mysql

PHP & MySQL: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given

I'm trying to Integrate HTML Purifier http://htmlpurifier.org/ to filter my user submitted data but I get the following error below. And I was wondering how can I fix this problem? I get the following error. on line 22: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given line 22 is. if (mysqli_num_rows($dbc) =...

Nhibernate database connection in MySql using Asp& C#

I'm trying to save the values in database. But here I can able to save only once after executing. During second time it shows inner exception as "{"Duplicate entry '' for key 1"}" ...

Cheapest way to to determine if a MySQL connection is still alive

I have a pool of MySQL connections for a web-based data service. When it starts to service a request, it takes a connection from the pool to use. The problem is that if there has been a significant pause since that particular connection has been used, the server may have timed it out and closed its end. I'd like to be able to detect this...

MYSQL: Like Method, Similar Words - But Don't Show the Searched Word

Hello, actually i use this method to show similar words for a search request.. $query = "SELECT * FROM searches WHERE Query LIKE '%$search%' ORDER BY Query"; if someone searches for "nelly" it looks up in the database for similar words "nelly furtado, nelly ft. kelly"... but i dont want to show up the searched word.. example: yo...

How to do an IF statement based on the value of a MySQL table cell?

How can I do an if statement based on the value of a mysql table cell. For example, I have a table of people with a column called marital_status. This column has one of two values: yes or no. But this doesn't work: $query = mysql_query("SELECT marital_status FROM people WHERE first_name = 'John'"); while ($row = mysql_fetch_assoc($quer...

mySQL : using BETWEEN in table ?

I have a table that includes some student group name, lesson time, day names like Schedule. I am using C# with MySql and I want to find which lesson is when user press button from table. I can find it by entering the exact value like in the table, e.g. 08:30 or 10:25. But I want to make that getting system time and checking that it is...

MYSQL CASE WHEN PROBLEM

SELECT `profiles`.* FROM `profiles` INNER JOIN `friendships` ON `profiles`.id = `friendships`.(CASE WHEN friendships.profile_id = 1 THEN`friend_id` ELSE `profile_id` END) How can i make the inner join like profile.id = friendships.(here will select the one key that is needed) but it doesnt work. please help :P i...

MySQL DUMP as CSV

I've looked around and nothing seems to work: $file = '/path/to/file.csv'; $cmd = 'mysqldump DATABASE TABLE > '.$file.' --host=localhost --user=USER --password=PASS'; $cmd .= ' --lock-tables=false --no-create-info --tab=/tmp --fields-terminated-by=\',\''; exec($cmd); Everything I try creates an empty CSV file. Any ideas? Thanks much...

Correlated SQL Join Query from multiple tables

I have two tables like the ones below. I need to find what exchangeRate was in effect at the dateOfPurchase. I've tried some correlated sub queries, but I'm having difficulty getting the correlated record to be used in the sub queries. I expect a solution will need to follow this basic outline: SELECT only the exchangeRates for the ...

Call to undefined function query() - using PDO in PHP

I have a written a script in PHP that reads from data from a MySQL database. I am new to PHP and I have been using the PDO library. I have been developing on a Windows machine using the WAMP Server 2 and all has been working well. However, when I uploaded my script to the LINUX server where it will be used I get the following error when ...

SQL: Need to SUM on results that meet a HAVING statement

I have a table where we record per user values like money_spent, money_spent_on_candy and the date. So the columns in this table (let's call it MoneyTable) would be: UserId Money_Spent Money_Spent_On_Candy Date My goal is to SUM the total amount of money_spent -- but only for those users where they have spent more than 10% of their...

#1130 - Host ‘localhost’ is not allowed to connect to this MySQL server

I accidentally changed the "host" value for the root user inside of the user table for mysql. I need to change it back to localhost because I changed it to arancillary2125 (my other machines DNS name) but I cannot access mysql (from PHPMYADMIN or command prompt) due to "localhost" not having permissions any more. I am running windows X...

How can I calculate the size of a table using a condition

How can I count the table size in MySQL or PosgreSQL using a restriction? for example: WHERE organisation_id=1 ...

mySQL auto increment problem: Duplicate entry '4294967295' for key 1

I have a table of emails. The last record in there for an auto increment id is 3780, which is a legit record. Any new record I now insert is being inserted right there. However, in my logs I have the occasional: Query FAIL: INSERT INTO mail.messages (timestamp_queue) VALUES (:time); Array ( [0] => 23000 [1] => 1062 [2] =>...

How do I prevent duplicate entrys to mySQL?

On my site, I have a form that users fill out to become a member. They fill out name, bday, email, etc. Then when they click submit, the data gets into mySQL. But sometimes when a user clicks submit many times or refreshes the page, the data gets inputted to the database more than once. How can I prevent this accidental submission? Is th...

mysql table marked as crashed

I recently created a ajax based instant messaging application and after running for a while I got an error [table] is marked as crashed and should be repaired. How could this have happened and how do I go about preventing it happening again? ...

[wxWidgets] How to store wxImage into database, using C++?

I have some wxImages and I would like to store them into a BLOB (Binary Large OBject) field in a MySQL database. There are no methods in wxImage nor wxBitmap for obtaining the binary data as an array of unsigned char so I can load into the database. My current workaround is to write the image to a temporary file, then load the BLOB f...

Planning management slots/sessions

I have a planning structure on two tables to store available slots by day, and sessions. A slot is defined by a range of time in the day. CREATE TABLE slot ( `id` int(11) NOT NULL AUTO_INCREMENT , `date` date , `start` time , `end` time ); Sessions can't overlap themselves and must be wrapped in a slot. CREATE TABLE session ( `i...

Will MyISAM type tables work better than InnoDB for large numbers of columns?

I have a MySQL InnoDB table with 238 columns. 56 of them are TEXT type, 27 are VARCHAR(255). I am getting MySQL error 139 when users insert data sometimes. After research I found that I'm probably running into InnoDB row size/column size/column count limitations. (I'm putting it that way because the specific limits among those three thi...

What is the mysql 5.5 equivalent for the sys.dm_fts_index_keywords_by_document in sql 2008

I'm making a web application that uses the data in the sys.dm_fts_index_keywords_by_document. I'm interested how many times a given term occurs in each string that is indexed. For example, I have a table with a column called comments, the table has various strings in the comments field. When I make that column full text searchable, the...