Return a Portion of a Character String

I use this method for keeping my sql templates away from my code.

You can extend upon the idea, as I have done in the past, by placing SQL handing classes between your scripts and the template library.

Things to note here:

The lesser userd heredoc string method. The reason this is used is to keep the SQL clear and well laid out, and not as messy as using quotes.

vsprintf() is a very handy function if you don't want to hard code the number of parameters to interpolate your string with.

The use of sprintf templates offers you additional security. For example, only allowing numbers to be placed where a %d falls. This, of course, shouldn't be the only security on user supplied variables, but comes in extra handy for debugging purposes.

Regarding the TODO in there, it would take a check of the number of % placeholders there are in the template. One caveat is remembering to remove the count of %%'s that appear (the literal percentage).

Connect to MySQL db & display result from Table query

I actually like SQL. So, things like Hibernate with it's own query language don't quite fit my style. But, I don't want to code the same catch SQLException conn.close over and over either. So, I came up with this.

The idea is you extend SQLCommand (usually anonymously) override getSql(), and call execute() to get a list of whatever objects you are selecting - all the cleanup stuff is taken care of. It also handles nullable attributes more intuitively using ResultSetWrapper and PreparedStatementWrapper so that in your overridden getRow(ResultSetWrapper rs) method, you can call getInt on a nullable column and have it return null - what a concept! Also I like java.util.Date for my dates, so the wrappers convert to/from java.sql.Timestamp.

Right now I've only bothered with some basic types - it should be pretty clear how to add more if you need em.

See what ya'll think.

Oh, it uses JDK 1.5 Generics, but stripping that away would be pretty easy if you wanted 1.2 compliance.

Creates a new user with all privileges when logging in from localhost.

List the databases on a MySQL serve

Some usefull snippets for SQL Server.

This is an example of how to shrink a database with simple query.

This is a little script I wrote that copies your database through a cfquery statement

Enjoy,
Ernie
ernest.breau@gmail.com

This little tool is pretty useful for administrators who wear the hat of both system admin and DBA on Linux/MySQL boxes. I wrote it as kind of a joke for our Perl developers, but now I use it just about every day for everything from at prompt hackups to full on table space utilization monitoring scripts.

The snippet has the library script that you can source into scripts that actually do work, as well as a script that uses the functions in the libraries. Anyone who has used the C API should be able to relate to using this script.

It's pretty fast and lightweight. It makes only one external call to mysql and sed per query. The rest is all bash builtins. Requires bash > 3.0