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  • Good book for sql

    - by Uday
    I always considered database as a storage . but never thought it can be used for querying across tables etc. Which is a good book for sql for a developer. not just the syntax. How to write a query in different ways How internally queries are executed.etc especially related to microsoft sql server

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  • restoring with mysqldump, but where is the data?

    - by Ole Media
    Ok, so I'm in need to restore a table and I do: mysqldump --opt database table_name < table_name.sql I hit enter and Done! Well, not really, when I go to see if there is anything on the table it show 0 records. I have look into the table_name.sql and I see two records. What am I doing wrong?

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  • Is there a way to visualize records stored in an iPhone app via Core Data?

    - by Justin Searls
    I have an app which, for good reasons, can only be debugged on a device. I'm using Core Data for the first time, and I'd like to be able to easily inspect the records that are stored by the app on the device. I imagine that Core Data is by default backed by SQLite on the iPhone, so this question might be as simple as asking: "What's the easiest way to extract the SQLite database for an app installed by Xcode without jailbreaking it?" Any experience someone could lend regarding this would be greatly appreciated.

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  • Session vs singleton pattern

    - by chobo
    Hi, I have a web application where I would like to pull user settings from a database and store them for Global access. Would it make more sense to store the data in a Singleton, or a Session object? What's the difference between the two? Is it better to store the data as an object reference or break it up into value type objects (ints and strings)? Thanks!

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  • Is it possible to integrate user databases between Drupal and an ASP&SQL Server platform?

    - by hecatomber
    We have a game project designed on ASP&SQL Server, and we need to integrate it's user database with Drupal. This would be easier from Project to Drupal (since there is user_save and user_delete functions available globally by using drupal bootstrap) but I'm not sure if we can execute PHP functions on an ASP platform. Is there any documentation for this kind of problems? What do you suggest?

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  • How to Unselect The Field in select Query using sql

    - by raam
    hi in my database i am store more than 50 field with primarykey (Auto increment) i am not sure about the fields name but i wants to select the entire data in that table , i am using SELECT * FROM tablename i want to select all the fields except that ID but this query populate the entire table so is there is possible to unselect the particular field in the select query. Can anyone have an idea please guide me. Thanks in Advance

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  • Java Swing - Adding a row # column to a JTable

    - by llm
    I have data from a database loaded into a JTable through a custom table model. I want to have a column (should be the first column) which simply shows the display row number (i.e. it is not tied to any data (or sorting) but is simply the row number on the screen starting at 1). These "column headers" should be grayed out like the row headers. Any idea how to do this? Thanks

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  • Can php query the results from a previous query?

    - by eaolson
    In some languages (ColdFusion comes to mind), you can run a query on the result set from a previous query. Is it possible to do something like that in php (with MySQL as the database)? I sort of want to do: $rs1 = do_query( "SELECT * FROM animals WHERE type = 'fish'" ); $rs2 = do_query( "SELECT * FROM rs1 WHERE name = 'trout'" );

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  • XML Import how would you do it?

    - by Rico
    XML is used as one of our main integration points. it comes over by many clients at a time but too many clients importing at the same time can slow down our database to a crawl. Someone has to have solved a problem like this. I am basically using VB to parse through the data and import what i want and don't want. Is there a better way?

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  • Hibernate query cache automatically refreshed on external update?

    - by artgon
    I'm creating a service that has read-only access to the database. I have a query cache and a second level cache enabled (READ_ONLY mode) in Hibernate to speed up the service, as the tables being accessed change rarely. My question is, if someone goes into the DB and changes the tables manually (i.e. outside of Hibernate), does the cache recognize automatically that it needs to be cleared? Is there a time limit on the cache?

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  • How to store data which contains quotes in MySQL

    - by Nitz
    In one of my forms I use the rich text editor from Yahoo!. Now i want to store the data from that textarea in a MySQL database. The user can enter anything in that textarea, e.g. many double or single quotes. How can I store that data? Normally we store by adding that data in one variable and then put that in sql, but the quotes cause problems.

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  • How to get number of attributes in a java class?

    - by llm
    I have a java class containing all the columns of a database table as attributes (member variables) and corresponding getters and setters. I want to have a method in this class called getColumnCount() that returns the number of columns (i.e. the number of attributes in the class)? How would I implement this without hardcoding the number? I am open to critisims on this in general and suggestions. Thanks.

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  • Forward DB requests after a DB move in SQL Server

    - by Nissan Fan
    I've moved database from one SQL Server instance on a machine to another machine completely. Is there any way to forward requests to the new server automatically so it doesn't require client config changes? Keep in mind it's only one DB out of many on the original server so I can't just forward all requests.

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  • How to test if a table is empty, using Hibernate

    - by landon9720
    Using Hibernate, what is the most efficient way to determine if a table is empty or non-empty? In other words, does the table have 0, or more than 0 rows? I could execute the HQL query select count(*) from tablename and then check if result is 0 or non-0, but this isn't optimal as I would be asking the database for more detail than I really need.

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  • How do I do cron job for list of URLS

    - by mathew
    HI I do have a list of urls and my site is giving information about indexing and back links of any website out their. so what I want is I do have thousands of website lists with me and I want all that to run and store it in my database. so how do I do it using crone job?? the url address is for example www.mydomain.com/search?url=www.google.com so after google.com another one and all which is in the list.

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  • Which is more efficient in mysql, a big join or multiple queries of single table?

    - by Tom Greenpoint
    I have a mysql database like this Post – 500,000 rows (Postid,Userid) Photo – 200,000 rows (Photoid,Postid) About 50,000 posts have photos, average 4 each, most posts do not have photos. I need to get a feed of all posts with photos for a userid, average 50 posts each. Which approach would be more efficient? 1: Big Join select * from post left join photo on post.postid=photo.postid where post.userid=123 2: Multiple queries select * from post where userid=123 while (loop through rows) { select * from photo where postid=row[postid] }

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  • How can I find columns which have non-null values?

    - by aartist
    I have many columns in oracle database and some new are added with values. I like to find out which columns have values other than 0 or null. So I am looking for column names for which some sort of useful values exists at least in one row. How do I do this? Update: This sounds very close. How do I modify this to suit my needs? select column_name, nullable, num_distinct, num_nulls from all_tab_columns where table_name = 'SOME_TABLE'

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  • Checking if folder has files

    - by phenevo
    Hi, I have program which writes to database which folders are full or empty. Now I'm using bool hasFiles=false; (Directory.GetFiles(path).Length 0) ? hasFiles=true: hasFiles=false; but it takes almost one hour, and I can't do anything in this time. Is there any fastest way to check if folder has any file ?

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  • Mutiple FK columns all pointing to the same parent table - a good idea?

    - by Randy Minder
    For those of you who live and breath database design, have you ever found compelling reasons to have multiple FK's in a table that all point to the same parent table? We recently had to deal with a situation where we had a table that contained six columns which were all FK columns to the same parent table. We're debating whether this indicates a poor design on our part or whether this is more common than we think. Thanks very much.

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