YOUR WEBSITE

The INFORMATION_SCHEMA is a virtual database that is automatically created and populated by MySQL, there is no need to create an INFORMATION_SCHEMA database. There also is no associated file structure due to the fact that the contents of the data are actual views, rather than logical data being stored in any one location. Only SELECT statements are allowed against the tables in the INFORMATION_SCHEMA database. The following SELECT example demonstrates some of the metadata that can be viewed: <?php // Load variables used in mysql_connect and connect to server include "connect_info.php"; $linkID1 = mysql_connect($dbhost,$dbuser,$dbpass) or die("Could not connect to MySQL server"); // Execute Query to Collect Metadata $query = "SELECT TABLE_NAME, ENGINE, TABLE_ROWS, UPDATE_TIME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='world'"; $results = mysql_query($query, $linkID1); // Build HTML Table of Results print "<table

            There are many clauses, and combinations thereof, that can be used with a SELECT statement to yield  particular table query results.  They range from very basic, commonly-used options to very specialized and  complex.  The following basic, optional clauses will be covered in this section:  Clauses                   Definition DISTINCT                Eliminates duplicate row data  FROM                      Specifies what table(s) to retrieve data from  WHERE                   Decides what data to show  ORDER BY             Sorts data by specified order criteria  LIMIT                        Reduces the amount of records received  Example of SELECT statement with clauses:  SELECT DISTINCT values_to_display FROM table_name WHERE expression ORDER BY how_to_sort LIMIT row_count;               The above syntax shows the correct order and usage of each of the above optional clauses.  This statement is specifically  selecting  distinct data rows  from a named ta