What are the advantages and disadvantages of MySQL?

Satyam,

What is the difference between GROUP BY and ORDER BY in Sql?

Creative, Renault Nissan, Trikon Networks,

What is the difference between char and varchar data types?

How to load data from a text file into a table?

Sasaa,

How can we know the number of days between two given dates using MySQL?

Base2 Infotech, Webworks,

How can we change the name of a column of a table?

How can we change the name and data type of a column of a table?

Google,

What are the differences between drop a table and truncate a table?

A select query over a large table runs very slow because of the growing number of entries in that table. What different measures could be taken to improve speed?

A company wants to store their invoices in a database. They already have their customers and articles in that database. Both customer and article are each identified by an unique integer value. Please create the SQL statements for creating the necessary table(s) for storing the invoices in a MySQL database. An invoice should hold information like invoice number, customer, date, article(s) and quantity etc.

For the database from the previous question, please give an SQL query which returns the invoice number of all invoices which contain the article with the number ?1234?. The query should be able to run under a MySQL 4.0 database.

How would you backup and restore a big MySQL database? What are the advantages of the approach which you have taken over the others?

What are the differences between MySQL_fetch_array(), MySQL_fetch_object(), MySQL_fetch_row()?

Explain MySQL optimization?

The table tbl_sites contains the following data: ----------------------------------------------------- Userid sitename country ------------------------------------------------------ 1 sureshbabu indian 2 PHPprogrammer andhra 3 PHP.net usa 4 PHPtalk.com germany 5 MySQL.com usa 6 sureshbabu canada 7 PHPbuddy.com pakistan 8. PHPtalk.com austria 9. PHPfreaks.com sourthafrica 10. PHPsupport.net russia 11. sureshbabu australia 12. sureshbabu nepal 13. PHPtalk.com italy Write a select query that will displayed the duplicated site name and how many times it is duplicated?

Afixi, GE,