From 94e13e354e59275062f9d792d636dcc16ee162af Mon Sep 17 00:00:00 2001
From: Zhang Yonglun <zhangyonglun@apache.org>
Date: Wed, 3 Jun 2020 21:33:05 +0800
Subject: [PATCH] postgres column name null (#5906)

---
 .../proxy/backend/response/query/QueryHeaderBuilder.java        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/response/query/QueryHeaderBuilder.java b/shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/response/query/QueryHeaderBuilder.java
index 1efd28bc09..795c9e7cf6 100644
--- a/shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/response/query/QueryHeaderBuilder.java
+++ b/shardingsphere-proxy/shardingsphere-proxy-backend/src/main/java/org/apache/shardingsphere/proxy/backend/response/query/QueryHeaderBuilder.java
@@ -74,7 +74,7 @@ public final class QueryHeaderBuilder {
         if (null != actualTableName && dataNodeRoutedRule.isPresent()) {
             tableName = dataNodeRoutedRule.get().findLogicTableByActualTable(actualTableName).orElse("");
             TableMetaData tableMetaData = schema.getSchema().getMetaData().getSchema().getConfiguredSchemaMetaData().get(tableName);
-            primaryKey = null != tableMetaData && tableMetaData.getColumns().get(resultSetMetaData.getColumnName(columnIndex).toLowerCase()).isPrimaryKey();
+            primaryKey = null != tableMetaData && tableMetaData.getColumns().get(columnName.toLowerCase()).isPrimaryKey();
         } else {
             tableName = actualTableName;
             primaryKey = false;
-- 
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