Search found 49 matches

by steved
Fri Mar 02, 2018 11:33 pm
Forum: Language Issues
Topic: Aditional operator functionality
Replies: 2
Views: 4188

Aditional operator functionality

Some time ago you mentioned that CAST_AS_CHARACTER(OPERATOR) and CAST_AS_OPERATOR(CHARACTER)
exist internally and were going to be exposed to users in a future update. These operators would be a most
welcomed addition to Rel.

As always, thanks for Rel
by steved
Thu Jan 11, 2018 8:50 am
Forum: Report a Bug
Topic: Rev query problems
Replies: 5
Views: 6652

Re: Rev query problems

Former query "QUERY10 IN Rev FOR SPLITTING STRINGS." that had problems is
now query "12.31.17 NEW QUERY10 FOR SPLITTING". After making several changes
the new query loads and executes with no problems. All is well in rev!
by steved
Sun Dec 31, 2017 3:37 am
Forum: Report a Bug
Topic: The curious case of OPERATOR ABS(INTEGER).
Replies: 1
Views: 3107

The curious case of OPERATOR ABS(INTEGER).

I've been meaning to bring this to your attention for some time so here it is. There is an easy workaround but if you are unaware of this problem it can cause serious grief :D Running Relv3.010 on WINDOWS 10. It would seem ABS(INTEGER) always incorrectly displays a rational but is correctly recogniz...
by steved
Sat Dec 30, 2017 6:50 am
Forum: Report a Bug
Topic: Rev query problems
Replies: 5
Views: 6652

Re: Rev query problems

Forgot to mention using Rel v.3.010. While working on the above problem query I received the following error in the log. I have no idea if it's related to the "null" errors I'm also getting. RCP log: Status ERROR: org.eclipse.e4.ui.workbench code=0 Internal Error org.eclipse.swt.SWTError: No more ha...
by steved
Thu Dec 28, 2017 7:34 am
Forum: Report a Bug
Topic: Rev query problems
Replies: 5
Views: 6652

Rev query problems

I am running a windows 10 professional system. Attached is a small txt script that will install 2 rev queries. It also contains several types and 2 operators used in the queries. The install script requires that rev already be installed in the database.The rev queries are taken from a backup script ...
by steved
Mon Nov 06, 2017 8:55 am
Forum: Report a Bug
Topic: Update anomaly.
Replies: 1
Views: 3376

Update anomaly.

VAR TEST3 BASE INIT( REL{TUP{ID 1,T "A1",SPLIT1 REL{TUP{CTK 1,STR "B1"},TUP{CTK 2,STR "C1"}}}, TUP{ID 2,T "D2",SPLIT1 REL{TUP{CTK 1,STR "E2"},TUP{CTK 2,STR "G2"},TUP{CTK 3,STR "H2"}}}, TUP{ID 3,T "J3",SPLIT1 REL{TUP{CTK 1,STR "K3"}}}} )KEY{ID}; //THE INTENT IS TO UPDATE ATTRIBUTE STR IN A SPLIT1 RE...
by steved
Fri Aug 25, 2017 1:31 am
Forum: Report a Bug
Topic: Key violation
Replies: 6
Views: 7119

Re: Key violation

Use D_INSERT:
D_INSERT foo RELATION {TUPLE {a 1, b 1}};
D_INSERT foo RELATION {TUPLE {a 2, b 1}};

ERROR: RS0232: Inserting tuple would violate uniqueness constraint of KEY {b}

stephen
by steved
Thu Oct 20, 2016 8:36 am
Forum: Discussion
Topic: Interactive programs
Replies: 1
Views: 2738

Interactive programs

I would like to see Rel have the ability to programmatically engage a user. Something similar to "prompt_Text_line" illustrated at: http://muldis.com/Muldis_D.html#hello and "io.get_line(s)" at: http://duro.sourceforge.net/docs/durodt/tut.html (see: Control statements). Scripts could be written to g...
by steved
Sun Aug 30, 2015 7:23 am
Forum: Discussion
Topic: Another plug for Rel
Replies: 0
Views: 7505

Another plug for Rel

Chris Date and the Relational Model
22 August 2014
https://www.simple-talk.com/opinion/opi ... nal-model/
by steved
Thu Aug 27, 2015 6:31 am
Forum: Language Issues
Topic: Constraint message
Replies: 1
Views: 2910

Constraint message

I would like to see Rel offer some mechanism for allowing a user defined text message to
accompany a constraint violation. The more information conveyed in an application the better.

thanks,
steve
by steved
Fri Aug 14, 2015 6:23 am
Forum: Discussion
Topic: Anticipating NatTable
Replies: 6
Views: 6791

Re: Anticipating NatTable

Using external data sources in Rel sounds great!
by steved
Wed Aug 12, 2015 5:51 am
Forum: Discussion
Topic: Anticipating NatTable
Replies: 6
Views: 6791

Re: Anticipating NatTable

Version 1.0.13 looks and sounds great! I really hope it attracts new users. Is Berkeley Java DB still being used in any way? There is no relationship between NatTable and binding relvars to external data sources. The latter is a feature of the Rel dialect of Tutorial D. When we bind to an external d...
by steved
Tue Aug 11, 2015 8:15 am
Forum: Discussion
Topic: Messaging
Replies: 1
Views: 2780

Messaging

Hello, Is there any way to shut off messaging? In an operator I have a FOR statement that does manipulation and displays information. In the middle of the FOR and within its displays I get the "Inserted xx tuples.". In other cases I do get the message at the end. It would be nice if the "Inserted......
by steved
Tue Aug 11, 2015 12:03 am
Forum: Discussion
Topic: Anticipating NatTable
Replies: 6
Views: 6791

Re: Anticipating NatTable

NatTable is a grid widget that integrates with the SWT widgets (see https://en.wikipedia.org/wiki/Standard_Widget_Toolkit) that I've used to build the new Rel user interface (which was formerly known as DBrowser.) Will applications written in Rel version 1.0.12 run unchanged in version 1.0.13? Will...
by steved
Sun Aug 09, 2015 3:46 am
Forum: Discussion
Topic: Anticipating NatTable
Replies: 6
Views: 6791

Anticipating NatTable

Hello, Can you give your users some idea of what we can expect with the introduction of NatTable.What was your motivation for it? What do you hope it will accomplish, for Rel neophyte users, for more sophisticated users. Is stored Rel data (in Berkeley Java DB) going to be accessed thru NatTable in ...