A popular open-source embeddable (i.e. non client-server) RDBMS implemented as a C library.

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2answers
320 views

Install DBeaver SQLite driver offline?

I'd like to use DBeaver with SQLite, but the network firewall disallows external connections. So DBeaver cannot download the driver automatically. Where can I download the SQLite driver for it and ...
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2answers
281 views

Sqlite query slow whilst it should be fast

I have the following query: SELECT breakType,date,blockname,modname,metadata,nbtdata,x,y,z FROM BlocksBrokenByExplosion WHERE dimension=0 AND y>60 AND y<70 AND x>150 AND ...
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2answers
1k views

SQLite CSV import won't create a table automatically

According to https://www.sqlite.org/cli.html#csv, sqlite> .mode csv sqlite> .import C:/work/somedata.csv tab1 There are two cases to consider: (1) Table "tab1" does not previously ...
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votes
1answer
72 views

Issue with accented characters in SQLiteStudio

I downloaded a SQLite 3 dump of Northwind, and opened it in SQLiteStudio. Accented characters aren't displayed nicely. How to solve the issue? I suspect some encoding issue.
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1answer
971 views

ON DELETE CASCADE not deleting entry for foreign key

I am running the below query in ideone CREATE TABLE AUTHOR ( AUTHOR_ID NUMBER(5) PRIMARY KEY, AUTHOR_NAME VARCHAR2(18) ); INSERT INTO AUTHOR (AUTHOR_ID, AUTHOR_NAME) VALUES (1234, 'MC GRAW HILL'); ...
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1answer
26 views

Retrieve index column

I have this index schema: CREATE index comments_idx ON comments (books) How can I retrieve column name ("books") through SQL query?
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1answer
63 views

Query executes fast, but keeps the table locked for some time

Executing the following query is very fast (75ms), but removing the comment from the last row it becomes slow (2.5s), and the time increases exponentially with the number of rows in the table. It ...
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2answers
113 views

One table with a flag or two tables

I have a problem with the design of a database: In my Android application i need to store the upload (the status, so if the file is in upload it will report the % of the upload) of a file and a list ...
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1answer
138 views

PHP SQLite Admin is running on PHP 5.4

I tried phpsqliteadmin But it doesn't seem to work anymore on PHP 5.4. There are several alternatives, but none of them seems to be "The One" that is maintained and widely used. Is there a standard ...
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1answer
1k views

Database design for mobile app

At first I would like to say hello to all of you, since it is my first post here on DB Administrators. I am writing an app which store drinks and their data. At the beginning it was storing all in ...
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2answers
177 views

How to optimize query

I'm using SQLite3 and the following query, It seems like there should be a better performing way to write this query; Is there? Select Name, Sum(Case When Used ...
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1answer
828 views

nesting MAX for SELECT

I have a table, containing TV series episodes: series: | series_id | season | episode | title | 1 | 1 | 18 | xxx | 1 | 2 | 3 | xxy | 3 | ...
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votes
1answer
350 views

No such column error jdbc

Suppose I have a table: SERVICE={SID,NAME,PORT} and with the help of a Java program, I want to select the SID of the known port with the help of a SQL query: Select SID from SERVICE ...
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1answer
54 views

Order result by number of occurence of a word in a text

I am working with sqlite3/python . I would like to order results by the number of occurence of %@% in text. For exemple Jimmy 10 // Jimmy wrote 10 strings like %@% James 2 Sophia 0 ..etc The ...
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votes
1answer
460 views

Keep rows only if Date exists in both table

This is my first time here, so please bear with me. Assuming i have 2 table, Table 1 Date | Closing 1/1/2013 | 1 2/1/2013 | 2 Table 2 Date | Closing 1/1/2013 | 3 3/1/2013 | 4 What sql statements ...
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votes
1answer
100 views

Performance: order of tables in joined statement

I have the following SQL statement, running on a SQLite database on a Windows mobile device. SELECT table1.uniqueidentifier1, table1.int1, table1.varchar1, table1.decimal1, table1.decimal2 ...
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2answers
110 views

Advice on scripting a “whitewashed” and downsized development db from main db

Currently we (an active opensource project) have a large PostgreSQL production database which contains all the site records. Since we can't just allow every developer or contributor access to the ...
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votes
1answer
862 views

How to output query to file using SQLite3

Is there an equivalent to Oracle's spool for sqlite3?
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votes
1answer
982 views

Delete with subquery with no unique columns

I have a table LIKES (ID1, ID2). Both id1 and id2 are non unique columns. Database is SQLite delete from LIKES where ID1 = 10 /// Wrong there more then one record with ID1=10 delete from LIKES ...
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2answers
727 views

How can I simplify this query?

I have written the following SQLite query: SELECT sum(amount) / (julianday('now', '+1 day') - julianday('2012-08-11')) * 14 AS 'Cost Per Fortnight' FROM ( SELECT "transaction".transamount AS ...
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votes
1answer
386 views

Structuring SQLite database with 2 relationships?

I'm current working on a SQLite-database in a android project which will store 3 types of objects; feed, users and posts. There will be several feeds containing several varying users(a user can be ...
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votes
1answer
356 views

Store a small log file as a blob in sqlite

I am utilizing a small sqlite database to keep track of some jobs that run on a linux box. Most of them have small (less than 50 lines) log files... I'd like to store those log files as a record in my ...
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2answers
132 views

Very slow request with small difference

I use sqlite3 on a Mac Mini. I'm a Java and Web programmer, with some SQL experience, not as much as an expert. I have three requests. First and second are fast (0.2s), and the third is very slow ...
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0answers
23 views

Suitability of sqlite vs sql server compact or local db [on hold]

I am currently using sqlite with my C# application. The issue why I need this is for simple deployment using the clickonce. I could not use mysql here is cause of steps needed for its depolyment. I ...
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1answer
26 views

How to get average of views before clicking on advertisement?

I've got two tables containing information about viewing and clicking on advertisement by each user: Clicks: userID Action Time 123 c 2016-01-08 01:57:00 123 c 2016-01-11 ...
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0answers
8 views

how to directly import a csv gzip'ed file into SQlite 3?

I'd like to import a 15GB file comma delimited gzip compressed file into Sqlite 3 without having to use temporary files. I'd like to run a command like: zcat input/surgical_code.csv.gz | tail -n ...
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0answers
18 views

Seeking Alternative To TEMPORARY Table For Limited Permissions [closed]

The following query is valid but I do not have permission to create tables. I am seeking an alternative with equivalent results. CREATE TEMPORARY TABLE temp_id(temp_name VARCHAR(50),id INT); INSERT ...
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0answers
36 views

Optimization beyond creating indexes

From the Explain query Output i already created db.execute("CREATE INDEX x1 ON TRAVELDAYS(Day, Value);") db.execute("CREATE INDEX x2 ON TRAINS(TrainDaysUID);") db.execute("CREATE INDEX x3 ON ...
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votes
1answer
40 views

sqlite database table with 1000's of columns

I am using sqlite3 in an application to conduct an alalysis of distances between sets of points. Distances between these points have been precomputed using dijkstra's algorithim and left me with a ...
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0answers
26 views

Sqlite memory management [migrated]

I am using sqlite browser to run some queries. In case of queries which return huge data, sqlite consumes large amount of RAM and does not free it until the browser is closed / killed. Is there a way ...
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0answers
17 views

How to get row position in sqlite after sorting?

I have table, UUID | INT | LONG AAA | 1 | 123 BBB | 3 | 241 CCC | 2 | 145 And i sort it by INT value. SELECT * FROM table ORDER BY int_val DESC then i want to get a row from table and ...
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0answers
15 views

SQLite: choosing a unique separator

I'm working on a project that will result in an SQLite database of about 6 GB of text content (encoded UTF-8). The text will be diverse: it will have a great deal of plain text writing, but also a ...
0
votes
1answer
23 views

Combine 2 SQLite result sets to calculate percentage

I have a single sqlite table that I'm trying to pull two resultsets from and then calculate the percentage. Table columns: email Location Clicked? Test# Test# 123 has a list of users (identified ...
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0answers
16 views

Switching SQLite environments

I submitted this on SuperUser without response; someone suggested I try it here. I like Firefox's SQLite Manager plugin because it's easy to show people how to use it. This is helpful if I want to ...
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0answers
52 views

How to import data from Sqlite into SQL Server 2012

I need to import data from sqlite into SQL Server so we can include it in our data warehouse. Based on previous system volume. Id expect there to be 50-100,000 rows after a couple of years. For ...
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votes
0answers
23 views

force SQLite view column type affinity

Using SQLite 3, I have some view columns which are defined with an expression, and so have no type affinity. Is it possible to define them in a way that forces them to have a certain type affinity? ...
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0answers
29 views

No foreign key constraint with PRAGMA foreign keys

This is my code. It's SQLITE3 in Python 3. conn = sqlite3.connect(db) c = conn.cursor() c.execute('BEGIN') c.execute("PRAGMA foreign_keys = ON") c.execute('CREATE TABLE ...
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0answers
59 views

Database design for storing historical stock exchange Level2 (depth) data

I am developing C# software using embbeded SQLite Database which shows historical level2 (market depth - asks/bids) stock exchange data graph. Example Simply speaking, there are 25 asks (price, ...
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0answers
19 views

Structure of an SQLite database for storing analytics with counters and hits

Before making this post, I referred to this and this which contain extremely complex solutions and hence, this question: I am building a spam filtering app that takes posts from a feed and deletes ...
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0answers
50 views

SQLite no such column: table.columnName

I have a query SELECT Bookies.Name, Exchanges.Name, Bets.Completion_Date, Bets.BMStake, Bets.Liability, Bets.Profit, Bets.Type, ...
0
votes
1answer
94 views

Create an “int” column forced between 0 and 3

I would like to create a table with one column that would be of type "integer", and locked between 0 and 3. Is this possible? My goal would be to have this column so that I could just execute a ...
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votes
0answers
44 views

SQLite table design for PK and/or UNIQUE

I'm trying to design a table in SQLite3, where I can perform these 2 actions. INSERT new row where a unique primary key is created. And INSERT new row with an given primary key Think of a ...
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votes
0answers
23 views

Updating values with randomly generated values?

I've got an .sqlite3 database here. I want to replace all the values of a set distinct number of columns in the database with randomly generated values (the values should be unique). At the moment ...
0
votes
1answer
86 views

SQLite optimizations for possible huge data storage

I want use SQLite database as the storage for possible huge data size, I need some comments about optimization to keep stability (like unexpexted epic fails, BSOD for example) with fast access speed. ...
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votes
0answers
25 views

Storage strategy for polynomials

What is the most space efficient way to store arbitrary length univariate polynomials? I have a large amount of polynomials that look like 3*x^7 + 12*x - 13 9*x^32 - x^14 + 2*x^3 - 9 ... Each ...
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0answers
136 views

Get milliseconds from a DateTime in Sqlite3?

I have this DateTime in my database: 20130420070028401 is suppose to be: 2013-04-20T07:00:28.401 To "get" the milliseconds from 1970 I'm sub-stringing the DateTime: ...
0
votes
1answer
68 views

Having four different tables or having one table with one more field?

I have a website with 4 translation (That is Arabic with 4 different Persian translation), and I had exported each of these translations to different tables. Which one of these ways are faster and ...
0
votes
1answer
344 views

can't create foreign key in sqlite

I'm trying to run this code in sqlite: sqlite> CREATE TABLE test(id integer primary key AUTOINCREMENT, page varchar(10), dp_record_id integer, foreign key (webserver_id) REFERENCES ...
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0answers
178 views

How to divide a big SQL Query into small query

I am trying to traverse the whole file system. I am picking each and every file and then trying to insert it into the SQLite Database. Before inserting I am also calculating the checksum of each file. ...
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0answers
31 views

Help in Designing a CBT database

Please i need help in modifying or remaking the database so that i can mark answers to questions immediately. The problem is some courses have 50 questions, while others have 100. How can i design ...