RE: MySQL - program netadmin.exe ( for Windows )
To access the Unix database from NT, there is a good tool I use called webmin (http://www.webmin.com/). It is written in perl and uses a http connection through a different port. I don't know about connecting to NT from Unix, I only have databases on Linux. len. -Original Message- From: Humberto Quintao [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 4 April 2001 08:31 To: [EMAIL PROTECTED] Subject: En: MySQL - program netadmin.exe ( for Windows ) Importance: High Friends, I need to manager database MySQL on UNIX Server from Windows NT and I found the software netadmin.exe, that it is very good, written and maintained by David Axmark. I didnt find how to create tables on UNIX server from windows NT... If somebody knows how to do this, please tell me ! I need too how to access databases on Windows NT from UNIX Server. Thank you ! Humberto Quintao [EMAIL PROTECTED]
RE: parse error
Petra,
You have a close '}' with no open '{'. Maybe you should move the If
statement to the next line, then it won't be commented out.
len.
-Original Message-
From: Petra [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, 27 March 2001 13:21
To: [EMAIL PROTECTED]
Subject: parse error
can anybody help?
I get this error
Parse error: parse error in mypath to file\Default.php on line 18
I am just learning right now so if you could help me with what I did wrong
her I'd apreciate it.
Thanx Petra
[EMAIL PROTECTED]
HTML
HEAD
TITLE Our List of Historic Products /TITLE
HEAD
BODY
?php
// Connect to the database server
$dbcnx = @mysql_connect("localhost", "root", "");
if (!$dbcnx) {
echo( "PUnable to connect to the " .
"database server at this time./P" );
exit();
}
// Select the jokes database if (! @mysql_select_db("JShistbau") ) {
echo( "PUnable to locate the historic products " .
"database at this time./P" );
exit();
}
?
P Here are all the products in our database: /P
BLOCKQUOTE
?php
// Request the text of all the products
$result = mysql_query(
"SELECT catdescription FROM categories"); if (!$result) {
echo("PError performing query: " . mysql_error() . "/P");
exit(); }
// Display the text of each product in a paragraph while ( $row =
mysql_fetch_array($result) ) {echo("P" . $row["catdescription"] .
"/P"); }
?
/BLOCKQUOTE/BODY/HTML
-
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RE: Split results
You can use the 'limit' construct on the end of the select statement. So for first query do select blah from blah where blah limit 20; each succeeding query will be select blah from blah where blah limit 20,20; check the doco for explanation. You can do a count to start with to determine how many 'buttons' you require to get all results. hope this helps. len. -Original Message- From: Andres M.V. Paglayan [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 20 March 2001 12:47 To: MySQL Subject: Split results Hi you all, Im trying to resolve how to manage a large resultset (about 500), showing only 20 rows per page and then to have the option to show more results from several buttons, like when you search something with a lot of pages in the yahoo, Best wishes for you all. Thanks in advance. -- Andrs Mariano Vazken Paglayan [EMAIL PROTECTED] --
Unary Relationship.
Hi, I was wondering if anyone could help me with some SQL. I have a product group table that has a link to itself to allow me to build a hierarchy of products. Each Product has a link/relationship to its parent, so I have PRODUCT GROUP PRDGRP_TK Primary Key PRDGRP_FK Foreign key of parent product group. My question is, can I retrieve all parents up the hierarchy using one SQL statement. I know I can use my code, (in php in this case) to keep calling an Sql statement and go up one link at a time. But it would be very handy to be able to simply return the entire product group structure above a particular product group. thanks len.
Re: Unary Relationship.
Almost, and sorry for the ambiguity. I have two tables, Product Group and Product. The product group only contains the 'Product Hierarchy' and the Product table contains all the product information. eg Product Group - Prdgrp_idPrdprn_idName 1 Hardware 2 Software 31Monitors 4317" 52Productivity Software 65Office tools 76Word Processors 86Spreadsheets Product -- Product_id Prdgrp_id Name 17 Msoft Word 28 Msoft Excel 36 Msoft Office So, in the above example, if I have selected Product 2(excel) I want an SQL statement to walk up the product group hierarchy as follows. 8 Spreadsheets 6 Office tools 5 Productivity Software 2 Software I had tried to specify a multiple table structure, but I need unlimited hierarchy depth, and the ability to cross link and even redesign product levels on the fly, so the multiple table approach just won't work in this case. -Original Message- From: Eric Fitzgerald [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 14 March 2001 10:59 To: Leonard Coonan; [EMAIL PROTECTED] Subject: Re: Unary Relationship. Very situational Let me lay out what I *think* your saying your, tell me if I'm right/wrong. You have a table with 3 (or more, but irelevent) columns. A sample of the data is as such: Product | Group | Name 1 | 1 | Full product listing 2 | 1 | Computers 3 | 2 | Motherboards 4 | 2 | Monitors 5 | 3 | Asus 6 | 3 | Tyan And let's say your in the Asus sub section of motherboards, so you want to "step up" the ladder, and find the entire sub path your in... Well, I personally don't see a way to do this right off, what I would end up doing in this case is redesigning the tables. Use a multiple table structure that links to each other, so you can use joins to gather information about categories higher up in the heirarchy. If I misunderstood, please explain. - Original Message - From: "Leonard Coonan" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, March 13, 2001 3:52 PM Subject: Unary Relationship. Hi, I was wondering if anyone could help me with some SQL. I have a product group table that has a link to itself to allow me to build a hierarchy of products. Each Product has a link/relationship to its parent, so I have PRODUCT GROUP PRDGRP_TK Primary Key PRDGRP_FK Foreign key of parent product group. My question is, can I retrieve all parents up the hierarchy using one SQL statement. I know I can use my code, (in php in this case) to keep calling an Sql statement and go up one link at a time. But it would be very handy to be able to simply return the entire product group structure above a particular product group. thanks len.
RE: Any ideas why this would happen....
Further to your comment, I have had considerable benefits by creating an index of both keys as well. So I define 3 indexes userid, usernum, useridusernum. hope this helps. len -Original Message- From: Dan Nelson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 14 March 2001 16:06 To: Bob Silva Cc: [EMAIL PROTECTED] Subject: Re: Any ideas why this would happen In the last episode (Mar 13), Bob Silva said: Hope this isnt a dupe post...I mailed before confirmation was received so I think my post died. Here is the issue I run the query below and it takes forever ( 1+ minutes ). It uses 2 keys (one unique) in the where clause but still does a full table scan. mysql SELECT usernum FROM client WHERE userid='Salty3' OR usernum = 4158774796; | usernum| | 1893996929 | 1 row in set (1 min 33.94 sec) mysql explain SELECT usernum FROM client WHERE userid='Salty3' OR usernum = 4158774796; | table | type | possible_keys | key | key_len | ref | rows| Extra | | client | ALL | PRIMARY,useridIDX | NULL |NULL | NULL | 1586795 | where used | Mysql can only use one index per table. Since using only one of the two possible indexes may not return the requested records (what if it chose the userid index?), it must do a full table scan. Merging the results of two index scans on one table is tricky (Oracle will only do it if hinted), but most of the time it's quicker to just do the full table scan. Your example, of course, is one where it would help. -- Dan Nelson [EMAIL PROTECTED] - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
