Github user nsyca commented on a diff in the pull request:
https://github.com/apache/spark/pull/16760#discussion_r98794661
--- Diff:
sql/core/src/test/resources/sql-tests/results/subquery/exists-subquery/exists-orderby-limit.sql.out
---
@@ -0,0 +1,222 @@
+-- Automatically generated by SQLQueryTestSuite
+-- Number of queries: 12
+
+
+-- !query 0
+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)
+-- !query 0 schema
+struct<>
+-- !query 0 output
+
+
+
+-- !query 1
+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)
+-- !query 1 schema
+struct<>
+-- !query 1 output
+
+
+
+-- !query 2
+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)
+-- !query 2 schema
+struct<>
+-- !query 2 output
+
+
+
+-- !query 3
+SELECT *
+FROM emp
+WHERE EXISTS (SELECT dept.dept_id
+ FROM dept
+ WHERE emp.dept_id = dept.dept_id
+ ORDER BY state)
+ORDER BY hiredate
+-- !query 3 schema
+struct<id:int,emp_name:string,hiredate:date,salary:double,dept_id:int>
+-- !query 3 output
+300 emp 3 2002-01-01 300.0 20
+200 emp 2 2003-01-01 200.0 10
+100 emp 1 2005-01-01 100.0 10
+100 emp 1 2005-01-01 100.0 10
+400 emp 4 2005-01-01 400.0 30
+800 emp 8 2016-01-01 150.0 70
+
+
+-- !query 4
+SELECT id,
+ hiredate
+FROM emp
+WHERE EXISTS (SELECT dept.dept_id
+ FROM dept
+ WHERE emp.dept_id = dept.dept_id
+ ORDER BY state)
+ORDER BY hiredate DESC
+-- !query 4 schema
+struct<id:int,hiredate:date>
+-- !query 4 output
+800 2016-01-01
+100 2005-01-01
+100 2005-01-01
+400 2005-01-01
+200 2003-01-01
+300 2002-01-01
+
+
+-- !query 5
+SELECT *
+FROM emp
+WHERE NOT EXISTS (SELECT dept.dept_id
+ FROM dept
+ WHERE emp.dept_id = dept.dept_id
+ ORDER BY state)
+ORDER BY hiredate
+-- !query 5 schema
+struct<id:int,emp_name:string,hiredate:date,salary:double,dept_id:int>
+-- !query 5 output
+500 emp 5 2001-01-01 400.0 NULL
+600 emp 6 - no dept 2001-01-01 400.0 100
+700 emp 7 2010-01-01 400.0 100
+
+
+-- !query 6
+SELECT emp_name
+FROM emp
+WHERE NOT EXISTS (SELECT max(dept.dept_id) a
+ FROM dept
+ WHERE dept.dept_id = emp.dept_id
+ GROUP BY state
+ ORDER BY state)
+-- !query 6 schema
+struct<emp_name:string>
+-- !query 6 output
+emp 5
+emp 6 - no dept
+emp 7
+
+
+-- !query 7
+SELECT count(*)
+FROM emp
+WHERE NOT EXISTS (SELECT max(dept.dept_id) a
+ FROM dept
+ WHERE dept.dept_id = emp.dept_id
+ GROUP BY dept_id
+ ORDER BY dept_id)
+-- !query 7 schema
+struct<count(1):bigint>
+-- !query 7 output
+3
+
+
+-- !query 8
+SELECT *
+FROM emp
+WHERE EXISTS (SELECT dept.dept_name
+ FROM dept
+ WHERE dept.dept_id > 10
+ LIMIT 1)
+-- !query 8 schema
+struct<id:int,emp_name:string,hiredate:date,salary:double,dept_id:int>
+-- !query 8 output
+100 emp 1 2005-01-01 100.0 10
+100 emp 1 2005-01-01 100.0 10
+200 emp 2 2003-01-01 200.0 10
+300 emp 3 2002-01-01 300.0 20
+400 emp 4 2005-01-01 400.0 30
+500 emp 5 2001-01-01 400.0 NULL
+600 emp 6 - no dept 2001-01-01 400.0 100
+700 emp 7 2010-01-01 400.0 100
+800 emp 8 2016-01-01 150.0 70
+
+
+-- !query 9
+SELECT *
+FROM emp
+WHERE EXISTS (SELECT max(dept.dept_id)
+ FROM dept
+ GROUP BY state
+ LIMIT 1)
+-- !query 9 schema
+struct<id:int,emp_name:string,hiredate:date,salary:double,dept_id:int>
+-- !query 9 output
+100 emp 1 2005-01-01 100.0 10
+100 emp 1 2005-01-01 100.0 10
+200 emp 2 2003-01-01 200.0 10
+300 emp 3 2002-01-01 300.0 20
+400 emp 4 2005-01-01 400.0 30
+500 emp 5 2001-01-01 400.0 NULL
+600 emp 6 - no dept 2001-01-01 400.0 100
+700 emp 7 2010-01-01 400.0 100
+800 emp 8 2016-01-01 150.0 70
+
+
+-- !query 10
+SELECT *
+FROM emp
+WHERE NOT EXISTS (SELECT dept.dept_name
+ FROM dept
+ WHERE dept.dept_id > 100
+ LIMIT 1)
+-- !query 10 schema
+struct<id:int,emp_name:string,hiredate:date,salary:double,dept_id:int>
+-- !query 10 output
+100 emp 1 2005-01-01 100.0 10
+100 emp 1 2005-01-01 100.0 10
+200 emp 2 2003-01-01 200.0 10
+300 emp 3 2002-01-01 300.0 20
+400 emp 4 2005-01-01 400.0 30
+500 emp 5 2001-01-01 400.0 NULL
+600 emp 6 - no dept 2001-01-01 400.0 100
+700 emp 7 2010-01-01 400.0 100
+800 emp 8 2016-01-01 150.0 70
+
+
+-- !query 11
+SELECT *
+FROM emp
+WHERE NOT EXISTS (SELECT max(dept.dept_id)
+ FROM dept
+ WHERE dept.dept_id > 100
+ GROUP BY state
+ LIMIT 1)
+-- !query 11 schema
+struct<id:int,emp_name:string,hiredate:date,salary:double,dept_id:int>
+-- !query 11 output
+100 emp 1 2005-01-01 100.0 10
+100 emp 1 2005-01-01 100.0 10
+200 emp 2 2003-01-01 200.0 10
+300 emp 3 2002-01-01 300.0 20
+400 emp 4 2005-01-01 400.0 30
+500 emp 5 2001-01-01 400.0 NULL
+600 emp 6 - no dept 2001-01-01 400.0 100
+700 emp 7 2010-01-01 400.0 100
+800 emp 8 2016-01-01 150.0 70
--- End diff --
I have compared the result set matched with the result from DB2.
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