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  • php mysql search

    - by mckenzie
    Hello, My code contain SELECT * FROM newchap WHERE company LIKE '%$company%' OR Category LIKE '%$cat%' It works perfectly however, when the field $company contain empty, it return all result in MYSQL. How to prevent it?

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  • mysql left join queries

    - by Mike79
    I have a question about the snippet below. I'm wondering, if the first query doesn't bring any results, would I still get the results for the second query? select * from ( -- first query ) as query1 left join ( -- second query ) as query2 on query1.id=query2.id left join ( -- third query ) as query3 on query1.id=query3.id; Update: what I need is a full join, however, MySQL does not support it, what would be a good way to emulate this?

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  • 50 million+ Rows of Data - CSV or MySQL

    - by eWizardII
    Hello, I have a CSV file which is about 1GB big and contains about 50million rows of data, I am wondering is it better to keep it as a CSV file or store it as some form of a database. I don't know a great deal about MySQL to argue for why I should use it or another database framework over just keeping it as a CSV file. I am basically doing a Breadth-First Search with this dataset, so once I get the initial "seed" set the 50million I use this as the first values in my queue. Thanks,

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  • accessing SQL syntax reference in mysql workbench

    - by dcompiled
    Finding it a little bit tedious migrating to the new Mysql Workbench (5.2.22) even though it has many more features than the older GUI tools. Right now I'm confused why I can't find an SQL reference when I open the Doc Library. Is there a way to access this info within the workbench, I'd prefer not to have to open a browser to access reference info on the web.

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  • Using MySQL variables in a query

    - by Jon Tackabury
    I am trying to use this MySQL query: SET @a:=0; UPDATE tbl SET sortId=@a:=@a+1 ORDER BY sortId; Unfortunately I get this error: "Parameter '@a' must be defined" Is it possible to batch commands into 1 query like this, or do I need to create a stored procedure for this?

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  • mysql circular dependency in foreign key constraints

    - by Flavius
    Given the schema: What I need is having every user_identities.belongs_to reference an users.id. At the same time, every users has a primary_identity as shown in the picture. However when I try to add this reference with ON DELETE NO ACTION ON UPDATE NO ACTION, MySQL says #1452 - Cannot add or update a child row: a foreign key constraint fails (yap.#sql-a3b_1bf, CONSTRAINT #sql-a3b_1bf_ibfk_1 FOREIGN KEY (belongs_to) REFERENCES users (id) ON DELETE NO ACTION ON UPDATE NO ACTION) I suspect this is due to the circular dependency, but how could I solve it (and maintain referential integrity)?

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  • How do I generate site map from MySQL database

    - by mathew
    Hi all I am new to Php and working on a project which needs to generate sitemaps from URLS which stored in MySQL database. how can I do this?? Is there any one have any idea?? site maps can be in php extension too and only requirement is list of sites display in each page

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  • Connect to MySQL in Ruby using NetBeans

    - by Varun
    I've downloaded the "dbd-mysql-0.4.4.zip" and linked it to my project. While I try to run a demo code from NetBeans the very first line require "dbi" gives me an error. Is there a different way to do it? I also tried jruby setup.rb config --with=dbi,dbd_mysql from the command prompt and it gave me the following error: config: unknown option --with=dbi,dbd_mysql Try 'ruby setup.rb --help' for detailed usage. Any suggestions please?

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  • mysql meeting multiple conditions

    - by Djeux
    I'm having a table, where one ID, can have multiple statuses | client_id | status_id | | 1 | 2 | | 1 | 3 | | 1 | 5 | | 2 | 2 | | 2 | 3 | | 2 | 6 | The problem is, to select only those client_id's if they have all the statuses i.e. 2,3,5 (status_id = 2 AND status_id = 3 AND status_id = 5) but mysql doesn't allow that directly.

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  • mysql query timer for .net

    - by acidzombie24
    Is there something i can use to track how long my mysql queries take? perhaps log them if they take a certain amount of time? or track all queries but only hold the longest query time? using this with C# .NET with ASP.NET. I'd like to use this to occasionally check if my queries are getting slow.

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  • data from few MySQL tables sorted by ASC

    - by Andrew
    In the dbase I 've few tables named as aaa_9xxx, aaa_9yyy, aaa_9zzz. I want to find all data with a specified DATE and show it with the TIME ASC. First, I must find a tables in the dbase: $STH_1a = $DBH->query("SELECT table_name FROM information_schema.tables WHERE table_name LIKE 'aaa\_9%' "); foreach($STH_1a as $row) { $table_name_s1[] = $row['table_name']; } Second, I must find a data wit a concrete date and show it with TIME ASC: foreach($table_name_s1 as $table_name_1) { $STH_1a2 = $DBH->query("SELECT * FROM `$table_name_1` WHERE date = '2011-11-11' ORDER BY time ASC "); while ($row = $STH_1a2->fetch(PDO::FETCH_ASSOC)) { echo " ".$table_name_1."-".$row['time']."-".$row['ei_name']." <br>"; } } .. but it shows the data sorted by tables name, then by TIME ASC. I must to have all this data (from all tables) sorted by TIME ASC. Thank You dev-null-dweller, Andrew Stubbs and Jaison Erick for your help. I test the Erick solution : foreach($STH_1a as $row) { $stmts[] = sprintf('SELECT * FROM %s WHERE date="%s"', $row['table_name'], '2011-11-11'); } $stmt = implode("\nUNION\n", $stmts); $stmt .= "\nORDER BY time ASC"; $STH_1a2 = $DBH->query($stmt); while ($row_1a2 = $STH_1a2->fetch(PDO::FETCH_ASSOC)) { echo " ".$row['table_name']."-".$row_1a2['time']."-".$row_1a2['ei_name']." <br>"; } it's working but I've problem with 'table_name' - it's always the LAST table name. //---------------------------------------------------------------------- end the ending solution with all fixes, thanks all for your help, :)) foreach($STH_1a as $row) { $stmts[] = sprintf("SELECT *, '%s' AS table_name FROM %s WHERE date='%s'", $row['table_name'], $row['table_name'], '2011-11- 11'); } $stmt = implode("\nUNION\n", $stmts); $stmt .= "\nORDER BY time ASC"; $STH_1a2 = $DBH->query($stmt); while ($row_1a2 = $STH_1a2->fetch(PDO::FETCH_ASSOC)) { echo " ".$row_1a2['table_name']."-".$row_1a2['time']."-".$row_1a2['ei_name']." <br>"; }

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  • Mysql change column details

    - by Ankur
    I am trying to redefine the number of varchars a column can have (in a MySQL db). I am doing alter table obj_details IMG_SRC IMG_SRC varchar(180); I want to change the number of characters that can be used in the column IMG_SRC to 180 (it is currently 100). But I get an error saying that I should check the syntax near IMG_SRC IMG_SRC varchar(180).

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  • How to kill locked mysql queries

    - by jcure
    Hi, I am creating and testing a mysql join query but each time so far it causes the database tables to lockup and the site hangs. I have to then call the host and they kill the locked queries. Is this something I can do from phpmyadmin so not to bother them while I tweak the script to work? Thanks for any reply.

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  • Sphinx Mysql Tutorial Help

    - by Frederico
    I have just implemented the Sphinx Storage Engine, and created my first Sphinx table, I'm trying to convert from using my Fulltext MyISAM table, so I figured I would just dump all the data into a sphinx table.. obviously I was wrong. Are there any great tutorials that really take you through transforming a fulltext search on MySQL to a sphinx table? Thanks in advance.

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  • Why would restarting MySQL make my site faster?

    - by beagleguy
    hey all, my site started dragging lately, the queries taking exceptionally longer than I would expect with properly tuned indexes. I just restarted the mysql server after 31 days uptime and every query is now substantially faster and the whole site renders 3-4 times faster. Would there be anything that jumps out at you as to why this may have been? Improper settings on my.cnf perhaps? Any ideas as to what I can start looking at to try and pinpoint why? thanks

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  • Always-indexed MySQL indexing/searching replacements for InnoDB?

    - by Chad Johnson
    I am using InnoDB for a MySQL table, and obviously queries using LIKE and RLIKE/REGEXP can take a lot of time. I've tried Spinx, and it works great, except I have to re-index context at intervals. I can re-index every minute, but I am wondering if there is either 1) a setting in Sphinx to keep records always indexed or 2) other software besides Sphinx that will keep records always indexed. I want it where that immediately upon inserting or updating a record, the index is updated.

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  • Using NULL in MySQL

    - by JPro
    The data in my dabatase comes from an external source and where ever there is no data passed, I keep NULL in those places. Can anyone tell me if there are any implications in using NULL to represent empty value? Should I follow some other convention like 'data_not_available'? or something like that? Can anyone suggest?

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