[Firebird-devel] A new Rust driver
Hi! I would like to share a new lib for use the Firebird in Rust programming language, and currently the only one: https://github.com/fernandobatels/rsfbclient. We are using the official fbclient, but one of contributors is also working on a native Rust implementation. -- Att, Luis Fernando Batels. Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
Em dom, 23 de ago de 2020 09:18, Mark Rotteveel escreveu: > On 23-08-2020 13:43, Dimitry Sibiryakov wrote: > > 23.08.2020 03:39, Adriano dos Santos Fernandes wrote: > >> I have created RDB$BLOB_UTIL package pull request: > > > >AFAICS this package is based on UDR. Does it really have to be > > system? May be it would be better to make it optionally declarable as > > any other UDR: just library and SQL script. > Not exactly, it needs transaction events not present in external engines. > What is your argument against making it built-in? Having it built-in > ensures that you can rely on it being present without having to take > explicit action. > Yes, and that is very good when talking about core functionality. And in code it's very modular and adds minimal things to "core's core". Adriano Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
23.08.2020 14:17, Mark Rotteveel wrote: What is your argument against making it built-in? Actually none except may be security. I don't know whether execution permissions can be granted or revoked for system packages. I just have a feeling that Oracle-compatible set of packages can be more handy as an independent project. -- WBR, SD. Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
Em dom, 23 de ago de 2020 05:03, Mark Rotteveel escreveu: > I'm wondering if it would be possible to make the PSQL compiler a little > bit more intelligent and do such optimizations automatically. > By definition you cannot write to a created (and already closed) blob if you reopen it. And PSQL does that, create, append and close blob so it can be used immediately. There is also the request internals... Perhaps losting one or two years on it to support such things. Adriano Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
Em dom, 23 de ago de 2020 05:10, Mark Rotteveel escreveu: > I haven't looked in depth, but as far as I can tell, this only handles > binary blobs. Is that correct? > I have initially tought to support text operations explicitly too but in the end I found it unneccessary. You just need to call append with the data in the correct charset. The data will be validated to the field charset when assigned. More advanced operations for blob filters usage and charset transliteration may be added. Adriano Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
On 23-08-2020 13:43, Dimitry Sibiryakov wrote: 23.08.2020 03:39, Adriano dos Santos Fernandes wrote: I have created RDB$BLOB_UTIL package pull request: AFAICS this package is based on UDR. Does it really have to be system? May be it would be better to make it optionally declarable as any other UDR: just library and SQL script. What is your argument against making it built-in? Having it built-in ensures that you can rely on it being present without having to take explicit action. Mark -- Mark Rotteveel Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
23.08.2020 03:39, Adriano dos Santos Fernandes wrote: I have created RDB$BLOB_UTIL package pull request: AFAICS this package is based on UDR. Does it really have to be system? May be it would be better to make it optionally declarable as any other UDR: just library and SQL script. -- WBR, SD. Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
[Firebird-devel] ODP: RFC: RDB$BLOB_UTIL system package
>>PSQL compiler a little >>bit more intelligent and do such optimizations automatically. It should be more inteligent as this is simple task. Blob should have flag like returned outside. If set then new blob should be created if false it is simple appended. E.g. in this loop there is no need to create blob as it is not returned > while (i < 150) > do > begin > b = b || s; > i = i + 1; > end But e.g. here (e.g. blob b is in returning values) > while (i < 150) > do > begin > b = b || s; > if i mod 10=0 then > susspend; > i = i + 1; > end Every 10 loop there is need to new one blob to create – as susspend return blob outside. Only should be identified situations when „blob is returned” occure. If it sussped or more situations like >> insert into t (b) values (:b); Only need to set flag for blob in that situations and in next assignment create new one with flag set to false Regards, Karol Bieniaszewski Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
I haven't looked in depth, but as far as I can tell, this only handles binary blobs. Is that correct? Mark On 23-08-2020 03:39, Adriano dos Santos Fernandes wrote: Hi! I have created RDB$BLOB_UTIL package pull request: https://github.com/FirebirdSQL/firebird/pull/281 Here is a test comparing how problematic is the current approach (which has exponential time complexity and space storage) of creating blobs in PSQL with the RDB$BLOB_UTIL approach. Current: -- Takes 0m12,772s and resulting database has 117334016 size isql -term ! create database 'b.fdb'! create table t (b blob sub_type binary)! execute block as declare b blob; declare s varbinary(1) = '0'; declare i integer; begin i = 1; while (i < 1) do begin s = s || '0'; i = i + 1; end b = s; i = 1; while (i < 150) do begin b = b || s; i = i + 1; end insert into t (b) values (:b); end! commit! -- RDB$BLOB_UTIL: -- Takes 0m0,502s and resulting database has 3383296 size. isql -term ! -ch utf8 create database 'b.fdb'! create table t (b blob sub_type binary)! execute block as declare bh integer; declare b blob; declare s varbinary(1) = '0'; declare i integer; begin bh = rdb$blob_util.new(false, false); i = 1; while (i < 1) do begin s = s || '0'; i = i + 1; end i = 0; while (i < 150) do begin execute procedure rdb$blob_util.append(bh, s); i = i + 1; end insert into t (b) values (rdb$blob_util.make_blob(:bh)); end! commit! -- Adriano Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel -- Mark Rotteveel Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
Re: [Firebird-devel] RFC: RDB$BLOB_UTIL system package
I'm wondering if it would be possible to make the PSQL compiler a little bit more intelligent and do such optimizations automatically. Mark On 23-08-2020 03:39, Adriano dos Santos Fernandes wrote: I have created RDB$BLOB_UTIL package pull request: https://github.com/FirebirdSQL/firebird/pull/281 Here is a test comparing how problematic is the current approach (which has exponential time complexity and space storage) of creating blobs in PSQL with the RDB$BLOB_UTIL approach. Current: -- Takes 0m12,772s and resulting database has 117334016 size isql -term ! create database 'b.fdb'! create table t (b blob sub_type binary)! execute block as declare b blob; declare s varbinary(1) = '0'; declare i integer; begin i = 1; while (i < 1) do begin s = s || '0'; i = i + 1; end b = s; i = 1; while (i < 150) do begin b = b || s; i = i + 1; end insert into t (b) values (:b); end! commit! -- RDB$BLOB_UTIL: -- Takes 0m0,502s and resulting database has 3383296 size. isql -term ! -ch utf8 create database 'b.fdb'! create table t (b blob sub_type binary)! execute block as declare bh integer; declare b blob; declare s varbinary(1) = '0'; declare i integer; begin bh = rdb$blob_util.new(false, false); i = 1; while (i < 1) do begin s = s || '0'; i = i + 1; end i = 0; while (i < 150) do begin execute procedure rdb$blob_util.append(bh, s); i = i + 1; end insert into t (b) values (rdb$blob_util.make_blob(:bh)); end! commit! -- -- Mark Rotteveel Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
