feat: add tail and unique fun

tests/army/community/query/query_basic.py

@@ -50,9 +50,24 @@ class TDTestCase(TBase):
     def doQuery(self):
         tdLog.info(f"do query.")
         
-        # top bottom
+        # __group_key
-        sql = f"select top(uti, 5) from {self.stb} "
+        sql = f"select count(*),_group_key(uti),uti from {self.stb} partition by uti;"
         tdSql.execute(sql)
+        tdSql.checkRows(251)
+
+        sql = f"select count(*),_group_key(usi) from {self.stb} group by usi;"
+        tdSql.execute(sql)
+        tdSql.checkRows(997)
+
+        # tail
+        sql1 = "select ts,ui from d0 order by ts desc limit 5 offset 2;"
+        sql2 = "select ts,tail(ui,5,2) from d0;"
+        self.checkSameResult(sql1, sql2)
+
+        # uninqe
+        sql1 = "select distinct uti from d0 order by uti;"
+        sql2 = "select UNIQUE(uti) from d0 order by uti asc;"
+        self.checkSameResult(sql1, sql2)
 
 
     # run

tests/army/frame/caseBase.py

@@ -16,6 +16,7 @@ import os
 import time
 import datetime
 import random
+import copy
 
 from frame.log import *
 from frame.sql import *
@@ -183,6 +184,46 @@ class TBase:
         sql = f"select {col} from {self.stb} order by _c0 asc limit 1"
         tdSql.checkFirstValue(sql, expect)
 
+
+    # check sql1 is same result with sql2
+    def checkSameResult(self, sql1, sql2):
+        tdLog.info(f"sql1={sql1}")
+        tdLog.info(f"sql2={sql2}")
+        tdLog.info("compare sql1 same with sql2 ...")
+
+        # sql
+        rows1 = tdSql.query(sql1,queryTimes=2)
+        res1 = copy.deepcopy(tdSql.queryResult)
+
+        tdSql.query(sql2,queryTimes=2)
+        res2 = tdSql.queryResult
+
+        rowlen1 = len(res1)
+        rowlen2 = len(res2)
+        errCnt = 0
+
+        if rowlen1 != rowlen2:
+            tdLog.exit(f"both row count not equal. rowlen1={rowlen1} rowlen2={rowlen2} ")
+            return False
+        
+        for i in range(rowlen1):
+            row1 = res1[i]
+            row2 = res2[i]
+            collen1 = len(row1)
+            collen2 = len(row2)
+            if collen1 != collen2:
+                tdLog.exit(f"both col count not equal. collen1={collen1} collen2={collen2}")
+                return False
+            for j in range(collen1):
+                if row1[j] != row2[j]:
+                    tdLog.info(f"error both column value not equal. row={i} col={j} col1={row1[j]} col2={row2[j]} .")
+                    errCnt += 1
+
+        if errCnt > 0:
+            tdLog.exit(f"sql2 column value different with sql1. different count ={errCnt} ")
+
+        tdLog.info("sql1 same result with sql2.")
+
 #
 #   get db information
 #