Fix ConditionInSelect with 1-element row on the left side

h2/src/main/org/h2/expression/condition/ConditionInSelect.java

@@ -5,6 +5,7 @@
  */
 package org.h2.expression.condition;
 
+import org.h2.api.ErrorCode;
 import org.h2.command.dml.Query;
 import org.h2.engine.Database;
 import org.h2.engine.Session;
@@ -12,6 +13,7 @@ import org.h2.expression.Expression;
 import org.h2.expression.ExpressionColumn;
 import org.h2.expression.ExpressionVisitor;
 import org.h2.index.IndexCondition;
+import org.h2.message.DbException;
 import org.h2.result.LocalResult;
 import org.h2.result.ResultInterface;
 import org.h2.table.ColumnResolver;
@@ -74,6 +76,13 @@ public class ConditionInSelect extends Condition {
             if (dataType == Value.NULL) {
                 return ValueBoolean.FALSE;
             }
+            if (l.getType() == Value.ROW) {
+                Value[] leftList = ((ValueRow) l).getList();
+                if (leftList.length != 1) {
+                    throw DbException.get(ErrorCode.COLUMN_COUNT_DOES_NOT_MATCH);
+                }
+                l = leftList[0];
+            }
             l = l.convertTo(dataType, database.getMode());
             if (rows.containsDistinct(new Value[] { l })) {
                 return ValueBoolean.TRUE;

h2/src/test/org/h2/test/scripts/datatypes/array.sql

@@ -72,8 +72,17 @@ CREATE TABLE TEST(A ARRAY);
 INSERT INTO TEST VALUES (ARRAY[1, NULL]), (ARRAY[1, 2]);
 > update count: 2
 
+SELECT ARRAY[1, 2] IN (SELECT A FROM TEST);
+>> TRUE
+
+SELECT ROW (ARRAY[1, 2]) IN (SELECT A FROM TEST);
+>> TRUE
+
 SELECT ARRAY[1, NULL] IN (SELECT A FROM TEST);
 >> null
 
+SELECT ROW (ARRAY[1, NULL]) IN (SELECT A FROM TEST);
+>> null
+
 DROP TABLE TEST;
 > ok