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soorajtnpki
Posting Yak Master
231 Posts |
Posted - 2008-04-07 : 00:23:59
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Is there any difference between left join and left outer join in sql server 2000?please reply with example if any?Thanks in advance |
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snSQL
Master Smack Fu Yak Hacker
1837 Posts |
Posted - 2008-04-07 : 00:47:44
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No difference, the keyword OUTER is optional. |
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soorajtnpki
Posting Yak Master
231 Posts |
Posted - 2008-04-07 : 01:36:24
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then why there is left inner and left outer joins in sql server ???? |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2008-04-07 : 01:42:08
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There is no LEFT INNER JOIN. INNER JOIN do not have any sides because they only return rows from both tables that match the ON clause. |
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soorajtnpki
Posting Yak Master
231 Posts |
Posted - 2008-04-07 : 02:02:40
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But visakh there is left join,then wats the use of left join over left outer join,r they the same?? |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2008-04-07 : 02:31:49
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Yup. They are the same. OUTER is an optional word. LEFT JOIN or LEFT OUTER JOIN is one and the same thing. |
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soorajtnpki
Posting Yak Master
231 Posts |
Posted - 2008-04-07 : 02:46:00
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ok visakh, but i heard that there is difference between these two in oracle.And I think as part of structured query language conventions we have these key words in sql server.Thanks all |
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eyechart
Master Smack Fu Yak Hacker
3575 Posts |
Posted - 2008-04-07 : 10:02:43
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quote: Originally posted by soorajtnpki ok visakh, but i heard that there is difference between these two in oracle.And I think as part of structured query language conventions we have these key words in sql server.Thanks all
the OUTER keyword is optional in Oracle as well, so there is no difference between LEFT OUTER JOIN and LEFT JOIN when using Oracle.-ec |
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soorajtnpki
Posting Yak Master
231 Posts |
Posted - 2008-04-08 : 00:29:30
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ok then why there is left join and left outer join in sql ???? pls clarify if u know..thanks |
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jezemine
Master Smack Fu Yak Hacker
2886 Posts |
Posted - 2008-04-08 : 01:08:54
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there is no good reason. the OUTER keyword is optional and that's that. just accept it and move on.  elsasoft.org |
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mudassir_k
Starting Member
1 Post |
Posted - 2008-06-03 : 15:42:29
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In SQL Server 2000 we have three types of joins1. Inner join2. Outer Join3. Cross Join1. Inner Join: Inner Join is the default type of join, it will producesses the result set, which contains matched rows only.syntax: select * from table1<innerjoin>table22. Outer Join: Outer join produces the results, which contains matched rows and unmatched rows.here we have three types of joins,1.Left Outer Join 2.Right Outer Join 3.Full Outer JoinLeft Outer Join: Left Outer Join producesses the results, which contains all the rows from Left table and matched rows from Right Table.syntax: select * from table1<leftouterjoin>table2Right Outer Join: Right Outer Join producesses the resultset, which contains all the rows from right table and matched rows from left table.syntax:select * from table1<right outer join>table2Full Outer Join: Full Outer Join producesses the resultset, which contains all the rows from left table and all the rows from right table.syntax:select * from table1<fullouterjoin>table23.Cross Join: A join without having any condition is known as Cross Join, in cross join every row in first table is joins with every row in second table.syntax: select * from table1<cross join>table2Self Join: A join joins withitself is called self joinworking with self joins we use Alias tables. |
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Vinnie881
Master Smack Fu Yak Hacker
1231 Posts |
Posted - 2008-06-03 : 21:19:47
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So what is the differance between a left join and left outer join j/kDid this post get repetitive? |
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Tharindu
Starting Member
5 Posts |
Posted - 2008-07-16 : 01:38:54
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quote: Originally posted by soorajtnpki Is there any difference between left join and left outer join in sql server 2000?please reply with example if any?Thanks in advance
Yes I’m also can’t find out is there any differences and I hope there has any performance issue but still can’t find out solid answer. Yes we can ignore “Inner” (Ex: join and inner join) and “outer” (Ex: left join and left outer join) or we can use it nothing different both are gives same answers.Tharindu Dhaneenjahttp://spaces.msn.com/dhaneenjahttp://spaces.msn.com/dhaneenja |
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elancaster
A very urgent SQL Yakette
1208 Posts |
Posted - 2008-07-16 : 03:36:35
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quote: Originally posted by Tharindu
quote: Originally posted by soorajtnpki Is there any difference between left join and left outer join in sql server 2000?please reply with example if any?Thanks in advance
Yes I’m also can’t find out is there any differences and I hope there has any performance issue but still can’t find out solid answer. Yes we can ignore “Inner” (Ex: join and inner join) and “outer” (Ex: left join and left outer join) or we can use it nothing different both are gives same answers.Tharindu Dhaneenjahttp://spaces.msn.com/dhaneenjahttp://spaces.msn.com/dhaneenja
...after reading the above answers, are you seriously asking what the difference is? quote: snSQL Posted - 04/07/2008 : 00:47:44No difference, the keyword OUTER is optional.
quote: visakh16 Posted - 04/07/2008 : 02:31:49They are the same. OUTER is an optional word. LEFT JOIN or LEFT OUTER JOIN is one and the same thing.
quote: eyechart Posted - 04/07/2008 : 10:02:43the OUTER keyword is optional in Oracle as well, so there is no difference between LEFT OUTER JOIN and LEFT JOIN when using Oracle.
quote: jezemine Posted - 04/08/2008 : 01:08:54 there is no good reason. the OUTER keyword is optional and that's that. just accept it and move on.
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