Open Query Builder — FastReport Forum

Dynamically update/assign @parameter in query

jungsjan — Sat, 13 Feb 2021 03:15:55 +0000

Hi,

I've got a query which passes correctly in mysql.

Problematic in FastReport query window is:

...

@SecI := t.TimestampCol AS ChangeTime

...

This line is not a static parameter assignment but its being used as a dynamically updated variable for:

IF(@SecI = 0, 0, TIMESTAMPDIFF(SECOND, @SecI, t.TimestampCol)) AS SecI

@SecI is initialized in the query as: SELECT @SecI := 0

Both cases of using ":=" (colon-equal-sign- /assignment-) operator together with @ (at-operator) operator result in an error.

On "define parameter" page within FastReport query wizard @SecI is defined as double with default value zero.

I could probably go with:

1) "Expression" an create my "@SecI := t..." dataset elsewhere and reference it my original query

2) Rewrite the query to calculate SecI differently

But: I am interested in this specific self-consistent implementation.

Do you have any suggestions how to syntactically write this in a FastReport compatible way using the (":=") assignment operator?

Kind regards

QBuilder modified to support "inner joins"

rodries — Mon, 20 Sep 2004 10:52:01 +0000

Hi

I've modified QBuilder to support inner joins and links correctly
Where can I sebd modifications to review and merge in future versions?

Regards

Open QBuilder converted for Lazarus - Laz Query Builder

jepafi — Fri, 15 Feb 2013 13:54:10 +0000

I created a modified version of the Open Query Builder to compile in Lazarus. It's working perfectly, with all the resources in Windows and Linux GTK2 and QT. I created also an enginer to connect with a suite of components ZEOS.

I wonder if you have any objections to what I did? And what you allow me to do with the modified code?

Link to Laz Query builder: https://github.com/jepafi/Laz_Query_Builder

Discussion what is happening in Lazarus forum: http://www.lazarus.freepascal.org/index.php/topic, 19927.0.html

Dialog problems

cinnamon — Wed, 12 Oct 2005 13:40:34 +0000

Hi,
I am very new to FR, in fact I am a 4 Hour old user.
I have succesfully craeted a report accessing data from my Interbase database.

I have added a From Date and To Date selection where I want the data viewed in my report to range from & include the From Date as selected up to and including the To Date as selected.

I would also like the "DateEdit control" to default to the date of the day and not stick to the date that I designed the report on.

Any suggestions for a SQL query?

OQBuilder with Where implementation

FRNL — Wed, 18 Feb 2004 11:40:48 +0000

Hi all,

After sending a couple of mail messages about this:

I have an adapted version of OQBuilder available to submit to FastReport. It has two extra functionalities:

1. New engine to support Zeoslib components
2. Added where support with field and value selection dialog to get working SQL out of it.

Where to send the sources?

Regards,
Teo

Licence Question Open Query Builder

duabrunner — Mon, 30 Jan 2006 10:30:34 +0000

Hello,

is it allowed to modify the OpenQueryBuilder-Code
and use it in a commercial app?

Sincerely,

duabr

Fast Query Buider

Colin McIver — Wed, 21 Sep 2005 10:48:23 +0000

Has anyone the created code required for DBISAM engine for Fast Query Buider?

I've tried with no success.

Fast Query Builder and BCB 5/IBO

Bernd — Wed, 14 Sep 2005 13:16:17 +0000

Hi,
I am a newbie on using FastReport3.

I want to use FastReport with the Fast QueryBuilder on
the Borland C++ Builder 5 and IBObjects.

Got problems on finding the beginning.
How to use/start the Fast QueryBuilder?
Looking out for documentation but nothing found.

Any experiences out there?

Loading of files and tables

barry — Thu, 30 Jun 2005 20:45:03 +0000

I purchased a copy of query builder and simply wanted to load the tables and fields using using a web service. Has any do this as of yet? Just curious.

Dif between Open and Purchaed QB

barry — Wed, 22 Jun 2005 12:34:23 +0000

Can someone tell be what's the difference between the open version of QB and the purchased QB? I need a version that will run on D2005 and will allow me to add my own db connection - web services. I need to populate the tables and fields through a web service call so I'll need to build this method. Does the purchased copy give you source? Any help would be appreciated.

AV: when selecting a field

manny2463 — Fri, 17 Oct 2003 14:06:32 +0000

I installed OQB on delphi6. I compiled the bde demo and run it.
When I try to select a field from a table to be include in the sql statement
I get an AV at the line below. ( see ***** AV: HERE *******)

procedure TOQBLbx.ClickCheck;
var
iCol: Integer;
begin
inherited;
if FLoading then
Exit;

if Checked[ItemIndex] then
begin
TOQBForm(GetParentForm(Self)).QBGrid.Insert( // ***** AV: HERE *******
TOQBForm(GetParentForm(Self)).QBGrid.ColCount,
Items[ItemIndex], TOQBTable(Parent).FTableName);
end

any news on a OQB update?

snorkel — Tue, 07 Jun 2005 05:15:22 +0000

Anyone know if a new release is coming soon?

Qbuilder still alive?

snorkel — Mon, 25 Apr 2005 18:55:41 +0000

Is open qbuilder still alive?

Install problem ADO engine

Willeboer — Thu, 20 Jan 2005 13:16:43 +0000

I'm trying to install ADO engine. I'm doing the following (Borland C++ Builder 5):

Install component into existing package, selecting package OQB50.bpk, selecting module QBEADOReg.pas.

Include and Lib paths all point to the correct places to include everything in sight, but I get the error:

Cannot load package "OQB50". It contains unit "AdoInt,", which is also contained in package "vclado50"

Any ideas on how to resolve this?

located serious bug and have solution

snorkel — Mon, 01 Nov 2004 23:19:17 +0000

There is a serious bug in the latet QB.

In the following proc:

procedure TOQBTable._CloseBtn(Sender: TObject);
begin

TOQBArea(Parent).UnlinkTable(Self);
TOQBForm(GetParentForm(Self)).QBGrid.RemoveColumn4Tbl(FTableName);
Parent.RemoveControl(Self);
free;
end;

The free is causing a access violation because you are freeing the container of the close button while you are still in the close buttons close event.

I am not sure what would be the best way for a permenant fix, but I came up with this

procedure TOQBTable._CloseBtn(Sender: TObject);
begin
try
TOQBArea(Parent).UnlinkTable(Self);
TOQBForm(GetParentForm(Self)).QBGrid.RemoveColumn4Tbl(FTableName);
Parent.RemoveControl(Self);
postmessage(mainform.Handle,DM_CLOSETABLE,integer(self),integer(self));
except
on e:exception do
showmessage(e.Message);
end;

end;

I send the integer value of the toqbtable via post message to the main form where I free it and then the AV is gone.

I am not sure how to solve this without using a windows message.

Any ideas?

Thanks,

snorkel

bug in Qbuilder

snorkel — Mon, 01 Nov 2004 22:09:20 +0000

Hi,
I just downloaded the latest qbuilder (4.01) and thereis a bug when you close inserted tables, not everytime and it seems to be the last one left that causes it.
basicly a AV pops up complaining about a illegal operation on memory bla bla

The error occurs on the compiled BDE demo that is included.

If anyone has found the solution please let me know.

So far I have not been able to track it down.

Thanks,

Snorkel

QueryBuild in way Designer

luciano_f — Fri, 29 Oct 2004 12:38:45 +0000

It would be interesting that the component that QueryBuilder to work in designer way now he only works in runtime way, and it would be great if he began to work
with querys in way designer in the you go of the delphi.

You could program her to do that.
Thankful.
Luciano Fran?§a.

FIB Support

loufeliz — Sat, 01 May 2004 15:42:34 +0000

Hello,

As part of FR 2.52 install, I am enabling OQB and I would like to use it with latest release of FIB. Package does not want to compile, anyone succesful at getting package loaded. The BDE one works fine as is expected.

- Lou

Open Query Builder & FastReports

brekhof — Mon, 05 Apr 2004 21:39:15 +0000

It looks like my FR 2.51 already contains a part of OQB (if so, where)? Is there a way to have the functionality of OQB surface to the end-user or if this only possible if you do not user FR (which I can not imagine, makes no sense).

regards,
Martin

Install Problem:

wkuehnis — Wed, 24 Dec 2003 11:58:29 +0000

I am trying to install the Open Query Builder packages into Delphi 7 along side FastReport 2.51.

I am getting the following error:

Cannot load package 'OQB70.' It contains unit 'QBAbout, ' which is also contained in package 'FR7'.

Any suggestions?

Configure to use with DBISAM

msalinas — Mon, 20 Oct 2003 18:45:29 +0000

What are the steps to configure OPB to work with DBISAM Tables?

Any Information will be appreciated.

Regards.

Conflict With FR2.51?

neillans — Fri, 21 Nov 2003 10:37:48 +0000

FIB+

eballinas — Fri, 17 Oct 2003 16:23:51 +0000

Just a copy from the delphi error when I am trying to install the package:
[Fatal Error] OQBFIB60.dpk(33): Required package 'ascstd' not found

Welcome!

Samuray — Fri, 17 Oct 2003 13:21:00 +0000

Welcome to our new forum!