables in my DB: product (id, sku, type, price), product_relation (parent_id, child_id) and product_stock (product_开发者_如何学运维id, quantity, in_stock). There are possible relations
I\'m trying, as in title, to insert a subquery in select clause like in this simple SQL: SELECT id, name, (select count(*) from item) from item
Let\'s say I have the follow SQL statement. I would like to convert this to Torque Criteria: SELECT table.name, subq1.total AS \'TOTAL\', subq2.total2 AS \'SECOND TOTAL\'
I have data like this: tableA.ID --------- 1 2 3 tableB.ID tableB.NUM -------------------- 110 115 218 312 212 215
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