SQL tutorial-Field calculations

Field calculations

SQL allows you to calculate the fields of a table. The basic arithmetic operations to calculate the fields are addition(+), subtraction(-), multiplication(*), and division(/).
Example: Calculate the sub totals of each product in the TblProduct below:

TblProduct table:

ProID	ProName	UnitPrice	Qty	CatID
P001	Angkor	20$	10	Cat001
P002	Anchor	19$	15	Cat002
P003	ABC	50$	8	Cat003

SELECT ProID,UnitPrice*Qty AS Subtotal

FROM TblProduct;

Result:

ProID	Subtotal
P001	200
P002	285
P003	400

Note: We use the AS keyword to assign the new name(Subtotal) to the new field that derive from the calculation of other fields. This is called aliasing the field name.

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:

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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:

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01-18-2013

sek sam:

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01-01-2013

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01-01-2013

bakery:

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12-27-2012

prasat:

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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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