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SQLITE3


Section: User Commands (1)
Updated: Mon Apr 15 23:49:17 2002
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NAME

sqlite3

– A command line interface for SQLite version 3


 

SYNOPSIS

sqlite3

[options]

[databasefile]

[SQL]


 

SUMMARY

sqlite3

is a terminal-based front-end to the SQLite library that can evaluate
queries interactively and display the results in multiple formats.
sqlite3

can also be used within shell scripts and other applications to provide
batch processing features.


 

DESCRIPTION

To start a
sqlite3

interactive session, invoke the
sqlite3

command and optionally provide the name of a database file. If the
database file does not exist, it will be created. If the database file
does exist, it will be opened.


For example, to create a new database file named "mydata.db", create
a table named "memos" and insert a couple of records into that table:


$
sqlite3 mydata.db


SQLite version 3.1.3

Enter ".help" for instructions

sqlite>
create table memos(text, priority INTEGER);


sqlite>
insert into memos values(‘deliver project description’, 10);


sqlite>
insert into memos values(‘lunch with Christine’, 100);


sqlite>
select * from memos;


deliver project description|10

lunch with Christine|100

sqlite>



If no database name is supplied, the ATTACH sql command can be used
to attach to existing or create new database files. ATTACH can also
be used to attach to multiple databases within the same interactive
session. This is useful for migrating data between databases,
possibly changing the schema along the way.


Optionally, a SQL statement or set of SQL statements can be supplied as
a single argument. Multiple statements should be separated by
semi-colons.


For example:


$
sqlite3 -line mydata.db ‘select * from memos where priority > 20;’



    text = lunch with Christine

priority = 100



 

SQLITE META-COMMANDS

The interactive interpreter offers a set of meta-commands that can be
used to control the output format, examine the currently attached
database files, or perform administrative operations upon the
attached databases (such as rebuilding indices). Meta-commands are
always prefixed with a dot (.).


A list of available meta-commands can be viewed at any time by issuing
the ‘.help’ command. For example:


sqlite>
.help


.databases List names and files of attached databases
.dump ?TABLE? … Dump the database in an SQL text format
.echo ON|OFF Turn command echo on or off
.exit Exit this program
.explain ON|OFF Turn output mode suitable for EXPLAIN on or off.
.header(s) ON|OFF Turn display of headers on or off
.help Show this message
.import FILE TABLE Import data from FILE into TABLE
.indices TABLE Show names of all indices on TABLE
.mode MODE ?TABLE? Set output mode where MODE is one of:
csv Comma-separated values
column Left-aligned columns. (See .width)
insert SQL insert statements for TABLE
line One value per line
list Values delimited by .separator string
tabs Tab-separated values
tcl TCL list elements
.nullvalue STRING Print STRING in place of NULL values
.output FILENAME Send output to FILENAME
.output stdout Send output to the screen
.prompt MAIN CONTINUE Replace the standard prompts
.quit Exit this program
.read FILENAME Execute SQL in FILENAME
.schema ?TABLE? Show the CREATE statements
.separator STRING Change separator used by output mode and .import
.show Show the current values for various settings
.tables ?PATTERN? List names of tables matching a LIKE pattern
.timeout MS Try opening locked tables for MS milliseconds
.width NUM NUM … Set column widths for "column" mode
sqlite>


 

OPTIONS

sqlite3

has the following options:


-init file


Read and execute commands from
file

, which can contain a mix of SQL statements and meta-commands.

-echo


Print commands before execution.
-[no]header


Turn headers on or off.
-column


Query results will be displayed in a table like form, using
whitespace characters to separate the columns and align the
output.
-html


-line


Query results will be displayed with one value per line, rows
separated by a blank line. Designed to be easily parsed by
scripts or other programs
-list


Query results will be displayed with the separator (|, by default)
character between each field value. The default.
-separator separator


Set output field separator. Default is ‘|’.
-nullvalue string


Set string used to represent NULL values. Default is ”
(empty string).
-version


Show SQLite version.
-help


Show help on options and exit.




 

INIT FILE

sqlite3

reads an initialization file to set the configuration of the
interactive environment. Throughout initialization, any previously
specified setting can be overridden. The sequence of initialization is
as follows:


o The default configuration is established as follows:




mode = LIST
separator = "|"
main prompt = "sqlite> "
continue prompt = " …> "


o If the file
~/.sqliterc

exists, it is processed first.
can be found in the user’s home directory, it is
read and processed. It should generally only contain meta-commands.


o If the -init option is present, the specified file is processed.


o All other command line options are processed.


 

SEE ALSO

http://www.sqlite.org/

The sqlite-doc package
 

AUTHOR

This manual page was originally written by Andreas Rottmann
<[email protected]>, for the Debian GNU/Linux system (but may be used
by others). It was subsequently revised by Bill Bumgarner <[email protected]>.



 

Index



NAME

SYNOPSIS

SUMMARY

DESCRIPTION


SQLITE META-COMMANDS


OPTIONS

INIT FILE

SEE ALSO

AUTHOR



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