What is the difference?

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What is the difference?

Charmer

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Points: 14903
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September 26, 2012 at 6:05 am

#262206

Hi Friends,
I have a doubt regarding joining two tables, so i came here to get your suggestions...
What is the differece between the below two queries ? What difference we can see in the result ?
Could you guys give me valuable suggestions,please?
select * from table1 join table2 on table1.column = table2.column and table2.column > 100
select * from table1 join table2 on table1.column = table2.column where table2.column > 100
Thanks,
Charmer
September 26, 2012 at 6:17 am

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September 26, 2012 at 7:15 am

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GSquared SSC Guru Points: 260824 More actions · Answer 1

As written, they'll do the same thing. Check the execution plans, you'll see what they're doing.

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Charmer SSChampion Points: 14903 More actions · Answer 2

Charmer (9/26/2012)
Hi Friends,
I have a doubt regarding joining two tables, so i came here to get your suggestions...
What is the differece between the below two queries ? What difference we can see in the result ?
Could you guys give me valuable suggestions,please?
select * from table1 join table2 on table1.column = table2.column and table2.column > 100
select * from table1 join table2 on table1.column = table2.column where table2.column > 100

Thank you Stewart , That make sense to me...If you don't mind, Could you gimme an example queries ..?

Thanks,
Charmer

ChrisM@Work SSC Guru Points: 186127 More actions · Answer 3

Charmer (9/26/2012)
Charmer (9/26/2012)
Hi Friends,
I have a doubt regarding joining two tables, so i came here to get your suggestions...
What is the differece between the below two queries ? What difference we can see in the result ?
Could you guys give me valuable suggestions,please?
select * from table1 join table2 on table1.column = table2.column and table2.column > 100
select * from table1 join table2 on table1.column = table2.column where table2.column > 100
Thank you Stewart , That make sense to me...If you don't mind, Could you gimme an example queries ..?

select * from table1 left join table2 on table1.column = table2.column and table2.column > 100

select * from table1 left join table2 on table1.column = table2.column where table2.column > 100

^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

Charmer SSChampion Points: 14903 More actions · Answer 4

Thank you so much Stewart....This example is going to help me a lot...I made lot of mistakes in my T-SQL statements with this join with AND , join with WHERE...

I gotta change everything....You really helped me ....:-)

Thanks,
Charmer