Posted by: Radek Wojcik 6 years, 1 month ago
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
This is a handy tool for small django websites. Some handy commands :
Load up sqlite3 with a database
Check schema of a table
#show tables .tables #help .help
Create a database
mkdir /home/sqlite chmod daemon /home/sqlite touch sample.db chmod daemon /home/sqlite/sample.db
Creating sample data
Use your favorite text editor to create the following file and save it as music.sql:
create table music(artist varchar(40), title varchar(60)); insert into music values('Beastie Boys','Paul''s Boutique'); insert into music values('John, Elton','Goodbye Yellow Brick Road'); insert into music values('Parliment','Mothership Connection');
Load and verify
sqlite3 sample.db < music.sql sqlite3 sample.db 'select * from music;'
Now use the file you just created to populate your sample database.
Note: Pay particular attention to the repeated single quote in Paul''s Boutique. This is not a typo, it is how SQL escapes literal single quotes. If you forget to do this when entering data, you'll see an error about an incomplete SQL statement.
Backing/Restoring up the database
To make a backup copy of the database, simply do a "dump" and redirect the results to a file.
cd /home/sqlite sqlite3 sample.db .dump > sample.bak # Can also dump by name sqlite3 sample.db ".dump 'table1' 'table2'" #Restoring the database cd /home/sqlite mv sample.db sample.db.old sqlite3 sample.db < sample.bak
References: http://www.sqlite.org/Share on Twitter Share on Facebook