mysql-query

mysql update multiple rows, each with its own values, with a CASE statement

Hello! I'm trying to update two fields of several rows at once but I can't determine the right syntax to do so, except for doing so with one field update. Each row is identified by an id, and therefore I'm using a CASE statement. I have this table: tbl_accounts(id_account, nation_id, group_id) Now, the following query works ...

MySQL Query Problem with Alias and Aggregate Functions

I have a troublesome MySQL query as follows: SELECT camera_id, ((avg(low_price) + avg(high_price)) / 2) as avg_price FROM camera_general, camera_products WHERE camera_id = ir_camera_id AND dp_post_dt IS NOT NULL AND dp_post_dt NOT LIKE '0000%' AND currently_manufactured = 'Yes' AND ((no_of_sellers >= 0) OR ((TO_DAYS(CURRENT_DATE) - TO_D...

How to enable auto mysql real escape to all queries?

Hi, I'm running php 5.2.13 and i have an app that contains tons of files but they all calling one file at the beginning, i want to put some line in that file to automatically mysql real escape any query, because i don't want to go across every file and change code. Thanks! ...

SQL::Self join a table to satisfy a particular condition?

I have the following table: mysql> SELECT * FROM temp; +----+------+ | id | a | +----+------+ | 1 | 1 | | 2 | 2 | | 3 | 3 | | 4 | 4 | +----+------+ I am trying to get the following output: +----+------+------+ | id | a | a | +----+------+------+ | 1 | 1 | 2 | | 2 | 2 | 3 | | 3 | 3 | ...

error in query with JOIN USING

Consider this simple query: SELECT * FROM table1 JOIN table2 USING(pid) WHERE pid='2' ; I get this error: SELECT command denied to user 'root'@'localhost' for column 'pid' in table 'table1' When I replace USING with ON (and this right syntax...) the error disappears. What is the problem? ...

Self-join on a table with ActiveRecord

I have an ActiveRecord called Name which contains names in various Languages. class Name < ActiveRecord::Base belongs_to :language class Language < ActiveRecord::Base has_many :names Finding names in one language is easy enough: Language.find(1).names.find(whatever) But I need to find matching pairs where both language 1 and l...

MySQL - how to optimize query to count votes

Hi guys. Just after some opinions on the best way to achieve the following outcome: I would like to store in my MySQL database products which can be voted on by users (each vote is worth +1). I also want to be able to see how many times in total a user has voted. To my simple mind, the following table structure would be ideal: tab...

MySQL - COUNT before INSERT in one query

Hey all, I am looking for a way to query my database table only once in order to add an item and also to check what last item count was so that i can use the next number. strSQL = "SELECT * FROM productr" After that code above, i add a few product values to a record like so: ID | Product | Price | Description | Qty | D...

alphabetical order not working

Hi , I have customer details , have lastname column , Some of records contain white space in the name front and back , i want to do the alphabetical order , but not working properly, plz chk this screen shot , i cant able to guess wha tis the exact reason , ...

Change Permanently Session System Variable in MySQL

I added this line to my.ini wait_timeout=2000000 When I type show global variables It prints wait_timeout=2000000, but when I type show variables It prints wait_timeout=28800 I can set with set wait_timeout=2000000 But I do not want to set it all the time manually. Do you have any suggestion to set permanently session sys...

Email already sent?

Hi, Can someone explain a simple solution using MySQL and PHP how to check if an email has been sent already, stopping duplicates for users. I have a basic script, but it's not working for some reason - http://pastebin.com/k7yiQahb It inserts into the table the following: feed_id, recipient_id, issent 0, 0, Y Regards ...

Current status based on single date on multiple rows

Hello all! I hope it's not a duplicate, but believe me, I've searched high and low. I have a list of user records, let's call it qualifications. Example: Row#. Date User Qualification 1 2010-07-15 1 A1X 2 2010-08-30 1 B1X 3 2009-04-01 1 C1X Now I'd like to do a query, where on a given date or date range...

Remove on update condition without drop mysql table

I have a mysql table and data entries in it: CREATE TABLE `invoices`.`invoices` ( `InvoiceID` bigint(20) unsigned NOT NULL auto_increment, `UserID` int(10) unsigned NOT NULL, `Value` decimal(10,3) NOT NULL, `Description` varchar(4048) NOT NULL, `DateTime` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURR...

Mysql Compare Dates

Hello, I want to compare a date from DB that is between 2 given dates. The column from DB is DATETIME ,and I want to compare it only to date format,not datetime format. SELECT * FROM `players` WHERE CONVERT(CHAR(10),us_reg_date,120) >= '2000-07-05' AND CONVERT(CHAR(10),us_reg_date,120) <= '2011-11-10' I get this error when I execute ...

php MySql QUERY for Friends relations Table help

EDIT by:lawrence. I got the right query now select * from users, friends where (users.id=friends.user_id1 and friends.user_id2=$profileID) or (users.id=friends.user_id2 and friends.user_id1=$profileID) Question answered I need some help joining results from my friends and users table This is what my friends table look lik...

How to get one coulumn result in one row.

Hi, I'm trying to get a column result in a single row. Is it possible in My sql say I Select name from users where city = 'NewYork' now this will result in name mak sandy john Can I get the result in this name mak,sandy,john I Mysql concat_ws() function does concat but its not showing me result. ...

How to merge two nested set structures with on mysql query

Hey MySql Pros hope you can get me a hint, I've a problem with my NestedSets Structure. I have two NestedSets Structures, the first Structure(MainNestedSets) holds my nested sets information and a ReferenceCID to another NestedSets Structure(OtherNestedSets) see below. Now I want to receive the Result set seen in ResultAfterQuery, how...

the fastest way to insert multiple rows in mysql with a fixed value for a column

I'm looking for the fastest way to insert multiple rows in a MySql table with two columns. One column has a constant value (1 for example) while the other always changes. I am using php and i have a large string with email addresses (thousands), i want to put it in a table with the columns: email_cat_id and email_address. The email_cat_...

Mysql: converting date fro 'dd/mm/yyyy' to 'yyyymmdd'

Im working on a database that store dates in a varchar(10) mysql field (so sad). I can not alter the database structure (im building a small plug-in), but i have to query the database finding rows where this data field is between the next 10 days. Example: | fid | fdate | | 1 | 10/09/2010 | | 2 | 17/09/2010 | | 3 | 19/09/20...

How to sync two database tables with each other in mysql PHP

I have two tables called clients, they are exactly the same but within two different db's. Now the master always needs to update with the secondary one. And all data should always be the same, the script runs once per day. What would be the best to accomplish this. I had the following solution but I think maybe theres a better way to do...