From 73351917abc0250ac64d97f868bab892e26bb03c Mon Sep 17 00:00:00 2001
From: xy720 <22125576+xy720@users.noreply.github.com>
Date: Fri, 9 Sep 2022 11:17:50 +0800
Subject: [PATCH] [Enhancement](array-type) Add readable information in
 subquery for array type #12463

---
 .../src/main/java/org/apache/doris/analysis/Subquery.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fe/fe-core/src/main/java/org/apache/doris/analysis/Subquery.java b/fe/fe-core/src/main/java/org/apache/doris/analysis/Subquery.java
index c1d0d2dbf0..4246edb5e4 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/analysis/Subquery.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/analysis/Subquery.java
@@ -109,7 +109,9 @@ public class Subquery extends Expr {
         ArrayList<Expr> stmtResultExprs = stmt.getResultExprs();
         if (stmtResultExprs.size() == 1) {
             type = stmtResultExprs.get(0).getType();
-            Preconditions.checkState(!type.isComplexType());
+            if (type.isComplexType()) {
+                throw new AnalysisException("A subquery should not return Array/Map/Struct type: " + toSql());
+            }
         } else {
             type = createStructTypeFromExprList();
         }