From 9b1cdd3230fbc506b28e4b69e20b95bed8e6c90d Mon Sep 17 00:00:00 2001
From: starocean999 <40539150+starocean999@users.noreply.github.com>
Date: Tue, 17 Oct 2023 19:14:13 +0800
Subject: [PATCH] [fix](planner) mark join slot should always be nullable
 (#25433)

---
 .../src/main/java/org/apache/doris/analysis/Analyzer.java    | 5 ++++-
 .../main/java/org/apache/doris/analysis/StmtRewriter.java    | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java
index e3e8196379..e93d622df5 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/Analyzer.java
@@ -994,7 +994,10 @@ public class Analyzer {
                                                 newTblName == null ? "table list" : newTblName.toString());
         }
 
-        Column col = d.getTable() == null ? new Column(colName, ScalarType.BOOLEAN) : d.getTable().getColumn(colName);
+        Column col = (d.getTable() == null)
+                ? new Column(colName, ScalarType.BOOLEAN,
+                        globalState.markTuples.get(d.getAlias()) != null)
+                : d.getTable().getColumn(colName);
         if (col == null) {
             ErrorReport.reportAnalysisException(ErrorCode.ERR_BAD_FIELD_ERROR, colName,
                                                 newTblName == null ? d.getTable().getName() : newTblName.toString());
diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/StmtRewriter.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/StmtRewriter.java
index 6e3ec2b50c..d80328683d 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/StmtRewriter.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/StmtRewriter.java
@@ -529,7 +529,7 @@ public class StmtRewriter {
             String slotName = stmt.getColumnAliasGenerator().getNextAlias();
             markSlot.setType(ScalarType.BOOLEAN);
             markSlot.setIsMaterialized(true);
-            markSlot.setIsNullable(false);
+            markSlot.setIsNullable(true);
             markSlot.setColumn(new Column(slotName, ScalarType.BOOLEAN));
             SlotRef markRef = new SlotRef(markSlot);
             markRef.setTblName(new TableName(null, null, markTuple.getAlias()));