Add tests for hash/sort based aggregation paths

Author: hvanhovell

sql/core/src/test/resources/sql-tests/inputs/group-by.sql

@@ -7,5 +7,11 @@ select int_col, count(*) from myview group by int_col;
 -- group by should produce a single row.
 select 'foo', count(*) from myview group by 1;
 
--- group-by should not produce any rows.
+-- group-by should not produce any rows (whole stage code generation).
 select 'foo' from myview where int_col == 0 group by 1;
+
+-- group-by should not produce any rows (hash aggregate).
+select 'foo', approx_count_distinct(int_col) from myview where int_col == 0 group by 1;
+
+-- group-by should not produce any rows (sort aggregate).
+select 'foo', max(struct(int_col)) from myview where int_col == 0 group by 1;

sql/core/src/test/resources/sql-tests/results/group-by.sql.out

@@ -1,5 +1,5 @@
 -- Automatically generated by SQLQueryTestSuite
--- Number of queries: 4
+-- Number of queries: 6
 
 
 -- !query 0
@@ -33,3 +33,19 @@ select 'foo' from myview where int_col == 0 group by 1
 struct<foo:string>
 -- !query 3 output
 
+
+
+-- !query 4
+select 'foo', approx_count_distinct(int_col) from myview where int_col == 0 group by 1
+-- !query 4 schema
+struct<foo:string,approx_count_distinct(int_col):bigint>
+-- !query 4 output
+
+
+
+-- !query 5
+select 'foo', max(struct(int_col)) from myview where int_col == 0 group by 1
+-- !query 5 schema
+struct<foo:string,max(struct(int_col)):struct<int_col:int>>
+-- !query 5 output
+