Why am I unable to query my sqlite db?

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There are ten answers to this question.

Best solution

How to query an SQLite db in batches

I am using C# with .NET 4.5. I am making a scraper which collects specific data. Each time a value is scraped, I need to make sure it hasn't already been added to the SQLite db. To do this, I am making a call each time a value is scraped to query against the db to check if it contains the value, and if not, I make another call to insert the value into the db. Since I am scraping multiple values per second, this gets to be very IO-intensive, with constant calls to the db. My question is, is there...

Answer:

I see three approaches: Use INSERT OR IGNORE, which will reject an entry if it is already present (based...

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blizz at Stack Overflow Mark as irrelevant Undo

Other solutions

How can I set the locking status of my SQLite database using java?

I want to create a SQLite DB using the jdbc driver sqlitejdbc-v056.jar. When I try to run the create query of a table, it returns me the error: java.sql.SQLException: database is locked. SQLite has five locking states: Unlocked, Shared, Reserved, Pending...

Answer:

Default is normal; for exclusive use PRAGMA [db_name.]locking_mode = EXCLUSIVE; The part between [ and...

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Klaas V Innocentisart at Quora Mark as irrelevant Undo

Answer:

if you call 'sqlite3 test.db' you find the test.db file in your current path :) have a look in the sqlite...

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Christian Assing at Quora Mark as irrelevant Undo

Why using SQLite as DB engine during tests fails in django?

When I switch to mysql everything will work fine as expected .But when I change db to sqlite it throws me errors.

Answer:

Are you using South? In the more recent versions it runs migrations during tests unless explicitly disabled...

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Seán Hayes at Quora Mark as irrelevant Undo

Compatible grouped query for PostgreSQL and sqlite?

I'm making kind of "popular bookmarks" with RoR. I wrote query below. Bookmark.select("*, count('item_id') AS cnt").group("item_id").order("cnt DESC").limit(60) It works on local sqlite3 server but doesn't work...

Answer:

Using the same database technology in ideally the exact same version is preferable over testing that...

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Thomas Klemm at Quora Mark as irrelevant Undo

SQB DB complex query problem?

Hello, I am in a bit of corner here - I have a three tables in my DB. users(ID, login, fname, lname); relation(ID, userA_ID, userB_ID) and a temp table temp(ID, loginA, loginB). Temp table contains relation between two users in a manner of their logins...

Answer:

insert relation (UserA_ID, Userb_ID) select A.ID, B.ID from temp T inner join Users A on A.login = T...

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Mantas D at Yahoo! Answers Mark as irrelevant Undo

What open source tools are available to migrate from SQLServer to SQLite?

I have a continuous integration system setup for one of my pet projects. I am using MS-SQLServer as db. For each build I dont want to connect to same MSSQLServer and interact with it, as its taking really long time. I know that Tests running on SQLite...

Answer:

Have you considered using LocalDB? Announcing SQL Server 2012 Express LocalDB RC0

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Sethu Srinivasan at Quora Mark as irrelevant Undo

Software development query?

Hi, I am Developing a software project in c#.net and using postgresql as database.i am fairly new to the postgres db and I am trying to connect to the DB thru c#.net code (i m using VS 2005 as IDE). I have tried all the 3 DB drivers (OLEDB,ODBC,Npgsql...

Answer:

Make sure that you have all of the applicable drivers and framework installed. If you are using VS2...

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Yahoo! Answers Mark as irrelevant Undo

Can I Query Cassandra columns with Pycassa?

I have Cassandra DB similar to this: key | name | client 1        A               C1 2        B          C2 3        C          C1 I access to my cassandra db with Pyhton (pycassa). Is there a way to query the database in order to get the clients with...

Answer:

No, there is no built-in way of doing that. You would need to keep track of occurrences manually using...

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Drew Kutcharian at Quora Mark as irrelevant Undo

Access 2007 form combo box selection to run find duplicates query and populate results in sub-form for editing?

My db has SchoolTable that shows all accounts, MainScreen to select sales rep from a combo box (SalesRep from SchoolTable) and have query results populate a sub-form (InputForm). I have Search_Rep query ([Forms]![MainScreen]![Combo0]) set to run On Change...

Answer:

look it up on google

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Yahoo! Answers Mark as irrelevant Undo

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