SQL tutorial-Retrieve data

Retrieve data

To retrieve data from a database file, you need to use a SELECT statement. You can use the select statement to get data from a single field(column) or the combinations of many fields. In the first example, we use the SELECT statement get data from a single field(BookID) from the database named TblBook and the next example we use the SELECT statement to get data from two fields(BookID and Title), and the last example we select data from all fields of the TblBook table.

TblBook table:

BookID	PublisherID	Title	ISBN
B001	P001	Microsoft Access 2007	123-456-435678-9
B002	P002	C programming language for beginners	234-456-9876523-8
B003	P003	C++ programming from the ground up	345-451-890087-2

-Retrieve data from a BookID field:
SELECT field-name
FROM table-name;

Example1:
SELECT BookID
FROM TblBook

Result:

BookID

B001

B002

B003

-Retrieve data from more than one field:
SELECT field-name1,field-name2,...
FROM table-name;
Example2:
SELECT BookID,Title
FROM TblBook

Result:

BookID Title

B001 Microsoft Access 2007

B002 C programming language for beginners

B003 C++ programming from the ground up

-Retrieve data from all fields:
SELECT *
FROM table-name;
Example2:
SELECT *
FROM TblBook;

Result:

BookID PublisherID Title ISBN

B001 P001 Microsoft Access 2007 123-456-435678-9

B002 P002 C programming language for beginners 234-456-9876523-8

B003 P003 C++ programming from the ground up 345-451-890087-2

Posted comments

Patrick:

Good explanations. Thank you :)

03-22-2013

Dara:

Global and local variables declaration example:
http://www.worldbestlearningcenter.com/tips/Global-variables-in-vba.htm

02-23-2013

ann:

thanks for sharing your knowledge it helps me a lot.

02-11-2013

Tamilan:

Pls post some examples for declaring and calling variables (local and global)

02-09-2013

M.somjate:

Thanks for example color code.

02-08-2013

G G Shah:

Heartly Thanks.God bless you.

01-18-2013

sek sam:

I like this website very much.
It has a lot of helpful helpful materials to learn excel programming.

01-01-2013

limocky:

useful ms access examples...
good web site to to learn access from scratch.

01-01-2013

bakery:

Thank for useful VBA example code...

12-27-2012

prasat:

Thank u for useful website..

11-03-2012

zal:

Thank for really helpful posts

10-28-2012

brasha:

Useful VBA examples for Excel. I really need them.

10-25-2012

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