I am trying to find out the best way to do a simple table join on my two tables using a sqlite database in an android application. Is the simplest way to use CursorJoiner or is there any easier way?
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I'm trying to use Android SDK's SQLiteQueryBuilder to join two tables, let's call them t1 and t2, and query that table based on an attribute from each table, say t1.att1 and t2.att2, equaling a certain value. I'm a little confused on the syntax when it comes to the selection.
View 1 Replies View RelatedAnyone working with big sqlite tables and trying to match rows using patterns (for example for autocomplete purposes) ? recently i played with LIKE statement and it seems it will never use table index (if any), you have to use GLOB instead. but....... the weird thing is that you cannot use selectionParams in your query: you have to specify your pattern in selection like:
CODE:........
My words table has two TEXT columns: 'key' and 'value' and index on 'key'
For example: i have table with ~28000 rows and when using selectionParams my query took 1500 ms and without selectionParams 20 ms does it have anything to do with android or its sqlite weird feature?
Where do the tables created using SQlite database will be stored in Android? how to access them and see the data contained in them.
View 1 Replies View RelatedCause I am interested in the android, hope can join your groups.
View 2 Replies View RelatedI know there are some threads about how to join contacts but I know how to join them. Its just when I go to my contacts and press menu and join it doesn't list ANY of my contacts. On some contacts it'll suggest and even list all the contacts, but on the contacts I actually want to merge it doesn't give me that option.
View 6 Replies View RelatedI am after a code to get the available column names of a table in Android?
I looked around and didn't find anything.
I am currently working in samsung as a software engineer on android platform.
View 3 Replies View RelatedCould i join Android Developers group?
View 2 Replies View RelatedI want to join many facebook contacts with another gmail contacts but they have different name. the only thing that same is the email address.
is there any way to join them? (not manually).
Is there any apps for android to join huge files? It's more than 300mb
View 1 Replies View RelatedI'm new on Android. Now i want to join 2 files mp3 to one files (a.mp3, b.mp3 => ab.mp3) .
View 4 Replies View Relatedim running velocity .3 and thats it and i get the era android.process.acore force close.. plz help
View 1 Replies View RelatedI'm trying to reduce the number of queries I do to the Android's database. Basically I want to get any email or IM address that contains a user defined search term. Right now I'm doing two separate queries:
Email:...............
I need to display a single list, ordered by date which contains different types of data, images, video and whatnot.
I guess you could have one separate table for each type and the use something like FULL OUTER JOIN (simulated as sqlite doesn't support it) and sort on date. But this would be complicated because I still need to have unique IDs across all tables.
Maybe having a master list which has ID and date, and then JOIN in the types tables? But how bad is the performance of this using sqlite? I really like to avoid having a super table which contains columns all the combined types could ever need.
I want to operate on multiple tables. I searched a lot but everywhere I could find is single table with one content provider.
How can I use multiple tables under one content provider? How can I get result from two/three tables ?
Can I provide my own SQL select query from multiple tables in ContentProvider?
Can anybody give me any example or link where I can get idea?
I am trying to create a database with two tables. Employees and Computers. A spinner with employee names fill properly when I don't try create and do anything with the second table...
The code to create is:
CODE:.........................
Is there somehting I am doing wrong during the creating, as the rest of the code (to read data) is exactly the same...
Does anyone of you know how to create dynamic Tablelayouts? On my Emulator Android just shows nothing.
View 2 Replies View RelatedI created a data base named as example.db with some tables in SqlLite. It worked fine. It was also created in data/data/com.mypackage.myapp/databases/example.db. Now, I need to open that database and see the content in the database.
View 1 Replies View RelatedI am trying to throw 4 tables into a List<table> and then run a query on each through a loop... this isn't really working. ollowing code totally freehand as I had to undo the code I wrote because it wouldn't run :
//this first line is the one that I would imagine is the linchpin on getting this to work List<table> mTables = new List<table>(); mTable.add("character1") //add character 2 //add character 3 //add character 4 for (int i = 0; i < 4; i++) { mCursor = db.query(mTables.get(i), null null.......); mCursor.movetofirst;
//use ContentValue to update a few fields
I'd like to populate a listview from 2 tables. Anyone know how I can achieve this? Currently what I have looks like but it only works with one adapter.
View 1 Replies View RelatedI have this database file under the usual databases folder and a bunch of tables inside it. Please note that I don't want to retrieve under the command line. I know I can use the ".tables" command. I want to retrieve a list of all tables in it, using code, so that I can execute some specific algorithms on each of them. Also, I didn't find any questions with this problem on Android, so please forgive me if there is any. I was wondering if there is any function I can use under Databases, but I didn't find any either.
View 1 Replies View RelatedHow to retrieve data from two tables via the ContentProvider way? I.E. the database of Calendar application, include many tables including Events and Deleted, and some others. I want to retrive records in Events table, whose _sync_id field is also in Deleted table. Usually, we write a SQL sentence like: select (all fields in Events) from Events as e, Deleted as d where e._sync_id = d._sync_id or select * rom Events as e where e._sync_id in select _sync_id from Deleted etc. But, how can I accomplish it in the ContentProvider way? I saw ContentProvider.query take a Uri as the first parameter, but pity that I don't know how to build one that could fulfill my purpose.
View 2 Replies View RelatedI have about twenty pages of information that is stored in tables that needs to be stored in my Android application. Each column is a designated stop on a bus route and the column is filled with times that the bus will be at the stop. There is also certain information that needs to be associated with some times, such as if the bus is handicap accessible at a certain time.
Here is an example of one of the tables: Bus Times
I have thought about using a SQL lite as that seems as though it would be able to store these tables quite easily; but when I think of using SQL I think of dynamic data storage and this shouldn't be changing more than once a year.
Is SQL appropriate for this application? Is there a better way to do this?
Is it possible to join a Microsoft Office Communicator call via VPN? At the moment I am able to connect to my office VPN (via Cisco AnyConnect app) , but I am lost as to how I can take my communicator calls on my phone.
Right now I have to boot up my laptop, connect to the VPN and take the call on my laptop, which is quite inconvenient especially when I'm out and about. It would be great if I could just do all this on my phone (a 1st gen Galaxy Note).
Does Android have a "best practices" guideline on creating & populating the db/tables programmatically vs. deploying a .db file in assets?
What are the pros/cons of both approaches?
I have a db with big long strings in several columns, and about 50 rows, so writing the insert statements alone would take quite some space. It seems a waste.
I am new to Android and i would like to know if there's any tool to see databases (.db) tables and data into these tables.
View 4 Replies View RelatedHow to create two or more tables in one database in single class which extends sqliteopenhelper in one function oncreate.
View 2 Replies View RelatedNow I've done a bit of research into Fusion tables already and I know it's possible for me to put all the data that's going to be in my app into a fusion table and then display the fusion table there for the user to see the data. Much easier to update the data when need be instead of making it static text and having to update the app via the play store every time I need to update the data.
How do I do this though? All I know is that it's possible and that I should use the Fusion table API. More than anything I just need a starting point so I know how to set up Eclipse and then learning the code is up to me.
Any apps at the moment that use Fusion tables to hold their applications data? Would be good to download them and have a play.
I just encountered the following situation. I have an Android app with a scenario which I guess may happen in multiple apps. It's about tagging/labeling/categorizing, call it as you want.After CommonsWare's feedback here a bit of a clarification. I'm weird about doing the second query to the DB inside the CursorAdapter, basically this would result in one query per row and I fear this will heavily impact my performance (I've still to test it on a real device with a substantial amount of data to see how much this impacts).My question therefore is on whether there are some strategies on how to avoid this given my data model or whether I have to basically "live" with that :)
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