Create_the_table.JPG' alt='Mysql Trigger After Update Of Column' title='Mysql Trigger After Update Of Column' />This is MySQL PHP tutorial. In this tutorial, you will learn the basics of database programming in MySQL and PHP language. Learn how to build a complete content management system using PHP and MySQL in just a few hours. Full code download included. Common Queries,MySQL Queries,Common SQL Queries. Find the values of a table column c1 for which there are a specified number of listed values in another column c2. QA for database professionals who wish to improve their database skills and learn from others in the community. Java2s. com Emailinfo at java2s. Demo Source and Support. All rights reserved. Im executing the following in PHP5. CREATE TRIGGER photofulltextinsert AFTER INSERT ON photo FOR EACH ROW INSERT INTO photofulltext SELECT. What is a Database Trigger A database trigger is special stored procedure that is run when specific actions occur within a database. Most triggers are defined to run. Newest Questions Database Administrators Stack Exchange. Mysql Trigger After Update Of Column' title='Mysql Trigger After Update Of Column' />My. SQL PHP tutorial My. SQL programming with PHP. This is a PHP programming tutorial for the My. SQL database. It covers the. My. SQL programming with PHP. It uses the generic mysql module. The examples were created and tested on Ubuntu Linux. There is a similar. My. SQL C API tutorial. My. SQL Python tutorial. Mongo. DB PHP tutorial, and. Postgre. SQL PHP tutorial on Zet. Code. If you need to refresh your knowledge of the PHP language, there is a full. PHP tutorial on Zet. Code. About My. SQL database. My. SQL is a leading open source database management system. It is a multiuser. My. SQL is especially popular on the web. It is one of the parts of the very popular LAMP platform. Linux, Apache. My. SQL, and PHP. Currently My. SQL is owned by Oracle. My. SQL database is available. OS platforms. It runs on BSD Unix, Linux, Windows, or Mac OS. Wikipedia and You. Tube use My. SQL. These sites manage millions of queries. My. SQL comes in two versions My. SQL server system and My. SQL. embedded system. Before we start. We need to install several packages to execute the examples in this tutorial. The php. 5 cli is the command line interpreter for the PHP5 programming language. All examples in this tutorial are created on the console. I have intentionally skipped. PHP and My. SQL. If you dont already have My. SQL installed, we must install it. This command installs the My. SQL server and various other packages. While installing the package, we are prompted to enter. My. SQL root account. Next, we are going to create a new database user and a new database. We use the mysql client. We check if the My. SQL server is running. If not, we need. to start the server. On Ubuntu Linux, this can be done. The above command is a common way to start My. SQL if we have. installed the My. SQL database from packages. The above command starts My. SQL server using the My. SQL server. startup script. The way how we start a My. SQL server might. It depends whether we have installed My. SQL. from sources or from packages and also on the Linux distro. For further information consult. Mac Os X Leopard 10 5 10 51 Band there. My. SQL first steps. Linux distro information. Next, we are going to create a new database user and a new database. We use the mysql client. Enter password. Welcome to the My. SQL monitor. Commands end with or g. Your My. SQL connection id is 3. Server version 5. Ubuntu. Type help or h for help. Type c to clear the buffer. SHOW DATABASES. Database. We use the mysql monitor client application to connect to the. We connect to the database using the root account. We show all available. SHOW DATABASES statement. CREATE DATABASE mydb. Query OK, 1 row affected 0. We create a new mydb database. We will use this database throughout. CREATE USER user. IDENTIFIED BY 3. Query OK, 0 rows affected 0. USE mydb. Database changed. GRANT ALL ON mydb. Query OK, 0 rows affected 0. We create a new database user. We grant all privileges to this user. In order to connect to the My. SQL database from the PHP language, we must have. This is a package name for. DebianUbuntu Linux. On other derivatives the name might differ. This package. has three modules. They are also called extensions. The generic mysql module is the original PHP API for the My. SQL. database. Our tutorial covers this module. The API is procedural. This module does not provide all the latest features of the newer. My. SQL databases. The My. SQL improved mysqli module is the. My. SQL versions 4. It provides both. APIs. It has several benefits and enhancements. The pdomysql, PHP Data Objects module is a database abstraction. PHP applications. This module is beneficial if we write portable. PHP scripts. The following script is a simple PHP script. If this small. script runs OK, we have everything needed installed. Could not connect to servern. EUSERERROR. echo Connection establishedn. We connect to the database and get some info about the My. SQL server. host localhost. These are three variables holding the host name, user name and password. The variables are needed when connecting to the My. SQL database. r mysqlconnecthost, user, pass. We use the mysqlconnect function to connect. The function returns a boolean value indicating. The function has 3 parameters. The first is the host, where. The second and third parameters are the user name. Could not connect to servern. EUSERERROR. echo Connection establishedn. Now we check the r variable. If it contains a boolean false, the. We call the triggererror. The first generic message. The more specific error message generated with the. The mysqlgetserverinfo returns the My. SQL server version. The mysqlclose function closes the connection. Closing connection in our case is not necessary. However, it is a good programming practice. On my system, I got the following output. We have a similar script. Could not connect to servern. EUSERERROR. echo Connection establishedn. SELECT VERSION. Could not execute query queryn. EUSERERROR. echo Query query executedn. Version row0n. We check for the version of the My. SQL database. This time using. SELECT VERSION. This is the SQL SELECT statement. It returns the version. The VERSION is. My. SQL function. The mysqlquery function executes an SQL. This is a SELECT query, so the result is. Could not execute query queryn. EUSERERROR. echo Query query executedn. In case of an error we generate an error message. Otherwise. we print the SQL query executed. We fetch a row from the result set. The row variable. Version row0n. We print the data from the array. We know from the nature of our. My. SQL version. php version. Connection established. Query SELECT VERSION executed. Version 5. 1. 6. Output of the script on our system. Creating and populating a table. Next we are going to create a database table and fill it with data. Cannot execute query queryn. Query query executedn. Could not connect to servern. EUSERERROR. echo Connection establishedn. Cannot select databasen. EUSERERROR. echo Database selectedn. DROP TABLE IF EXISTS Cars. CREATE TABLE CarsId INT PRIMARY KEY, Name TEXT. Price INT ENGINEInno. DB. executequeryquery. INSERT INTO Cars VALUES1,Audi,5. INSERT INTO Cars VALUES2,Mercedes,5. INSERT INTO Cars VALUES3,Skoda,9. INSERT INTO Cars VALUES4,Volvo,2. INSERT INTO Cars VALUES5,Bentley,3. INSERT INTO Cars VALUES6,Citroen,2. INSERT INTO Cars VALUES7,Hummer,4. INSERT INTO Cars VALUES8,Volkswagen,2. In the above code example, we create a Cars table with 8 rows. Cannot execute query queryn. Query query executedn. We have created a custom executequery function which will. INSERT statement. Before we can work with database tables, we must select a database. A database is selected with a mysqlselectdb function. Cannot select databasen. EUSERERROR. echo Database selectedn. Error handling for the database selection process. DROP TABLE IF EXISTS Cars. The first query drops a Cars table if it already exists. CREATE TABLE CarsId INT PRIMARY KEY, Name TEXT. Price INT ENGINEInno. DB. executequeryquery. This is the SQL statement to create the Cars table. INSERT INTO Cars VALUES1,Audi,5. A car is inserted into the table. Cannot execute query. In case of an error, we print the error message and. Connection established. Database selected. Query DROP TABLE IF EXISTS Cars executed. Query CREATE TABLE CarsId INT PRIMARY KEY, Name TEXT. Price INT ENGINEInno.