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support aliasing

This commit is contained in:
xvrl 2013-03-02 14:09:20 -08:00
parent f8a118dd98
commit 5d1af7d884
1 changed files with 7 additions and 1 deletions
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8
client/src/main/antlr4/com/metamx/druid/sql/antlr4/DruidSQL.g4
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@ -148,7 +148,13 @@ datasource
; ;
aliasedExpression returns [PostAggregator p] aliasedExpression returns [PostAggregator p]
: expression ( AS^ name=IDENT )? { $p = $expression.p; } : expression ( AS^ name=IDENT )? {
if($name != null) {
postAggregators.add($expression.p);
$p = new FieldAccessPostAggregator($name.text, $expression.p.getName());
}
else $p = $expression.p;
}
; ;
expression returns [PostAggregator p] expression returns [PostAggregator p]