sqlite3 (1) - Linux Manuals

sqlite3: A command line interface for SQLite version 3

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)
                         html     HTML <table> code
                         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.

-bail

Stop after hitting an error.

-interactive

Force interactive I/O.

-batch

Force batch I/O.

-column

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

-cmd command

Run command before reading stdin.

-csv

Set output mode to CSV (comma separated values).

-html

Query results will be output as simple HTML tables.

-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).

-stats

Print memory stats before each finalize.

-version

Show SQLite version.

-vfs name

Use name as the default VFS.

-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.

AUTHOR

This manual page was originally written by Andreas Rottmann <rotty [at] debian.org>, for the Debian GNU/Linux system (but may be used by others). It was subsequently revised by Bill Bumgarner <bbum [at] mac.com>.