Given a table bugs(id, token, title, category, device, reported_at, created_at, updated_at), find the title of the bug with token = token660 and reported_at on 2020-08-30. Your query should output a table with the following columns (title).

Given a table bugs(id, token, title, category, device, reported_at, created_at, updated_at). Select all distinct bug categories. Your query should output a table with the following columns (category)

Given a table bugs(id, token, title, category, device, reported_at, created_at, updated_at), find how many bugs were created on 2019-03-01 or later. Your query should output a table with the following columns (count).

We need to create a report to display the order id, ship date and order total of your ORDER table. If the order has not been shipped, your report must display 'Not Shipped'. If the total is not available, your report must display 'Not Available'.In the ORDER table, the SHIPDATE column has a datatype of DATE. The TOTAL column has a datatype of INT.Which statement do you use to create this report?Select one:a.SELECT ordid,TO_CHAR(shipdate, 'Not Shipped'),TO_CHAR(total,'Not Available')FROM order;b.SELECT ordid, IFNULL(shipdate, 'Not Shipped') as SHIPDATE,Total FROM order;c.SELECT ordid, NVL(to_char(shipdate), 'Not Shipped') SHIPDATE,NVL(total,'Not Available')TOTAL FROM order;d.SELECT ordid, shipdate "Not Shipped",total "Not Available"FROM order;

SELECT DISTINCT el.device_id, DATE(el.create_time) date, CASE WHEN el.platform IN ('') THEN 'null' ELSE 'unknown' END AS platform_div, CASE WHEN el.event_id='home_page_view' THEN 1 ELSE 0，caseWHEN ud.country ='' THEN 'unknown' ELSE 'developing_country' END AS country_div FROM event_logs el JOIN user_devices ud ON el.device_id = ud.device_id我要如何在查询结果中加入每个device_id使用过的次数

Table: ActivityColumn NameTypeplayer_idintdevice_idintevent_datedategames_playedint(player_id, event_date) is the primary key of this table.This table shows the activity of players of some game. Each row is a record of a player who logged in and played a number of games (possibly 0) before logging out on some day using some device.Write a SQL query that reports the device that is first logged in for each player.The query result format is in the following example:Activity table:player_iddevice_idevent_idgames_played122016-03-015122016-05-026232017-06-251312016-03-020342018-07-035Result table:player_iddevice_id122331Optionsselect player_id, device_idfrom Activitywhere (player_id, event_date) in (select player_id, min(event_date)group by player_id);select player_id, device_idfrom Activity (player_id, event_date) in ( select player_id, min(event_date) from Activity group by player_id);select player_id, device_idfrom Activitywhere (player_id, event_date) in ( select player_id, min(event_date) from Activity group by player_id);select device_idfrom Activity where (player_id, event_date) in (select player_id, min(event_date)from Activity group by player_id);