diff options
Diffstat (limited to 'sql/catalyst')
| -rw-r--r-- | sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala index bd00ff22ba..7f4cc234dc 100644 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala @@ -126,10 +126,10 @@ class Analyzer(catalog: Catalog, } /* - * GROUP BY a, b, c, WITH ROLLUP + * GROUP BY a, b, c WITH ROLLUP * is equivalent to - * GROUP BY a, b, c GROUPING SETS ( (a, b, c), (a, b), (a), ( )). - * Group Count: N + 1 (N is the number of group expression) + * GROUP BY a, b, c GROUPING SETS ( (a, b, c), (a, b), (a), ( ) ). + * Group Count: N + 1 (N is the number of group expressions) * * We need to get all of its subsets for the rule described above, the subset is * represented as the bit masks. @@ -139,12 +139,12 @@ class Analyzer(catalog: Catalog, } /* - * GROUP BY a, b, c, WITH CUBE + * GROUP BY a, b, c WITH CUBE * is equivalent to * GROUP BY a, b, c GROUPING SETS ( (a, b, c), (a, b), (b, c), (a, c), (a), (b), (c), ( ) ). - * Group Count: 2^N (N is the number of group expression) + * Group Count: 2 ^ N (N is the number of group expressions) * - * We need to get all of its sub sets for a given GROUPBY expressions, the subset is + * We need to get all of its subsets for a given GROUPBY expression, the subsets are * represented as the bit masks. */ def bitmasks(c: Cube): Seq[Int] = { |