MySQL via PHP-Tunnel (über eigene libmysql.dll)

[omata]

Dieses Projekt ermöglicht den Zugriff auf eine MySQL-Datenbank über ein PHP-Skript.

Dabei werden folgende Punkte untersützt:

• Lesender Zugriff
• Schreibender Zugriff
• Transactionsteuerung
• Auslesen von Systeminformationen
• Funktioniert auch im Designmodus von Delphi
• Stellt den Zugriff über TDataset zur Verfügung, damit können alle normalen Datenbankkomponenten verwendet werden

[Sir Rufo]

Zitat von teosuper:

The answer is not complete. I agree to the quotes but the assignment ":=" is Pascal, not SQL. So you have to change that to "=".

Sorry.. Neither English nor German so I forgot what the ":" is called Good luck!

If you agree to the double quotes why do you claim anything inside the string value 'AA:=1234; bbA' to be Pascal or SQL? It is just a string and can contain anything you like and will not be handled by Pascal or SQL. It is just a value

[teosuper]

Ja, stimmt schon.. Nicht gut hingeschaut..

Indeed.. the whole part in quotes is inserted in a field in the database so the Pascal ":=" does not matter nor affect anything.

[sippytom]

Just did some tests and still got the error

Code:

DROP TABLE IF EXISTS nodes;
CREATE TABLE nodes (
  node_id int,
  parent_id int,
  bez TEXT,
  CONSTRAINT PK_nodes PRIMARY KEY (node_id),
  CONSTRAINT FK_nodes_parent FOREIGN KEY (parent_id) REFERENCES nodes (node_id)
) ENGINE=InnoDB;

INSERT INTO nodes VALUES (1, NULL, 'A');
INSERT INTO nodes VALUES (2, 1, 'AA');
INSERT INTO nodes VALUES (3, NULL, 'B');
INSERT INTO nodes VALUES (4, 2, "AA=1234; bbA");

Still have error on the bottom line.
So not everything enclosed in quotes is passed as a string?

Tom

[teosuper]

Hello Tom,

MySQL will not accept double quotes I guess. The double quotes are only valid from within Delphi.
Your SQL statement should work if you quote the string in the last line just like the others.

[sippytom]

Hi,

Single quotes is how I had it before. Still with the error.
Maybe it has something to do with the transfer of data between zeos and the tunnel php file.

Tom

[teosuper]

I executed this in Heidisql without errors:

DROP TABLE IF EXISTS nodes;
CREATE TABLE nodes (
node_id int,
parent_id int,
bez TEXT,
CONSTRAINT PK_nodes PRIMARY KEY (node_id),
CONSTRAINT FK_nodes_parent FOREIGN KEY (parent_id) REFERENCES nodes (node_id)
) ENGINE=InnoDB;

INSERT INTO nodes VALUES (1, NULL, 'A');
INSERT INTO nodes VALUES (2, 1, 'AA');
INSERT INTO nodes VALUES (3, NULL, 'B');
INSERT INTO nodes VALUES (4, 2, 'AA=1234; bbA');

Maybe very stupid question but if the sql I post does not work for you, what happens if you replace the ";"? That could very well be a delimiter in the PHP tunnel..

[sippytom]

I am using an sql tunnel demo from the 1st post.
I just need a way to connect to a mysql database using tunneling.
I have not done a check but is Heidisql a sql tunnel?

I am using Delphi 7

[teosuper]

HeidiSql is a tool like phpMyadmin.

I have a few general suggestions: first is to replace the ";" with some different character. If that works, at least you know what the issue is.

A quick work around: if you use stringreplace to replace ";" when posting and another stringreplace when retrieving the data, your problem should be worked around.

[sippytom]

Thanks, yes I think I will test various characters that I can set on the way to the database and reset on the way out.

Tom