DatabaseLink is a toolkit for working with SQL databases built into Mathematica.

learn more… | top users | synonyms

12
votes
1answer
529 views

Microsoft SQL DatabaseLink connection using Windows Authentication

For those who use Mathematica with databases in companies, a common way to securely connect to those is using Windows Authentication (detailed here). Mathematica doesn't seem to support this ...
11
votes
0answers
217 views

Benefit of using Dataset to collect SQLSelect output

Considering a DatabaseExample included with Mathematica: ...
10
votes
3answers
678 views
10
votes
3answers
528 views

How can I speed up SQL queries in Mathematica?

I have an application that queries a MySQL database many times for data. At the moment, Mathematica and MySQL are running on the same box and yet it takes over 1.6 seconds for the query to run and ...
10
votes
3answers
4k views

Connect to SQLite database

I am trying to connect to a SQLite database and since there is no officially supported driver; I decided to use the sqlite-jdbc driver and port the respective code into Mathematica. However, the ...
10
votes
1answer
518 views

Is there a way to print out SQL queries made using DatabaseLink?

I have a Mathematica batch script which makes some MySQL queries using DatabaseLink to store parameters of the run in a database. Recently, I had a run where these queries failed, and there was no ...
9
votes
1answer
158 views

Slow work of SQLInsert with MS SQL Server in V10

This question is very similar to: Slow work of SQLInsert with SQLite, but for MS SQL Server. Unfortunately the use of SQLBeginTransaction and ...
9
votes
3answers
441 views

Slow work of SQLInsert with SQLite

I want to store my data in SQLite database, but writing large numbers of data its too slow. For example: ...
8
votes
1answer
444 views

Stealth daylight saving shift in SQL data

I'm querying a SQL database with DatabaseLink and resulting SQLDateTime objects are shifted by an hour during daylight saving ...
8
votes
1answer
199 views

OpenSQLConnection problem - password visible

Prerequisites some database (here, it's called sakila (mysql standard test db I think)) a user (with password) that has access to that db (I'll use u:testuser/p:testpass) Setup - minimal (?) ...
7
votes
3answers
886 views

How to connect Mathematica 9 to MS SQL 2012 using Windows 7 enterprise (64-bit)

I have used Microsoft Open Database Connectivity (ODBC) with Mathematica 8.0 and MSSQL 2008 on Windows XP, but I can't get it to work on Windows 7 Enterprise (64-bit) with Mathematica 9.0.1.0 and MS ...
7
votes
1answer
343 views

Complex queries to MS SQL Server

I'm using DatabaseLink to query MS SQL Server with SQLExecute which works totaly fine, for ex.: ...
7
votes
2answers
506 views

DatabaseLink`: MySQL query with client/server compression

I'm trying to reduce transfer time when accessing rows of a mysql table over a network, where each row has a lot of data. Is there a way to enable client-server compression when accessing a mysql ...
7
votes
1answer
3k views

How can I connect to a database using the 32 Bit ODBC on a Windows 7 (64 Bit) machine?

I am having difficulties using a DSN that was defined in the 32 Bit version of the ODBC-manager? (there are two separate managers for 32/64 Bit on a 64 Bit machine) Using the DatabaseLink package ...
7
votes
2answers
746 views

Trying to extract information from an MDB file. Import is too slow

I am running a Linux box and as usual the documentation for this type of box is not great. I am trying to open up and extract and possibly include later on information from a "mdb" file. The file ...
7
votes
2answers
168 views

Connecting to Microsoft SQL with version 10

After upgrading to version 10, functions relying on a connection to a Microsoft SQL database no longer work. When I attempt to open a connection with something like: ...
6
votes
2answers
526 views

Correct behavior of lock file in hsqldb connection

I'm running in to some problems with generating a persistent HSQLDB and during some troubleshooting I came upon the following behavior. ...
5
votes
4answers
896 views

MySQL Connection Problem

I have a problem with the configuration of the J-Connector plug-in with a MySQL database. Most of the time all works well, but sometimes the connection remains blocked for 2 hours and then it gives ...
5
votes
1answer
107 views

Can I store a DataDistribution in a database?

I have a DataDistribution data = KernelMixtureDistribution[RandomVariate[NormalDistribution[], 10^5]] that takes a long time ...
5
votes
1answer
84 views

SQLInsert'ing Null into a table (not SQLite)

Is it possible to insert Null values using DatabaseLink, without formatting the query string manually? Hans found (below) that this works for SQLite, so it appears ...
5
votes
1answer
159 views

How to get data from DB into dataset with keys

I'm a Mathematica newbie and I have the following problem: I connect to a Oracle DB and read out a set of variables, further on I want to histogram some of the variables. A Dataset seems to be the ...
5
votes
1answer
249 views

Using cursors with result sets to reduce memory usage

I have a database table with 900,000 rows and 80 columns per row which I'd like to work with in mathematica. My computations are isolated to each row, so I'd like to stream only a single row (or small ...
4
votes
2answers
604 views

Working with a database

I just started to work with a database through Mathematica. I have a large data set. I use an .mx file to store my data. Now I have to store the data in a database, ...
4
votes
2answers
299 views

What is the quickest way to convert a lot of SQLDateTime[] objects to DateLists

I often run database queries that return sets of {date, datum} objects. A hypothetical query looks like ...
4
votes
1answer
384 views

Insert large amount of data in HSQL

I create HSQL database with one table ...
4
votes
1answer
215 views

How do I put a Monitor into CDF?

I would like to keep track of progress of a database request in an Enterprise CDF, but it won't allow PrintTemporary or ...
4
votes
1answer
222 views

How to update bundled SQLite library (or driver?) in V10 for OS X

I've been using undocumented Database functions with Mathematica V9 to acces my SQLite database, which is a Firefox-generated database that contains cookies. ...
4
votes
1answer
166 views

How can I write image to MySQL database?

I have a database, such as: In Mathematica, the final code is: img1=Export["/home/user/Desktop/1.jpg",resultimg1]; I tried ...
4
votes
0answers
97 views

Is it possible to specify GMT as default in OpenSQLConnection or JDBC?

I'm connecting to a PostgreSQL database, with tables containing TIMESTAMPs with timezone, using ...
3
votes
2answers
300 views

Handling error in database connection (TimeConstrained)

I have a lot of scripts that use a database connection, and I have realized that my code should be protected against errors in my connection. For example, when my database is out for some technical ...
3
votes
1answer
358 views

How can I connect database(MSSQL Server) with Mathematica?

Newly I started working with database(MSSQL Server 2012). by google help, I created Table name as EmployeesList and also ...
3
votes
0answers
591 views

Problem inserting data into a mysql table with column names having a space

I have a mysql table whose column name has space. I tried inserting the data into this column. I got an error I tried a sample code, which tests accessing the columns with a space and that returns ...
3
votes
0answers
324 views

Microsoft SQL DatabaseLink connection using Windows Authentication from Mac

We know that Mathematic doesn't natively support Windows Authentication connect. But as we can see in this post, the problem can be easily solved when your Mathematica is in Windows version (I have ...
2
votes
2answers
826 views

How can I import images from a Microsoft SQLServer database?

I have a table with binary data (images) in Microsoft SQlServer. I want to import that data and convert it into Image format. I wrote the following code, but it's ...
2
votes
3answers
352 views

What format to use to store expressions in database?

I am storing lists of expressions into a MySQL database. Each list is of form {_String, {_String, _Real}, _Real} What data format should each column of the ...
2
votes
1answer
40 views

Is there a way to define primary keys using SQLCreateTable?

I would like to create a db table and specify the primary key columns using the command SQLCreateTable. I know I could use SQLExecute but in this case I'm only interested in the right parameters for ...
2
votes
1answer
160 views

SQLite and Mathematica

I want to connect to a local database with Mathematica. I used DB Browser for SQLite to create the database with a single table and then exported it locally as a .sql file. To access the database I ...
2
votes
1answer
84 views

DatabaseLink Example for DB2 and Mathematica

could someone please point me to good example on how to make a JDBC connection to an IBM DB2 database?
2
votes
0answers
195 views

Can Mathematica use a MySQL ODBC connector?

I have a MySQL database that I connect to using Mathematica and would like to distribute my Mathematica code to others. We already have ODBC DSNs setup on peoples machines using the MySQL ODBC ...
1
vote
1answer
68 views

How can I “ORDER BY” using SQLSelect?

A pretty straightforward problem, you would think, but I cannot seem to find the answer in the documentation for SQLSelect. The query I want to run is the following: ...
1
vote
1answer
110 views

Multi-table SQLSelects

I'm trying to figure out how these statements really work, and am having some trouble with the documentation (and the software!). Using the example publishers database (Mathematica 8), the following ...
1
vote
1answer
135 views

I cannot get tables names and columns names from database

I am working with database using OpenSQLConnection-JDBC. I am able to fetch the data perfectly from the tables but I cannot get nor the names of the tables (using SQLTableNames) neither the column ...
1
vote
1answer
74 views
1
vote
1answer
63 views

How to specify the number of precision digits for columns using DatabaseLink functions and options

Some databases (e.g. MySQL) does not store decimal places for seconds unless the number of digits needed is directly specified (e.g. DATETIME(4) for 4 digits) when creating the table in the database. ...
1
vote
1answer
132 views

OpenSQLConnection error

I used to be able to connect to a SQL Server database. I haven't run this program for a few months. I tried it today and it failed, so I went back to try OpenSQLConnection[] and got the following ...
1
vote
1answer
137 views

Creating a Dynamic MSSQL connection

Hello i am trying to create a notebook that automatically connects to a database on MSSQL server and would then query this to create a sort of personal report. I have connected to this database and ...
1
vote
0answers
41 views

Awkward DatabaseLink JDBC Error [closed]

I've created a GUI application (a database editor) that uses DatabaseLink and it is currently working fine on my PC (M10.02, Windows 7) and on a clients's PC (CDF Player Pro 10.02, Windiws 8). While ...
1
vote
0answers
63 views

OpenSQLConnection SSPI Library Not Loaded

I am attempting to open a connection to SQL Server with Windows Authentication (SSPI) using OpenSQLConnection and JDBC. ...
1
vote
0answers
35 views

Need a recommendation for managing a database link

I want to make a package which needs to have a external database link. But it is hard for me to have an idea about how to manage the database link. I want the link to be connected as long as I use the ...
1
vote
0answers
43 views

SQLDateTime from a time column is missing the milliseconds component

Can anyone confirm this? I am using M9.0.1 on win7 64bit connecting to a SQL Server db. When I fetch a datetime column the SQLDateTime objects contain 6 entries, 5 integers and a fractional second ...