select * from table where 3 > 2 what will return this query?

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Hi,

select * from table where 3 > 2 what will return this query? anyone explain this query??

Posted 10-Dec-12 16:09pm

manuel_joseph

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Jim Jos · Answer 1 · 2012-12-10T16:19:00

Following the WHERE keyword is a logical expression, also known as a predicate.

The predicate evaluates to a SQL logical value -- true, false or unknown. The most basic predicate is a comparison:

color = 'Red'

This predicate returns:
true -- if the color column contains the string value -- 'Red',
false -- if the color column contains another string value (not 'Red'), or
unknown -- if the color column contains null.

In your query the predicate 3 > 2 is always true.. As no other condition is present the query will fetch all the rows from the table. Hope this explains...

Dee_Bee · Answer 2 · 2012-12-10T17:00:00

Solution 2

3 > 2 is always true. It will display all the rows when you execute. likewise 5 > 2 , 6 > 1 etc.
But if you try with 2 > 3, you will not get any results as it is always false.
As you mentioned only one conditional clause .

Thank you

Posted 10-Dec-12 17:00pm

Dee_Bee

Updated 10-Dec-12 17:15pm

v2

Prasad Guduri · Answer 3 · 2012-12-11T00:51:00

Solution 3

Where is used to filter the from all the data.
Here the condition 3>2 always true.It means condition is always true & no other conditions are there to filter.

*So, It works similar as Select * from TableName.

-- Returns All records --

Posted 11-Dec-12 0:51am

Prasad Guduri