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What Is a Result Set Object
What Is a Result Set Object? - PHP Script Tips - Working with MySQL Database A result set object is a logical representation of data rows returned by mysql_query() function on SELECT statements. Every result set object has an internal pointer used to identify the current row in the result set. Once ... 2007-04-19, 5025👍, 0💬

What Are the File Upload Settings in Configuration File
What Are the File Upload Settings in Configuration File? - PHP Script Tips - Uploading Files to Web Servers There are several settings in the PHP configuration file related to file uploading: file_uploads = On/Off - Whether or not to allow HTTP file uploads. upload_tmp_dir = directory - The temporar... 2007-04-19, 5626👍, 0💬

How To Use Subqueries with the IN Operator
How To Use Subqueries with the IN Operator? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements A subquery can be used with the IN operator as "expression IN (subquery)". The subquery should return a single column with one or more rows to form a list of values to be used by the IN operation... 2007-04-19, 4963👍, 0💬

How To Insert Rows Based on SELECT Statements
How To Insert Rows Based on SELECT Statements? - PHP Script Tips - Working with MySQL Database If want to insert rows into a table based on data rows from other tables, you can use a sub-query inside the INSERT statement as shown in the following script example: &lt;?php include "mysql_connectio... 2007-04-19, 4977👍, 0💬

How To Uploaded Files to a Table
How To Uploaded Files to a Table? - PHP Script Tips - Uploading Files to Web Servers To store uploaded files to MySQL database, you can use the normal SELECT statement as shown in the modified processing_uploaded_files.php listed below: &lt;?php $con = mysql_connect("localhost", "", ""); mysql_s... 2007-04-19, 5152👍, 0💬

How To Insert Data into a Table
How To Insert Data into a Table? - PHP Script Tips - Working with MySQL Database If you want to insert a row of data into a table, you can use the INSERT INTO statement as shown in the following sample script: &lt;?php include "mysql_connection.php"; $sql = "INSERT INTO fyi_links (id, url) VALUE... 2007-04-19, 4771👍, 0💬

How To Use Subqueries with the EXISTS Operator
How To Use Subqueries with the EXISTS Operator? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements A subquery can be used with the EXISTS operator as "EXISTS (subquery)", which returns true if the subquery returns one or more rows. The following statement is a good example of "EXISTS (subq... 2007-04-19, 5085👍, 0💬

How To Count Groups Returned with the GROUP BY Clause
How To Count Groups Returned with the GROUP BY Clause? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If you use the COUNT(*) function on groups returned with the GROUP BY clause, it will count the number of rows within each group, not the number of groups. If you want to count the num... 2007-04-19, 5483👍, 0💬

How To Use Subqueries in the FROM clause
How To Use Subqueries in the FROM clause? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If you have a query returning many rows of data, and you want to perform another query on those rows, you can put the first query as a subquery in the FROM clause of the second query. The following... 2007-04-19, 4901👍, 0💬

How To Get the Technical Specifications for File Upload
How To Get the Technical Specifications for File Upload? - PHP Script Tips - Uploading Files to Web Servers File upload technical specifications is provided in "Form-based File Upload in HTML - RFC 1867". You can get a copy from http://www.ietf.org/rfc/rfc186 7.txt. 2007-04-19, 5039👍, 0💬

What Is a Session
What Is a Session? - PHP Script Tips - Understanding and Using Sessions A session is a logical object created by the PHP engine to allow you to preserve data across subsequent HTTP requests. There is only one session object available to your PHP scripts at any time. Data saved to the session by a sc... 2007-04-19, 5054👍, 0💬

How To Get the Number of Rows Selected or Affected by a SQL Statement
How To Get the Number of Rows Selected or Affected by a SQL Statement? - PHP Script Tips - Working with MySQL Database There are two functions you can use the get the number of rows selected or affected by a SQL statement: mysql_num_rows($rs) - Returns the number of rows selected in a result set obj... 2007-04-19, 5054👍, 0💬

How To Create a Table
How To Create a Table? - PHP Script Tips - Working with MySQL Database If you want to create a table, you can run the CREATE TABLE statement as shown in the following sample script: &lt;?php include "mysql_connection.php"; $sql = "CREATE TABLE fyi_links (" . " id INTEGER NOT NULL" . ", url VARCH... 2007-04-19, 5041👍, 0💬

How To Return Top 5 Rows
How To Return Top 5 Rows? - Oracle DBA FAQ - Understanding SQL SELECT Query Statements If you want the query to return only the first 5 rows, you can use the pseudo column called ROWNUM in the WHERE clause. ROWNUM contains the row number of each returning row from the query. The following statement ... 2007-04-18, 5746👍, 0💬

What Is a Transaction
What Is a Transaction? - Oracle DBA FAQ - Understanding SQL Transaction Management A transaction is a logical unit of work requested by a user to be applied to the database objects. Oracle server introduces the transaction concept to allow users to group one or more SQL statements into a single tran... 2007-04-18, 4976👍, 0💬

How To Turn On the Session Support
How To Turn On the Session Support? - PHP Script Tips - Understanding and Using Sessions The session support can be turned on automatically at the site level, or manually in each PHP page script: Turning on session support automatically at the site level: Set session.auto_start = 1 in php.ini. Turni... 2007-04-18, 5113👍, 0💬

How To Save Values to the Current Session
How To Save Values to the Current Session? - PHP Script Tips - Understanding and Using Sessions When session is turned on, a session will be automatically created for you by the PHP engine. If you want to save any values to the session, you can use the pre-defined associative array called $_SESSION.... 2007-04-18, 5271👍, 0💬

How To Run a SQL Statement
How To Run a SQL Statement? - PHP Script Tips - Working with MySQL Database You can run any types of SQL statements through the mysql_query() function. It takes the SQL statement as a string and returns different types of data depending on the SQL statement type and execution status: Returning FALSE... 2007-04-18, 4991👍, 0💬

How To Select an Exiting Database
How To Select an Exiting Database? - PHP Script Tips - Working with MySQL Database The first thing after you have created a connection object to the MySQL server is to select the database where your tables are locate, by using the mysql_select_db() function. If your MySQL server is offered by your W... 2007-04-18, 5071👍, 0💬

How To Get the Last ID Assigned by MySQL
How To Get the Last ID Assigned by MySQL? - PHP Script Tips - Working with MySQL Database If you use an ID column with AUTO_INCREMENT attribute, you can use the mysql_insert_id() function to get the last ID value assigned by the MySQL server, as shown in the sample script below: &lt;?php include... 2007-04-18, 5649👍, 0💬

How To Create a Database
How To Create a Database? - PHP Script Tips - Working with MySQL Database A database in a MySQL server is a logical container used to group tables and other data objects together as a unit. If you are a the administrator of the server, you can create and delete databases using the CREATE/DROP DATABA... 2007-04-18, 5195👍, 0💬

How To Retrieve Values from the Current Session
How To Retrieve Values from the Current Session? - PHP Script Tips - Understanding and Using Sessions If you know some values have been saved in the session by an other script requested by the same visitor, you can retrieve those values back by using the pre-defined associative array called $_SESSIO... 2007-04-18, 5104👍, 0💬

How To End the Current Transaction
How To End the Current Transaction? - Oracle DBA FAQ - Understanding SQL Transaction Management There are several ways the current transaction can be ended: Running the COMMIT statement will explicitly end the current transaction. Running the ROLLBACK statement will explicitly end the current transa... 2007-04-18, 4868👍, 0💬

How To Start a New Transaction
How To Start a New Transaction? - Oracle DBA FAQ - Understanding SQL Transaction Management There is no SQL statement to explicitly start a new transaction. Oracle server implicitly starts a new transaction with the following two conditions: The first executable statement of a new user session will ... 2007-04-18, 5004👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML