Solved

How to execute Interbase SQL commands with Delphi code

Posted on 1997-05-20
1
260 Views
Last Modified: 2010-04-04
Last week, I bought Delhi 3 Professional, which comes with a local InterBase database server, but sadly without any manuals concerning how to use Interbase databases from within Delphi.

Until now, I succesfully created some tables, one named documents, and one named objects.  The documents table was created using the folowing SQL statement :
 
 CREATE TABLE DOCUMENTS (
   DOC_ID INTEGER NOT NULL,
   DOC_TYPE CHAR(25),
   DOC_NBR_OBJ INTEGER NOT NULL,
   DOC_ROOT_OBJ INTEGER,
   DOC_INFO_OBJ INTEGER,
   DOC_CRE_DATE DATE DEFAULT "NOW" NOTNULL,
   DOC_MOD_DATE DATE
 )
 
I also created a generator, which gives a unice incremental number to each document record :
 
 CREATE GENERATOR DOC_ID_GEN;
 SET GENERATOR DOC_ID_GEN TO 14
 
 The trigger :
 
 CREATE TRIGGER SET_DOC_ID FOR DOCUMENTS BEFORE INSERT POSITION 0 AS
 BEGIN
      NEW.DOC_ID = Gen_ID (DOC_ID_GEN, 1);
 END
 
 Now I used an SQL command from withing the Database explorer to test if this trigger works correctly :

 INSERT INTO DOCUMENTS (DOC_TYPE, DOC_NBR_OBJ)
 VALUES ('Cre w SQL in DB Explorer', 3);
 
 Until here everything works correctly.  The record is added, and it is given a unique number which increments for each added record.
 
 Now comes my question : How can I code such commands into Delphi ? Is there some way I can execute SQL commands from withing the code of a Delphi program, which components should I use, and how do I code it.

If anybody can help me with this problem, I would really appreciate it.
 
 Any comments or help can be sent to :
 
 --
 
 Stefaan Lesage
 Fotek nv; Belgium
 Stefaan@fotek.com
0
Comment
Question by:Kingetje
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 7

Accepted Solution

by:
RBertora earned 100 total points
ID: 1336506
Yes you can execute these commands from delphi.

You must create an alias to the IB database using the BDE configuration utility.

you should simply provide a path and file name of the .GDB interbase database file on your machine,
also a preffered logon name....

After having created the alias, I have found that you  must reboot the machine after.

Now the delphi code:

drop a TQuery on your form, set the DatabaseNAme property to your alias, this should be a drop down list including your new alias.

You can edit the SQL property, here you should place your query:

Insert into documents.... etc

then from say Button1click  you can call Query1.ExecSql;

This will do what you want it too.

Cheers,
Rob.






0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question