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Is there any difference between left join and left outer join??????
please clarify me..
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Well, the answer is No. From the paper:
"Often you will hear the "left outer join" referred to as just the "left join". This is because the code that creates the join uses only the keyword "left join". The terms, however, are synonymous. "
/Linus
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Yes. A nice description, I think, is shown and described in the paper: http://www2.sas.com/proceedings/sugi30/249-30.pdf
It compares sql joins with data step merge operations, and shows the various merges and joins in terms of a venn diagram.
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Well, the answer is No. From the paper:
"Often you will hear the "left outer join" referred to as just the "left join". This is because the code that creates the join uses only the keyword "left join". The terms, however, are synonymous. "
/Linus
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It's documented (http://support.sas.com/documentation/cdl/en/sqlproc/63043/HTML/default/viewer.htm#p1bk7i6jqseje7n1li...😞
"Outer joins are inner joins that have been augmented with rows that did not match with any row from the other table in the join.".