[GitHub] [spark] tanelk commented on a change in pull request #34402: [SPARK-30220] Enable using Exists/In subqueries outside of the Filter node

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tanelk commented on a change in pull request #34402:
URL: https://github.com/apache/spark/pull/34402#discussion_r829967745



##########
File path: sql/core/src/test/resources/sql-tests/inputs/subquery/exists-subquery/exists-outside-filter.sql
##########
@@ -0,0 +1,133 @@
+-- Tests EXISTS subquery support where the subquery is used outside the WHERE clause.
+
+
+CREATE TEMPORARY VIEW EMP AS SELECT * FROM VALUES
+  (100, "emp 1", date "2005-01-01", 100.00D, 10),
+  (100, "emp 1", date "2005-01-01", 100.00D, 10),
+  (200, "emp 2", date "2003-01-01", 200.00D, 10),
+  (300, "emp 3", date "2002-01-01", 300.00D, 20),
+  (400, "emp 4", date "2005-01-01", 400.00D, 30),
+  (500, "emp 5", date "2001-01-01", 400.00D, NULL),
+  (600, "emp 6 - no dept", date "2001-01-01", 400.00D, 100),
+  (700, "emp 7", date "2010-01-01", 400.00D, 100),
+  (800, "emp 8", date "2016-01-01", 150.00D, 70)
+AS EMP(id, emp_name, hiredate, salary, dept_id);
+
+CREATE TEMPORARY VIEW DEPT AS SELECT * FROM VALUES
+  (10, "dept 1", "CA"),
+  (20, "dept 2", "NY"),
+  (30, "dept 3", "TX"),
+  (40, "dept 4 - unassigned", "OR"),
+  (50, "dept 5 - unassigned", "NJ"),
+  (70, "dept 7", "FL")
+AS DEPT(dept_id, dept_name, state);
+
+CREATE TEMPORARY VIEW BONUS AS SELECT * FROM VALUES
+  ("emp 1", 10.00D),
+  ("emp 1", 20.00D),
+  ("emp 2", 300.00D),
+  ("emp 2", 100.00D),
+  ("emp 3", 300.00D),
+  ("emp 4", 100.00D),
+  ("emp 5", 1000.00D),
+  ("emp 6 - no dept", 500.00D)
+AS BONUS(emp_name, bonus_amt);
+
+-- uncorrelated select exist
+-- TC.01.01
+SELECT
+  emp_name,
+  EXISTS (SELECT 1
+          FROM   dept
+          WHERE  dept.dept_id > 10
+            AND dept.dept_id < 30)
+FROM   emp;
+
+-- correlated select exist
+-- TC.01.02
+SELECT
+  emp_name,
+  EXISTS (SELECT 1
+          FROM   dept
+          WHERE  emp.dept_id = dept.dept_id)
+FROM   emp;
+
+-- uncorrelated exist in aggregate filter

Review comment:
       Added testcases




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