AltME: Databases

Messages

AdrianS
If you read the LMDB page, there is a SQLite implementation with LMDB replacing SQLite's own B-tree implementation. Performance looks significantly better.
Kaj
SQLite 4 has a new interface for low level storage engines like these, and a default one that's also faster than SQLite 3

AdrianS
LMDB for SQLite 4 is in the works too, it seems. I guess it remains to be seen if it will improve upon the built in implementation.

Pavel
https://code.google.com/p/high-concurrency-btree/ a public domain implementation compiles to about 25 kB. No problem with TCC compiler. using mmap partially sensitive for configuration parameters (page size and amount of cached space). This program doesnt store a data only pointers to them ie creating only indexes.
Pavel
previosly mentioned LMDB was based on work  of Martin Hedenfalk http://www.bzero.se/ldapd/ original implementation needs be touched to be complilable under Windows, but it is worth to look at it. Append only DB

Endo
Cannot connect to MySQL 5x with Rebol/Command's official MySQL driver?
I get "Client does not support authentication protocol" even I use
"update user set Password=OLD_PASSWORD('password') WHERE User='username'; "
which should work.
So the only way is to use http://softinnov.org/tmp/mysql-protocol-41.r  ?

DocKimbel
IIRC, the statically linked libmysql in the SDK is a 3.x version. You can use that MySQL driver version or you can write a binding to a newer libmysql client library...as you wish. ;-)

GiuseppeC
Hi,
  is this the place to talk about R3 ODBC ?
Gregg
Seems as good as any to me.

sqlab
Is there a newer version than 1.2.1 of the mysql-driver of Softinnov available? I tried to connect to MariaDB and got an error message
>> read mysql://localhost/mysql/test
** User Error: ERROR 1251 : Client does not support authentication protocol requested by server; consider upgrading MariaDB client
** Near: read mysql://localhost/mysql/test
DocKimbel
You have the link to the newest version 4 messages above:
http://softinnov.org/tmp/mysql-protocol-41.r
sqlab
Thanks

Will
I've got two changes on mysql-protocol-41.r
the first one is a variable leakage:
-   read-packet: func [port [port!] /local packet-len pl status][
+   read-packet: func [port [port!] /local packet-len pl status tmp][
the second one I really don't remember what it does.. :
-               either find port/locals/capabilities 'protocol-41 [
-                   insert-query port data
-               ][
+               ; either find port/locals/capabilities 'protocol-41 [
+               ;   insert-query port data
+               ; ][
                    insert-all-queries port data
-               ]
+               ; ]

Endo
Is there any way to insert a NULL using parametrized query?
mysql: first open odbc://mydns
insert mysql "create temporary table t (a int)"
insert mysql "insert into t values (NULL)"  ; this works
insert mysql ["insert into t values (?)" none]  ; this doesn't
** Script Error: ODBC error: [Microsoft][ODBC Driver Manager] Invalid string or buffer length
GiuseppeC
Hi Doc, is the mysql protocol R3 compatible ?
Endo
Protocol source is very clear, it looks like it might compatible with R3 or at least it can be with a little effort.
I'll get his to-sql function from the protocol source and use it to generate SQL of my parametrized query.

Last message posted 111 weeks ago.