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Gopi S

Posted Monday, March 21, 2011 8:12 PM

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Comments posted to this topic are about the item T-SQL

Post #1081713

UMG Developer

Posted Monday, March 21, 2011 8:14 PM

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Interesting question, thanks, and a good reason you should always specify the data type for hardcoded items when using a Table Value Constructor or UNION since data type precedence comes into play.

Here is a link to the Table Value Constructor in BOL that mentions the data type precedence: http://msdn.microsoft.com/en-us/library/dd776382.aspx, and here is a link for data type precedence: http://msdn.microsoft.com/en-us/library/ms190309.aspx

Edited to correct the information. (thanks Bradley!)

Post #1081714

pksutha

Posted Tuesday, March 22, 2011 12:01 AM

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No. My answer is first time BEGH, second time BEGH and Third time BEGH. Bcoz these two variables are varchar only. so if u pass the interger value without single quote it will accept.

First time :

insert into #test values
('1','A'),
('','B')
insert into #test values
(2,'D'),
('','E')
insert into #test values
('','G'),
('','H')
go
-- First select statement
select * from #test where c1 = ' '
delete #test
answer :
B
E
G
H

Second time:
insert into #test values
('1','A'),
('','B')
insert into #test values
('2','D'),
('','E')
insert into #test values
('','G'),
('','H')
go
-- Second select statement
select * from #test where c1 = ' '
delete #test

Third Time:

insert into #test values
(1,'A'),
('','B')
insert into #test values
(2,'D'),
('','E')
insert into #test values
('','G'),
('','H')
go
-- Third select statement
select * from #test where c1 = ' '

answer :
B
E
G
H

Note: So all three times the value comes same value only in SQLSERVER 2005

Post #1081755

Gopi S

Posted Tuesday, March 22, 2011 12:15 AM

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The question is " What is the output of the select statement from the below code
executed in sql server 10.0.1600 and with default settings " and not in SQL Server 2005 Smile

And are you sure this below code executed successfully in 2005 ?
insert into #test values
('1','A'),
('','B')

Thanks

Post #1081760

tejaswini.patil

Posted Tuesday, March 22, 2011 2:52 AM

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Gopinath Srirangan (3/22/2011)

The question is " What is the output of the select statement from the below code
executed in sql server 10.0.1600 and with default settings " and not in SQL Server 2005 Smile

And are you sure this below code executed successfully in 2005 ?
insert into #test values
('1','A'),
('','B')

Thanks

The Insert statement would definitely not work in 2005. The feature of inserting multiple rows using VALUE caluse is introduced in 2008.

Post #1081802

tejaswini.patil

Posted Tuesday, March 22, 2011 2:53 AM

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Interesting question.

Good learning for me.

Thanks.

Post #1081803

tejaswini.patil

Posted Tuesday, March 22, 2011 2:56 AM

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tejaswini.patil (3/22/2011)

Gopinath Srirangan (3/22/2011)

The question is " What is the output of the select statement from the below code
executed in sql server 10.0.1600 and with default settings " and not in SQL Server 2005 Smile

And are you sure this below code executed successfully in 2005 ?
insert into #test values
('1','A'),
('','B')

Thanks

The Insert statement would definitely not work in 2005. The feature of inserting multiple rows using VALUE caluse is introduced in 2008.

If the INSERT statement syntax is changed according to SQL Server 2005 and executed the script in SQL Server 2005 then the output is B, E, G, H for all the three select statements.

Post #1081808

paul s-306273

Posted Tuesday, March 22, 2011 3:00 AM

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Too much thinking for one point...

Post #1081810

tejaswini.patil

Posted Tuesday, March 22, 2011 3:04 AM

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paul s-306273 (3/22/2011)

Too much thinking for one point...

"Point" does not matter however question matters.

I have found the question interesting and am sure there will be good learning for me.

Smile

Post #1081811

cengland0

Posted Tuesday, March 22, 2011 3:21 AM

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Gopinath Srirangan (3/22/2011)

And are you sure this below code executed successfully in 2005 ?
insert into #test values
('1','A'),
('','B')
Thanks

It will not work in 2005. That's the server I use daily and I wish this syntax would work because it could simplify my job significantly when inserting a bunch of values manually.

Post #1081824

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