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

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3
votes
2answers
361 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 ...
7
votes
2answers
619 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 ...
3
votes
0answers
383 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 ...
5
votes
1answer
118 views

Can I store a DataDistribution in a database?

I have a DataDistribution data = KernelMixtureDistribution[RandomVariate[NormalDistribution[], 10^5]] that takes a long time ...
10
votes
3answers
840 views
12
votes
1answer
658 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 ...
7
votes
1answer
350 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
890 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 ...
2
votes
3answers
438 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 ...
10
votes
1answer
581 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 ...
8
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 ...
5
votes
2answers
365 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 ...
8
votes
1answer
470 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 ...
6
votes
4answers
1k 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 ...
11
votes
3answers
560 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 ...