PHP and MySQL Web Development 4th Ed-tqw-_darksiderg

13
Advanced MySQL Programming
IN THIS CHAPTER,YOU LEARN ABOUT SOME more advanced MySQL topics, including
table types, transactions, and stored procedures.
Key topics covered in this chapter include
n The LOAD DATA INFILE statement
n Storage engines
n Transactions
n Foreign keys
n Stored procedures
The LOAD DATA INFILE Statement
One useful feature of MySQL that we have not yet discussed is the LOAD DATA INFILE
statement.You can use it to load table data in from a file. It executes very quickly.
This flexible command has many options, but typical usage is something like the
following:
LOAD DATA INFILE “newbooks.txt” INTO TABLE books;
This line reads row data from the file newbooks.txt into the table books. By default,
data fields in the file must be separated by tabs and enclosed in single quotation marks,
and each row must be separated by a newline (\n). Special characters must be escaped
out with a slash (\). All these characteristics are configurable with the various options of
the LOAD statement; see the MySQL manual for more details.
To use the LOAD DATA INFILE statement, a user must have the FILE privilege discussed
in Chapter 9,“Creating Your Web Database.”