mysql

MySql. What is there error on this insert+select+where statement?

What is wrong with this statement? It works with sqlite and MS sql (last time i tested it) I would like a select unless there is no match with name or email. Then i would like to insert. I have it as one statement because its easy to keep concurrent safe as one statement. (its not that complex of a statement). INSERT INTO `user_data` (...

Is there any good universal PHP MySQL HTTP tunnel?

Many Windows MySQL tools like Navicat or EMS have this thing - You just put a PHP file on a shared hosting and can connect local running program to the remote MySQL server on the Web via the web service exposed by that php file. Are there any good popular free solutions to expose full MySQL as a web service using PHP? ...

Find the % character in a LIKE query

Hi, I've an SQL database and I would like to do a query who show all the datas containing the sign "%". Normally, to find a character (for example: "z") in a database I use a query like this : mysql_query("SELECT * FROM mytable WHERE tag LIKE '%z%'"); But here, I want to found the % character, but in SQL it's a joker so when I write:...

MySql Alter Syntax error with mulitple FK

If i do the first one i have no problem. When i do addition i get a syntax error. What is wrong with the syntax? The error says syntax error near [entire 2nd line] alter table `ban_Status` add FOREIGN KEY (`banned_user`) REFERENCES `user_data`(`id`) alter table `ban_Status` add FOREIGN KEY (`banned_user`) REFERENCES `user_data`(`id`),...

Which data structure used in MySql?

Which data structure used in MySql? ...

How do I tell Django to use MySql from a WAMP install?

I've had Django running with Sqlite for a while. I then installed WAMP, and I now want to get ready for a production run, and would like to switch to MySql. Is there a straightforward way of telling it about the MySql instance that is running with WAMP? ...

File Storage for Web Applications: Filesystem vs DB vs NoSQL engines

I have a web application that stores a lot of user generated files. Currently these are all stored on the server filesystem, which has several downsides for me. When we move "folders" (as defined by our application) we also have to move the files on disk (although this is more due to strange design decisions on the part of the origina...

Query MySQL data from Excel (or vice-versa)

I'm trying to automate a tedious problem. I get large Excel (.xls or .csv, whatever's more convenient) files with lists of people. I want to compare these against my MySQL database.* At the moment I'm exporting MySQL tables and reading them from an Excel spreadsheet. At that point it's not difficult to use =LOOKUP() and such commands...

Is there really no binary distribution of MySQLdb for Windows?

You have to build it yourself? Or am I missing something. ...

MySql not storing foreign characters correctly

On SQLITE this way fine. I switch to mysql and instead of クイン i get ???. The column is TEXT or sometimes VARCHAR(255) (i believe its VARCHAR(255) in this case). How do i have mysql save the characters properly? ...

mysql first record retrieval

While very easy to do in Perl or PHP, I cannot figure how to use mysql only to extract the first unique occurence of a record. For example, given the following table: Name Date Time Sale John 2010-09-12 10:22:22 500 Bill 2010-08-12 09:22:37 2000 John 2010-09-13 10:22:22 500 Sue 2010-09-0...

Anything wrong with this MySQL quert? takes 10 seconds+ to load

I have a search that is taking 10 seconds+ to execute! Keep in mind it is also searching over 200,000 products in the database. I posted the explain and MySQL query here. 1 SIMPLE p ref PRIMARY,products_status,prod_prodid_status,product... products_status 1 const 9048 Using where; Using temporary; Using filesort 1 SIMPLE v...

Can I join two tables whereby the joined table is sorted by a certain column?

I'm not much of a database guru so I need some help on a query I'm working on. In my photo community project I want to richly visualize tags by not only showing the tag name and counter (# of images inside them), I also want to show a thumb of the most popular image inside the tag (most karma). The table setup is as follow: Image tabl...

MySQL "OR MATCH" hangs (very slow) on multiple tables

After learning how to do MySQL Full-Text search, the recommended solution for multiple tables was OR MATCH and then do the other database call. You can see that in my query below. When I do this, it just gets stuck in a "busy" state, and I can't access the MySQL database. SELECT a.`product_id`, a.`name`, a.`slug`, a.`description`, b....

How trasmit a Dictionary in a jsons form

I have a dictionary in jsons form like this: $user = "{ name: Mary , born: 1963, money: 213 }"; I need to pass it throught this field: <input type="hidden" name="custom" value="" > and then insert it in the db: INSERT INTO user ( name, born, money ) VALUE ( $name, $born, $money ) How can I do that ? ...

Synchronizing MySQL databases

Hi all, I have a maintanance problem synchronizing my MySQL data bases . These are the databases I have : My development DB : Here I make my curret development changes . Staging DB : I need to make all the changes I did in the development on it before using , currently I hold migration scripts for structure and data. Production DB : A...

how to get the sum of the column in crystal report?

how to get the sum of the particular column value in crystal report? ...

Best way to create a SPARQL endpoint for a RDBMS (MySQL database)

I am doing (want to do) some experiments with Linked Open Datasets particularly those put out by governments. I have a RDBMS (more specifically MySQL). I designed it with semantic web ideas in mind i.e. I have a information stored as objects, predicates and classes which define objects. In turn all objects are related to each other thou...

Calculating percent of votes inside mysql statement.

UPDATE polls_options SET `votes`=`votes`+1, `percent`=ROUND((`votes`+1) / (SELECT voters FROM polls WHERE poll_id=? LIMIT 1) * 100,1) WHERE option_id=? AND poll_id=? Don't have table data yet, to test it properly. :) And by the way, in what type % integers should be stored in database? Thanks for the help! ...

SQL LIKE question

I was wondering if there's a drawback (other than bad practice) to using something like this SELECT * FROM my_table WHERE id LIKE '1'; where id is an integer. I know you're supposed to use id=1 but I am writing a java program and if everything can use LIKE it'll be a lot easier for me. Also, so far, everything works fine; I get the co...