yiguolei commented on code in PR #22144:
URL: https://github.com/apache/doris/pull/22144#discussion_r1273398897


##########
fe/fe-core/src/main/java/org/apache/doris/qe/cache/SqlCache.java:
##########
@@ -35,13 +35,21 @@ public SqlCache(TUniqueId queryId, SelectStmt selectStmt) {
         super(queryId, selectStmt);
     }
 
+    public SqlCache(TUniqueId queryId) {
+        super(queryId);
+    }
+
     public void setCacheInfo(CacheAnalyzer.CacheTable latestTable, String 
allViewExpandStmtListStr) {
         this.latestTable = latestTable;
         this.allViewExpandStmtListStr = allViewExpandStmtListStr;
     }
 
     public String getSqlWithViewStmt() {
-        return selectStmt.toSql() + "|" + allViewExpandStmtListStr;
+        if (selectStmt != null)  {
+            return selectStmt.toSql() + "|" + allViewExpandStmtListStr;

Review Comment:
   what about fold constant? For example, select * from tablet where a = 
cur_date(); although the 



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