1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
README for mSQL version 1.0 14 December 1994
----------------------------------------------------------------------------
What's new in 1.0
-----------------
1.0 is actually what was going to be 0.3-release. I decided to give it
a "real" number because it has enough features and appears stable enough
to be used seriously now (we're even using it in production at Bond
hanging of the back of our WWW server and campus user database). 2
months of alpha and beta testing has produced what appears to be a
pretty solid hunk of code.
1.0 brings per-database access control, joins, ordering, mmap() support
if you have it (and it'll do shared read/write regions - unlike Linux, HPUX
etc), distinct, and many bug fixes to mSQL. The doco has also been updated
for for this release to reflect the changes to both the SQL supported
and also the API and programs.
msqladmin now offers a "shutdown" command and also a "reload" command
for reloading the access control info on the fly. You can only run
msqladmin as root (or whoever you specified as the root user) from the
local machine. There's further info about the access control mechanism
in the manual.
msqladmin also offers a version command. This will report the version
of msqladmin, the version of the server it's talking to, and the
protocol version used to talk to the server.
msql will use the VISUAL environment variable for your editor rather
than forcing you to use vi. If it isn't set it'll default to vi anyway.
A new program called msqldump is included to generate an ASCII dump of a
table or an entire database. The output is formatted as an msql script
and includes the "create table" and "insert" commands required to
recreate whatever was dumped. It'll work over the net too so you can
grab an entire database off a remote box.
The MSQL_HOST environment variable has gone. All msql programs now
offer a -h option for talking to a remote host. In the API, if
msqlConnect() is called with NULL, it forces it to use the UNIX socket
on the local host.
The lex/flex based scanner has been replaced by a hand written C
scanner. This removes a heap of portability problems with various
version of lex/flex and the good old "I'm flex but I'll call myself lex"
problem on Linux and *BSD.
A regression test suite is now available in tests/rtest. Run it after
you've compiled and installed the code to ensure that it's working OK.
General Info
------------
mSQL has been developed under Sun OS 4.1.1 but has been tested under
Solaris 2.3, Ultrix 4.3, Linux, FreeBSD 2, and OSF/1 (cc not gcc). That
said, it should "autoconf" and build on most BSD derived systems, SVR4
based systems or POSIX O/S's (that should cover most of them). It has been
reported that it works out-of-the-box on HP-UX, NeXT, SCO, Sequent,
Cray, Tandem and a few others. I haven't tested these so buyer beware.
Installation
------------
To build mSQL, type "make target" in the top directory. This will build
a directory where the object files for your system will be made. This
mechanism allows you to NFS mount the sources onto different machines
and build mSQL on different platforms without having to make copies of
the sources. The directory will be under the "targets" directory (e.g.
$(TOP)/targets/Solaris-2.3-Sparc )
Once the target directory has been created, change directory into it and
run "setup". That will run autoconf and some other configuration
scripts. Once that has completed, just type make. You should install
the software with "make install" when you're happy with it.
The default installation directory is /usr/local/Minerva. This area is
shared by all the development of Minerva (including the ESL scripting
language and Minerva itself). It's probably a good idea to leave it as
that rather than /usr/local/msql or similar if you wish to use ESL
(check out doc/Minerva for details on ESL or grab the ESL manual via ftp
from Bond.edu.au in /pub/Minerva/esl )
Testing the software
--------------------
Once it is installed, you can try the sample mSQL script provided in
the msql source directory. Fire up the server using
/usr/local/Minerva/bin/msqld&
Create a test database using
/usr/local/Minerva/bin/msqladmin create test
Run the script through the terminal monitor using
/usr/local/Minerva/bin/msql test < sample.msql
There are also some further test scripts in the tests directory. The
"killer" test will produce performance figures about mSQL running on
your machine. details such as the number of operations per second for
inserts, fills and selects on both keyed and flat tables is generated.
For a real test, run the regression test suite (rtest) in the tests
directory.
Notes :
------
o Because this stuff is pretty new, there's a script in the
scripts directory that you may want to use to run the server. It
restarts the server if it crashes and mails you a notification
of the failure. It's called run_daemon and may save you some
heart ache.
o If you run this on a Cray (what? you don't have a Y-MP at
home? :) you'll have to add -lsocket to EXTRA_LIB in site.mm
after you run setup.
o OSF/1 and gcc don't appear to like this stuff. If you're
using OSF/1 use the standard DEC compiler and everything is
fine.
o The manual is formatted for an A4 page. I have run the
postscript through a filter that should let it print on any
paper size although the margins may get stuffed up a bit.
If you decide to use mSQL for anything, could you drop me a line. I'd
like to keep track of just how many people are using it and what it's
being used for. You may also wish to join the mailing list by sending a
message to msql-list-request@Bond.edu.au.
__ David J. Hughes - Bambi@Bond.edu.au
/ \ / / / http://Bond.edu.au/People/bambi.html
/___/ __ _ ____/ / / _
/ \ / \ / \ / / / / / \ / Senior Network Programmer, Bond University
\___/ \__// / \__/ \__/ / / / Qld. 4229 AUSTRALIA (+61 75 951450)
|
