From 93569ed435a5656c5f72907b951bec1d36b4be32 Mon Sep 17 00:00:00 2001
From: jcsherin <jacob@protoship.io>
Date: Thu, 17 Oct 2024 13:11:11 +0530
Subject: [PATCH] Revert "Disable failing sqllogic tests for handling NULL
 input"

This reverts commit 270a2030637012d549c001e973a0a1bb6b3d4dd0.
---
 datafusion/sqllogictest/test_files/window.slt | 87 +++++++++----------
 1 file changed, 43 insertions(+), 44 deletions(-)

diff --git a/datafusion/sqllogictest/test_files/window.slt b/datafusion/sqllogictest/test_files/window.slt
index 17723e606270..9ecd6f8b445b 100644
--- a/datafusion/sqllogictest/test_files/window.slt
+++ b/datafusion/sqllogictest/test_files/window.slt
@@ -4945,49 +4945,48 @@ DROP TABLE t;
 
 ## test handle NULL of lead
 
-# TODO: Port this bug fix: https://github.com/apache/datafusion/pull/12811
-# statement ok
-# create table t1(v1 int);
-#
-# statement ok
-# insert into t1 values (1);
-#
-# query B
-# SELECT LEAD(NULL, 0, false) OVER () FROM t1;
-# ----
-# NULL
-#
-# query B
-# SELECT LAG(NULL, 0, false) OVER () FROM t1;
-# ----
-# NULL
-#
-# query B
-# SELECT LEAD(NULL, 1, false) OVER () FROM t1;
-# ----
-# false
-#
-# query B
-# SELECT LAG(NULL, 1, false) OVER () FROM t1;
-# ----
-# false
-#
-# statement ok
-# insert into t1 values (2);
-#
-# query B
-# SELECT LEAD(NULL, 1, false) OVER () FROM t1;
-# ----
-# NULL
-# false
-#
-# query B
-# SELECT LAG(NULL, 1, false) OVER () FROM t1;
-# ----
-# false
-# NULL
-#
-# statement ok
-# DROP TABLE t1;
+statement ok
+create table t1(v1 int);
+
+statement ok
+insert into t1 values (1);
+
+query B
+SELECT LEAD(NULL, 0, false) OVER () FROM t1;
+----
+NULL
+
+query B
+SELECT LAG(NULL, 0, false) OVER () FROM t1;
+----
+NULL
+
+query B
+SELECT LEAD(NULL, 1, false) OVER () FROM t1;
+----
+false
+
+query B
+SELECT LAG(NULL, 1, false) OVER () FROM t1;
+----
+false
+
+statement ok
+insert into t1 values (2);
+
+query B
+SELECT LEAD(NULL, 1, false) OVER () FROM t1;
+----
+NULL
+false
+
+query B
+SELECT LAG(NULL, 1, false) OVER () FROM t1;
+----
+false
+NULL
+
+statement ok
+DROP TABLE t1;
 
 ## end test handle NULL of lead
\ No newline at end of file