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

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how to import .xls file into SQLite database?

I have an issue with importing .xls file into SQLite database. I am working on windows xp and using a SQLite manager for maintain the database. I can import the .csv file to the database by using ...
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0answers
222 views

Regular Expression Integrity Constraints in SQLite3

In a SQLite3 CREATE TABLE statement, can I use a regular expression to enforce a particular constraint? Specifically, I am trying to require that an inputted URL is valid. I know there are other ways ...
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2answers
6k views

What program should I use to open .db3 files?

I have a series of .db3 files in my computer. They are like filename1.db3, filename2.db3, filename3.db3, filename4.db3 and so on. I can open filename1.db3 with sqlite editor. But when I open ...
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2answers
53 views

How to JOIN each row ON NOT IN ( SELECT … )?

Say I have a table of users, songs, and songs played. users id: int songs id: int songs_played user_id: int song_id: int If I want to, for each user, find a song that has not yet been played. How ...
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1answer
390 views

How SQLite index ID (or line number)

SQLite is based on a flatfile, and store virtual tables in a flatfile (I think based on offset, correct me if I'm wrong). But how it index the Primary Key (ID), which I think is identical to line ...
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1answer
616 views

Text string stored in SQLite Integer column?

I'm a database novice looking at an SQLite database which appears to be storing text in an integer column. Here's an example session at the sqlite3 command line: sqlite> .schema mytable CREATE ...
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2answers
48 views

How to use relationships to extract data via select

Disclaimer: Novice in SQL I have 3 tables. There is one "major" table (labeled used_for_lookup below) used to do look-ups on and the other two (labeled fid_table and did_table below) are foreign keys ...
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1answer
39 views

Trigger with multiple inserts based on JSON data

I am using sqlite and have its json1 extension available. I have the following tables (reduced to a minimal example): -- table filled from external source, -- with only a little possible impact on ...
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1answer
70 views

Add row after every rows of a table from select statement

There are two tables. I want to add every record of one table under every record of the other table. The two tables and the result table are shown below. TABLE_1 TABLE_2 TABLE_3 TYPE ...
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2answers
664 views

Group by + Order by Behavior Explanation? [duplicate]

Suppose I have: Product(_id,Name) Provider(_id,Name) Provides(ProductId, ProviderId, Price) If I want to obtain the providers who sell the most expensive products, and whose name starts with A. ...
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1answer
3k views

What's a good workbench tool for sqlite similar to MySQLWorkbench for MySQL? [closed]

What's a good workbench tool for sqlite similar to MySQLWorkbench for MySQL? I'm used to MySQLWorkbench for working with MySQL databases. Now I have some sqlite databases to work with and would ...
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1answer
241 views

Foreign key double inheritance SQLITE

I'm designing a domotic system database and I'm trying to figure out how to represent two foreign keys. This is the cardinality I want. Consider 1...N Areas (rooms, halls, kitchens, etc.): Area 1 - ...
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2answers
120 views

Problem in Nested Query [closed]

I have a query like this SELECT m.title FROM Movie AS M WHERE (SELECT MAX(r.stars) FROM rating AS r WHERE r.mID = M.mID); I want to show the MAX(r.stars) in my result set, what am I doing wrong?
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1answer
55 views

Should the value of a select max be indexed when the where clause is already indexed

I have a customer_orders table in a schema designed to be shared between multiple companies. Each customer_order has an invoice number that should always start at 1 and increment based on company (...
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1answer
212 views

SQLite: updating string values

I couldn't find any answer for my question so I'm writing. Are there any restrictions for updating strings in SQLite database ? I'm wondering if any new value is written into database file there ...
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1answer
14 views

A different number of AFTER INSERT trigger alarms in SQLite and SQL Server

I have trigger CREATE TRIGGER [Foo] AFTER INSERT ON [Bar] BEGIN UPDATE Log SET count = count + 1; END When i execute query insert into Bar (ColumnName) values ('SomeValue1'), ('SomeValue2'), (...
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1answer
17 views

Matching separate unicode characters as one

I am writing a C# program, and I'm querying a SQLite database. I have multiple diacritical characters (e.g ã, õ, ó, ê) which I need to match in my search. I have the command "SELECT * FROM ...
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1answer
46 views

SQLite3 foreign key mismatch

I have following SQLite3 statement inside Qt/C++ class method: bool UeSettings::ueSaveSettings(const QString& address, const QString& port, ...
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1answer
39 views

Can sqlite dump database schema in a fixed order?

I am using SQLiteStudio 3.0.7 to dump the database schema regularly for versioning purposes and it seems to change the order of the table definitions at random. This wreaks havoc on the diffs as even ...
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1answer
129 views

Derived classes with same base class and class specific ids

I have three classes in my project. One base class and two derived classes. public class Animal { public long Id { get; set; } public DateTime Created { get; set; } public string Name { ...
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1answer
253 views

Efficient way to get last 10 rows of each group in SQLite, can CTE help?

Consider there is a table of job runs history with the following schema: job_runs ( run_id integer not null, -- identifier of the run job_id integer not null, -- identifier of the job ...
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2answers
33 views

Is there a more satisfactory query to get the rows of 'A' ordered by the number of rows of 'B' associated with that row of A in SQL

Suppose I have two tables A and B. Table A has a primary key, A.ID for instance, and each row in B contains a reference to some A.ID (there is a foreign key column in B). As a specific example: A: ...
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1answer
37 views

SQLite Data Types In Context of Disk Space

I would like to better understand which data types in SQLite take up more disk space. I've looked through official documentation but could not find anything in context of storage space. Any guide ...
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2answers
563 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
474 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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1answer
117 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
2k 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
29 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
66 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
137 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
152 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
181 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
1k 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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1answer
441 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 ...
0
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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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1answer
608 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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1answer
101 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
114 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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1answer
977 views

How to output query to file using SQLite3

Is there an equivalent to Oracle's spool for sqlite3?
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1answer
1k 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
798 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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1answer
412 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 ...
0
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1answer
379 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
136 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 (7s)...
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1answer
33 views

Designing database containing code metadata

I'm working on a program that disassembles programs and analyses the results. I decided to use SQLite to store the data, but I'm having trouble deciding on how to organize the data. The design I'...
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0answers
18 views

SQLite text columns

When having a table in SQLite that has a TEXT data type, is there any implication if the length of the contained string differ significantly?
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35 views

Recover data from a corrupted, encrypted SQLite database file

We use the System.Data.SQLite library to use SQLite in .NET applications, which allows the database file to be encrypted with a password. We have a user who is getting an error that the database disk ...
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0answers
31 views

Sync, not import, CSV files with SQLite

In MySQL I have observed that under table options, the storage engine can be configured as a CSV file. This gives me a nice clean csv file in the database directory. This file doesn't come with column ...
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1answer
33 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 ...