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Strange behavior of a php/mysql function


Strange behavior of a php/mysql function

By : Unni Kuttan
Date : November 18 2020, 01:01 AM
like below fixes the issue You are executing the query3 two times and displying the data retrieved from second execution
code :
while (($count < 5) && (mysqli_fetch_array($query3, MYSQL_NUM))) {
    $row = mysqli_fetch_array($query3, MYSQL_NUM);


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MySQL IN() strange behavior

MySQL IN() strange behavior


By : user3209197
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You can use the FIND_IN_SET() function:
code :
SELECT a.id, (
   SELECT f.name
   FROM facs f
   WHERE FIND_IN_SET(f.id, REPLACE(a.facs, ';', ','))
) AS facs
FROM ads LIMIT 0, 10
Strange behavior of mysql when group using date function

Strange behavior of mysql when group using date function


By : SophieD
Date : March 29 2020, 07:55 AM
Any of those help As @a_horse_with_no_name suggested I imported the table with the data in MySQL version 5.5.24 Everything works as expected. Now i see distinct dates in the result set and sorting works just fine.
Strange behavior of MySQL aggregate function

Strange behavior of MySQL aggregate function


By : mantoo gupta
Date : March 29 2020, 07:55 AM
With these it helps Mysql's documentation on group by handling explains in great detail how and why mysql behaves under certain configuration settings when you use group by.
As @Mihai already pointed out in his comment, mysql has only full group by sql mode that governs whether to
Strange behavior with count function in MySQL 5.6

Strange behavior with count function in MySQL 5.6


By : Shan Ji
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Your query will return different counts as long as new users get registered. You can find out the details if you replace COUNT(*) with *.
My guess is that you haven't really verified that because you're assuming that 2016-10-03 15:33:26 is date in the past thus there's no possibility of having new users. The fact is that it's a local time and as of now (2016-10-03 14:30 UTC) it's a past date in the Eastern time zones and still to come everywhere else.
Strange Behavior of MySQL MAX function

Strange Behavior of MySQL MAX function


By : user5750271
Date : March 29 2020, 07:55 AM
This might help you 0 is the default value used for an int field without a default specified. Inserting null values into not null fields usually results in the field given the null value being assigned it's default value instead. Most aggregate functions only return null only if the encounter no non-null values. Since the table is empty, MAX returns null, and NULL + 1 is NULL. You're inserting null into an integer field without a default value specified.
Edit: To insert 1 in such cases use IFNULL(MAX(UserId),0)+1
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