From 53d77c60498efafd26fd1e0231be3d137ea66e27 Mon Sep 17 00:00:00 2001
From: factosea <285808407@qq.com>
Date: Fri, 7 Feb 2025 11:12:48 +0800
Subject: [PATCH] fix: cast double

---
 include/common/ttypes.h           | 10 +++++-----
 tests/army/query/function/cast.py | 13 +++++++++++++
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/include/common/ttypes.h b/include/common/ttypes.h
index c50ce7ba73..675f774566 100644
--- a/include/common/ttypes.h
+++ b/include/common/ttypes.h
@@ -239,21 +239,21 @@ typedef struct {
         snprintf(_output, (int32_t)(_outputBytes), "%" PRIu64, *(uint64_t *)(_input)); \
         break;                                                                         \
       case TSDB_DATA_TYPE_FLOAT: {                                                     \
-        int32_t n = snprintf(_output, (int32_t)(_outputBytes), "%f", *(float *)(_input));     \
+        int32_t n = snprintf(_output, (int32_t)(_outputBytes), "%.7f", *(float *)(_input));     \
         if (n >= (_outputBytes)) {                                                     \
           n = snprintf(_output, (int32_t)(_outputBytes), "%.7e", *(float *)(_input));  \
           if (n >= (_outputBytes)) {                                                   \
-            snprintf(_output, (int32_t)(_outputBytes), "%f", *(float *)(_input));      \
+            snprintf(_output, (int32_t)(_outputBytes), "%e", *(float *)(_input));      \
           }                                                                            \
         }                                                                              \
         break;                                                                         \
       }                                                                                \
       case TSDB_DATA_TYPE_DOUBLE: {                                                    \
-        int32_t n = snprintf(_output, (int32_t)(_outputBytes), "%f", *(double *)(_input));   \
+        int32_t n = snprintf(_output, (int32_t)(_outputBytes), "%.15f", *(double *)(_input));   \
         if (n >= (_outputBytes)) {                                                     \
-          snprintf(_output, (int32_t)(_outputBytes), "%.15e", *(double *)(_input));    \
+          n = snprintf(_output, (int32_t)(_outputBytes), "%.15e", *(double *)(_input));    \
           if (n >= (_outputBytes)) {                                                   \
-            snprintf(_output, (int32_t)(_outputBytes), "%f", *(double *)(_input));     \
+            snprintf(_output, (int32_t)(_outputBytes), "%e", *(double *)(_input));     \
           }                                                                            \
         }                                                                              \
         break;                                                                         \
diff --git a/tests/army/query/function/cast.py b/tests/army/query/function/cast.py
index af72f1de2c..2765250d93 100644
--- a/tests/army/query/function/cast.py
+++ b/tests/army/query/function/cast.py
@@ -540,6 +540,18 @@ class TDTestCase(TBase):
 
         tdSql.query(f"select cast({add1}+{test_str} as nchar(2)) re;")
         tdSql.checkData(0, 0, "12")
+        
+    def ts5972(self):
+        tdSql.execute("CREATE DATABASE IF NOT EXISTS ts5972;")
+        tdSql.execute("DROP TABLE IF EXISTS ts5972.t1;")
+        tdSql.execute("DROP TABLE IF EXISTS ts5972.t1;")
+        tdSql.execute("CREATE TABLE ts5972.t1(time TIMESTAMP, c0 DOUBLE);")
+        tdSql.execute("INSERT INTO ts5972.t1(time, c0) VALUES (1641024000000, 0.018518518518519), (1641024005000, 0.015151515151515), (1641024010000, 0.1234567891012345);")
+        tdSql.query("SELECT c0, CAST(c0 AS BINARY(50)) FROM ts5972.t1 WHERE CAST(c0 AS BINARY(50)) != c0;")
+        tdSql.checkRows(0)
+        tdSql.query("SELECT c0, CAST(c0 AS BINARY(50)) FROM ts5972.t1 WHERE CAST(c0 AS BINARY(50)) == c0;")
+        tdSql.checkRows(3)
+
 
     def cast_without_from(self):
         self.cast_from_int_to_other()
@@ -556,6 +568,7 @@ class TDTestCase(TBase):
     def run(self):
         # 'from table' case see system-test/2-query/cast.py
         self.cast_without_from()
+        self.ts5972()
 
         tdLog.success(f"{__file__} successfully executed")