StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
11302741
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2012-07-02T23:51:52.110
FavoriteCount
0
LastActivityDate
2012-07-02T23:51:52.110
LastEditDate
LastEditorUserId
0
OwnerUserId
1446005
ParentId
11274335
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
Generate a single-column <code>dates_hours</code> table which contains all dates and hours within a reasonable range (e.g. from 1900 to 2200). Then do a <code>LEFT JOIN</code> from this table to your current query. For this technique to perform correctly, you will probably need to add an indexed column to your table which contains a converted time stamp (your <code>copied_timestamp</code> converted to <code>DATETIME</code>, rounded to the hour) <pre class="lang-sql prettyprint-override"><code>SELECT date_hour, count(req.converted_timestamp) FROM dates_hours LEFT JOIN req ON req.converted_timestamp = dates_hours.date_hour WHERE date_hour BETWEEN (SELECT MIN(req.converted_timestamp) FROM req) AND (SELECT MAX(req.converted_timestamp) FROM req) GROUP BY date_hour </code></pre> To generate the <code>dates_hours</code> table: <pre class="lang-sql prettyprint-override"><code>CREATE TABLE dates_hours (date_hour DATETIME PRIMARY KEY); DELIMITER $$$ CREATE PROCEDURE generate_dates_hours (to_date DATETIME) BEGIN DECLARE start_date DATETIME; DECLARE inc INT; SELECT MAX(date_hour) INTO start_date FROM dates_hours; IF start_date IS NULL THEN SET start_date = '1900-01-01'; END IF; SET inc = 1; WHILE start_date + INTERVAL inc HOUR <= to_date DO INSERT INTO dates_hours VALUE (start_date + INTERVAL inc HOUR); SET inc = inc +1; END WHILE; END $$$ DELIMITER ; CALL generate_dates_hours('2200-01-01'); </code></pre> Okay, now that I am proof-reading myself, I realise this is quite far-fetched a solution. I hope someone comes up with a more elegant one.
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POGrouping records hour by hour or day by day and filling gaps with zero or null in mysql
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USRandomSeed
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. COThanks Yak. this solves the problem but for my usecase it is a little hard to maintain the code. I have found another solution and post it here. eager to know your idea.
 singulars
 PostPostId
 PO
 UserUserId
 USHeidarzadeh

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.