diff --git a/src/main/java/com/alibaba/druid/sql/ast/statement/SQLTableSourceImpl.java b/src/main/java/com/alibaba/druid/sql/ast/statement/SQLTableSourceImpl.java
index bedc7ea61b..e617ae2d1e 100644
--- a/src/main/java/com/alibaba/druid/sql/ast/statement/SQLTableSourceImpl.java
+++ b/src/main/java/com/alibaba/druid/sql/ast/statement/SQLTableSourceImpl.java
@@ -129,7 +129,7 @@ public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTab
             return null;
         }
 
-        long hash = FnvHash.hashCode64(alias);
+        long hash = FnvHash.hashCode64(columnName);
         return findColumn(hash);
     }
 
@@ -146,7 +146,7 @@ public abstract class SQLTableSourceImpl extends SQLObjectImpl implements SQLTab
             return null;
         }
 
-        long hash = FnvHash.hashCode64(alias);
+        long hash = FnvHash.hashCode64(columnName);
         return findTableSourceWithColumn(hash, columnName, 0);
     }