Tagged Questions
-2
votes
0answers
29 views
How can I group sql rows by hours? [closed]
My table:
tbl_questions =>
qid
question
detail
mcid
cid
uid
answercount
dateposted
status
showname
emailnotify
question_type_id
I would like to get all rows group by hours. {dateposted = Y-m-d ...
0
votes
0answers
106 views
MySQL Left Join Select all rows
Hi guys I have a query which is pulling data from database :
SELECT sandwich_table.id,
`sandwich_name`,
salad,
COUNT(salad),
salad_type.type,
...
0
votes
0answers
81 views
Try to find a match using SUBSTRING(SHA1(value)), 0, 6)
I have a tbl where all entries for companies that participate in a online project are saved. This table is named "business". Those companies can use their employess to access the online platform i 've ...
0
votes
1answer
719 views
Connect Error (2054) - mysql_old_password issue still not solved
i use php 5.4.3 and i want to connect to a MySQL DB remotely (php script resides on a different server than the db) with normal oop way:
$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);
...
1
vote
1answer
94 views
MySqli - select from db based on time difference with CURTIME() or SUBTIME()
I have a db with some customers data. There I store their last login time as datetime.
I want to run a cron php script every min which will query mysqli for their last login datetime and if that was ...
2
votes
1answer
179 views
Parsing and binding variables for SELECT .. WHERE column IN ( .. ) queries
I'm looking to make sure that all queries in a php web application have proper use of bind variables to minimize parsing of the queries.
I'm wondering how Oracle parses queries that compares a ...
1
vote
1answer
51 views
Group activities in activity feed by users and products
On my website I'm building an activity feed where I got the basics done and are now making some improvements here and there.
One of them is the grouping. I've built it so that if multiple users buys ...
1
vote
0answers
108 views
big mysql database optimization
My Joomla mysql database has about 3.4 million rows in content table. It is just static article. Very slow and often use out of resources. To speed up it, I segmented it into 6 sub-tables and added ...
1
vote
1answer
52 views
Sanitizing a form's database input while retaining basic HTML markup
Is there a way to sanitize database input (say, for a comment form), which also allows for the end user to use basic HTML styling markup? As in, if a user wraps their text in <i>/<em> or ...
0
votes
0answers
278 views
Sqlsrv sqlsrv_num_rows FALSE, adding cursor type times out
$sql = "SELECT * FROM lastdeath";
$result = sqlsrv_query( $con, $sql);
if( $result === false )
{
die( print_r( sqlsrv_errors(), true));
}
$row_count = sqlsrv_num_rows($result);
echo $row_count;
...
1
vote
0answers
507 views
SQL query optimization in Prestashop e-Commerce solution
I'm working on a layered navigation module within Prestashop e-Commerce solution.
I'm trying to optimize a SQL query which creates a temp table during execution. I think this is creating a ...
1
vote
1answer
181 views
How to get a unique highscore per user
I have the following tables: users, highscores
I would like to get the top ten best results in highscore. The scores should be unique, meaning one score per user. I tried using INNER JOIN and GROUP ...
3
votes
2answers
334 views
Testing Query Speed
When I'm running a query for the first time, it takes x miliseconds to be executed. When I run it the second time it takes a lot less time. I assume that it is some caching involved in this mechanism, ...
3
votes
2answers
515 views
MySQL connection doesn't work anymore
I had two MySQL servers running (127.0.0.1:3306 and 127.0.0.1:3307). Now I get this strange error: mysql_connect(): Lost connection to MySQL server at 'reading initial communication packet' I can ...
