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  • Index a mysql table of 3 integer fields

    - by Doori Bar
    I have a mysql table of 3 integer fields. None of the fields have a unique value - but the three of them combined are unique. When I query this table, I only search by the first field. Which approach is recommended for indexing such table? Having a multiple-field primary key on the 3 fields, or setting an index on the first field, which is not unique? Thanks, Doori Bar

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  • MySQL select/where statement

    - by expo101
    I have a webapplication linked to a mysql database with the following fields: field 1:trip_id field 2:trip_destination field 3:trip_description field 4:trip_duration In the webapplication I have a listbox based on the following: ListBox value =1: trip duration 1 - 5 days ListBox value =2: trip duration 6 - 10 days Listbox value =3: trip duration 11 -20 days ListBox value =4: trip duration over 20 days How do I put this in the sql select statement?

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  • how to number the datas from mysql

    - by udaya
    Hi This is a doubt on mysql select query let me axplain my doubt with a simple example consider this is my query SELECT dbCountry from tableCountry tableCountry has fields dbCuntryId dbCountry and dbState I have the result as dbCountry india america england kenya pakisthan I need the result as 1 india 2 america 3 england 4 kenya 5 pakisthan the numbers 12345 must be generated with the increase in data and itis not a autoincrement id How can i get it is it something like loop

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  • Store html into MYSql database

    - by jouzef19
    hello I'm try to store String (that contain html ) to mysql database by using Longtext data type. but its always says "You have an error in your SQL syntax". (note : i tried to store normal text , and its work)

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  • MySQL greatest value in row?

    - by noryb009
    Hi! I'm using MySQL with PHP. This is like my table: (I'm using 3 values, but there are more) id | 1 | 2 | 3 1 | 3 |12 |-29 2 | 5 |8 |8 3 | 99|7 |NULL I need to get the greatest value in a certain row. If should get: (id - output) (1 - 2), (2-2), (3-1). Is there any queries for this? I've been trying, but I can't get it to work right.

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  • Sorting MySQL table by next due date

    - by Zagga
    Hi folks, I have a MySQL table that stores (amongst other things) a persons date of birth. Is there any way to sort the table so the next due birthday is at the top? I have the date stored in standard yyyy-mm-dd DATE format and seperate year, month and day fields so I can sort it by the first birthday of the year (ORDER BY month, day) but I can't seem to get any further. Any help would be greatly appreciated. Zagga

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  • I need some advice from Experts on how to develop a PHP site with MySQL

    - by mouthpiec
    Hi, I need some advice from experts :) I will develop a website using PHP and I will use also MySQL. I bought some server space from a Virtual private server including all the service needed. How should I develop the site? Shall I develop it on my machine at home (using for example Wamp), and when ready transfer all the files to the server? If so what is the best method to transfer also the database? Thanks in advance!!

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  • Get top rated item using AVG mysql

    - by user1876234
    I want to find top rated item using AVG function in mysql, right now my query looks like this: SELECT a.title, AVG(d.rating) as rating FROM in8ku_content a JOIN in8ku_content_ratings d ON a.id = d.article_id ORDER BY rating DESC Problem is that it takes AVG of all items and the result is not accurate, what should be changed here to get correct result ? Tables: in8ku_content [id, title] in8ku_content_ratings [id, article_id, rating]

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  • Sort MYSQL Data By Number of Entries

    - by Belgin Fish
    Hi, I'm wondering how I can sort mysql data based on the number of entries. I'm doing this so I can have a page of the top purchases, so it would have to retrieve all the product_id's from a table, and then sort them by the most times one shows up, limiting it to 10 or something. Thanks!

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  • summing the sum in mysql

    - by JPro
    Hi, Say If I get a resultset in mysql as : ID count(posts) 101 2344 102 3245 103 232 104 23 Is there any way to get the tota count of count(posts) in the query itself, like this? ID count(posts) 101 2344 102 3245 103 232 104 23 ------ 5844

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  • How to make db structure for multiple input in MySQL and PHP

    - by bob
    Below is my current structure for MySQL database id | item_name | item_files ------------------------------------------ 1 | Item A | file1.zip,file2.zip,file3.zip 2 | Item B | file3.zip Example I create simple form to fill up Item Name and Multiple upload files then store it to db. Question :- How to design the db structure for accept the multiple files? There have a way which I don't want to use explode, implode to get the file1.zip file2.zip file3.zip

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  • How to remove MySQL database?

    - by Masi
    You may notice from my last question that a problem caused some more problems here. My database is now unusable partly due to my interest to break things and my inability to look at error messages. I know that I should not reuse primary keys, but I would like to use them again after the removal of the database that I deteriorated. So How can you correctly remove MySQL database?

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  • mySQL convert varchar to date

    - by Jeff V
    I need to convert a varchar value of 1/9/2011 to a date in mySQL and I want only the month and year. So that I can then use the PERIOD_DIFF function (so I would need the above to be converted to 201101). I've tried various ways using the STR_TO_DATE function: SELECT STR_TO_DATE(CYOApp_oilChangedDate, '%m/%Y') FROM CYO_AppInfo But I get weird results... (for example: 2009-01-00) What am I doing incorrectly?

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  • mysql query problem

    - by PiePowa
    hey everybody i'm trying to do somthing simple like this SET i = 0; WHILE (i <= 2230686) DO INSERT INTO customers(check) VALUE(0); SET i=i+1; END WHILE; in the phpmyadmin SQL query box and it doesntwork and the mysql doesnt throw an understandable reason any clues ?

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  • MySQL 'user_id' in where clause is ambiguous problem

    - by HoMe
    How can I correct the problem I keep getting from the code below which states 'user_id' in where clause is ambiguous. Thanks for the help in advance. Here is the mysql table. SELECT user.*, user_info.* FROM user INNER JOIN user_info ON user.user_id = user_info.user_id WHERE user_id='$user_id'

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