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What is the difference between smalldatetime and datetime?

Posted on 2007-11-15
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Under SLQ Server 2005, what is the difference between smalldatetime and datetime?

If I just want to store a date (not interested in time of day) what is best?

Thanks!

Tom
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Question by:knowlton
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by:Aneesh Retnakaran
ID: 20290499
Hello knowlton,

Go for smalldatetime, which takes only 4 bytes while the datetime requires 8 bytes


Aneesh R
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by:Chris Mangus
Chris Mangus earned 100 total points
ID: 20290519
As to the difference, datetime will allow a greater range of dates to be stored whereas smalldatetime limits the range quite a bit.

Agree, smalldatetime takes less space to store.
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Aneesh Retnakaran earned 400 total points
ID: 20290520
datetime
Date and time data from January 1, 1753 through December 31, 9999, to an accuracy of one three-hundredth of a second (equivalent to 3.33 milliseconds or 0.00333 seconds). Values are rounded to increments of .000, .003, or .007 seconds, as shown in the table.

smalldatetime
Date and time data from January 1, 1900, through June 6, 2079, with accuracy to the minute. smalldatetime values with 29.998 seconds or lower are rounded down to the nearest minute; values with 29.999 seconds or higher are rounded up to the nearest minute.

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by:knowlton
ID: 20290653
Thanks!
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