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Octave SQLITE Toolkit
The Octave SQLITE toolkit is a set of SQLITE routines for GNU Octave
The toolkit must be installed and then loaded to be used.
It can be installed in GNU Octave directly from the website, or can be installed in an off-line mode via a downloaded tarball.
The toolkit has a dependency on the SQLITE library (https://www.sqlite.org/), so it must be installed in order to successfully install the toolkit.
The toolkit must be then be loaded once per each GNU Octave session in order to use its functionality.
With an internet connection available, the octave sqlite package can be installed from the octave-sqlite website using the following command within GNU Octave:
pkg install https://sourceforge.net/projects/octave-sqlite/files/v0.0.1/octave-sqlite-0.0.1.tar.gz/download
The latest released version of the toolkit will be downloaded and installed.
With the toolkit package already downloaded, and in the current directory when running GNU Octave, the package can be installed using the following command within GNU Octave:
pkg install octave-sqlite-0.0.1.tar.gz
Regardless of the method of installing the toolkit, in order to use its functions, the toolkit must be loaded using the pkg load command:
pkg load sqlite
The toolkit must be loaded on each GNU Octave session.
Connection to the database is done using the sqlite function.
Example:
db = sqlite('testdb.db')
db =
sqlite with properties
Database: testdb.db
IsReadOnly: 0
AutoCommit: on
To quickly read data from a table, use the sqlread function
Example:
data = sqlread(db, "TestTable")
To close the database, use the close function
Example:
close(db)
The functions currently available in the toolkit are described below;
*** close (DB)***
Close the sqlite connection represented by the object DB.
** Inputs:**
DB
Previously created octave_sqlite object
** Inputs:**
None
See also: sqlite.
*** YESNO = isopen (DB)***
Return true if the sqlite connection is open.
** Inputs:**
DB
previously opened sqlite database.
** Outputs:**
YESNO
Boolean for if the database is still open.
See also: sqlite, close.
*** DB = sqlite (FILENAME)***
*** DB = sqlite (FILENAME, MODE)***
Create a sqlite database connection
** Inputs:**
'filename'
Filename of the sqlite database
'mode'
mode for the sqlite access 'readonly', 'connect' (default),
'create'.
** Outputs:**
'db'
a opened SQLITE database as a octave_sqlite object
** Examples:**
Open a sqlite database, failing if it doesnt exist.
db = sqlite("mytest.db");
Open a sqlite database, creating it if it doesnt exist.
db = sqlite("mytest.db", "create");
*** DATA = fetch (DB, SQLQUERY)***
Return rows of data after runnning a sql query on a sqlite
database.
** Inputs:**
DB
currently open sqlite database.
SQLQUERY
String containing a valid select sqlquery.
PROPERTYNAME, PROPERTYVALUE
property name/value pairs where known properties are:
MaxRows
Integer value of max number of rows in the query
VariableNamingRule
String value 'preserve' (default) or 'modify' to flag
renaming of variable names (currently ignored)
** Outputs:**
DATA
a table containing the query result.
See also: sqlite, sqlread.
*** DATA = sqlread (DB, TABLENAME)***
*** DATA = sqlread (DB, TABLENAME, PROPERTYNAME, PROPERTYVALUE ...)***
Return rows of data from table TABLENAME in a sqlite database.
This function is the equivalent of running SELECT * FROM TABLE.
** Inputs:**
DB
currently open sqlite database.
TABLENAME
Name of a table with the database.
PROPERTYNAME, PROPERTYVALUE
property name/value pairs where known properties are:
MaxRows
Integer value of max number of rows in the query
VariableNamingRule
String value 'preserve' (default) or 'modify' to flag
renaming of variable names (currently ignored)
** Outputs:**
DATA
a table containing the query result.
See also: sqlite, fetch.
*** sqlwrite (DB, TABLENAME, DATA)***
*** sqlwrite (DB, TABLENAME, DATA, PROPERTYNAME, PROPERTYVALUE ...)***
Insert rows of data from TABLENAME.
If the table does not exist it will be created, using the
COlumnType propery if available otherwise, the type of input data
will be used to determine field types.
** Inputs:**
DB
Previously created octave_sqlite object
TABLENAME
Name of table to write data to
DATA
Table containing data to write to the database. Variables
names are expected to match the databse.
PROPERTYNAME, PROPERTYVALUE
property name/value pairs where known properties are:
ColumnType
Optional cell array of same size as the data that may be
used if the table is created as part of the rite
operation.
** Outputs:**
None
See also: sqlite, execute.
*** commit (DB)***
Commit pending transactions of sqlite connection.
** Inputs:**
DB
Previously created octave_sqlite object
** Outputs:**
None
See also: sqlite, rollback.
*** execute (DB, SQLQUERY)***
Execute non select sql query SQLQUERY on a sqlite database.
** Inputs:**
DB
Previously created octave_sqlite object
SQLQUERY
A valid non selecting SQL query string
** Inputs:**
None
See also: sqlite, fetch.
*** rollback (DB)***
Rollback pending transactions of sqlite connection.
** Inputs:**
DB
Previously created octave_sqlite object
** Outputs:**
None
See also: sqlite, commit.
*** TABLE = dbtable()***
*** TABLE = dbtable (VAR1, ... VARN)***
*** TABLE = dbtable (... PROPERTYNAME, PROPERTYVALUE)***
Basic implementation of a table type to avoid dependancies on other
packages.
** Inputs:**
VAR1 ... VARN
Variables or data to be used as the column data of the table.
When the input is a variable, the variable name will be used
as the column name, otherwise the columns will be Var1 ...
VarN.
PROPERTYNAME, PROPERTYVALUE
Property name/value pairs, where known property names are:
VariableNames
a cell string matching the number of input columns with
the name to use for the
DimensionNames
a cell string matching of length 2 for using as dimesion
access. If not specified it will be "Rows" and
"Variables".
** Outputs:**
TABLE
a dbtable object
Version 3, 29 June 2007
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number of the GNU General Public License, you may choose any
version ever published by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that
proxy's public statement of acceptance of a version permanently
authorizes you to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
- Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE
COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE
RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR OR CORRECTION.
- Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.
- Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely
approximates an absolute waiver of all civil liability in
connection with the Program, unless a warranty or assumption of
liability accompanies a copy of the Program in return for a fee.
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.
ONE LINE TO GIVE THE PROGRAM'S NAME AND A BRIEF IDEA OF WHAT IT DOES.
Copyright (C) YEAR NAME OF AUTHOR
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
PROGRAM Copyright (C) YEAR NAME OF AUTHOR
This program comes with ABSOLUTELY NO WARRANTY; for details type 'show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type 'show c' for details.
The hypothetical commands 'show w' and 'show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see http://www.gnu.org/licenses/.
The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read http://www.gnu.org/philosophy/why-not-lgpl.html.