Github user narahari92 commented on the pull request:
https://github.com/apache/metamodel/pull/20#issuecomment-98795407
Hi,
the reason for removing alias for onSelectItem(side Alias) is let's say we
have a query like below:
Query query = context.parse("Select a.col2 from A a INNER JOIN B b ON
a.col1 = b.col2 INNER JOIN C c ON a.col3 = c.col3");
If we parse it by replacing sideAlias of select Item then it gets
translated as below:
"SELECT a.col2 from A a INNER JOIN B b on a.col1 = b.col2 INNER JOIN C c ON
b.col3 = c.col3"
which is wrong and results in SQLException
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