[TD-6645/enhance]: Add default type convertion for numeric values for

JSON numbers.
Interger number -> BIGINT (contains only digits and '+' '-')
Floating number -> DOUBLE (including decimal point format or scientific
notation format)

src/client/inc/tscParseLine.h

@@ -54,6 +54,9 @@ typedef struct {
 
 int tscSmlInsert(TAOS* taos, TAOS_SML_DATA_POINT* points, int numPoint, SSmlLinesInfo* info);
 bool checkDuplicateKey(char *key, SHashObj *pHash, SSmlLinesInfo* info);
+bool isValidInteger(char *str);
+bool isValidFloat(char *str);
+
 int32_t isValidChildTableName(const char *pTbName, int16_t len);
 
 bool convertSmlValueType(TAOS_SML_KV *pVal, char *value,

src/client/src/tscParseLineProtocol.c

@@ -1137,7 +1137,7 @@ static void escapeSpecialCharacter(uint8_t field, const char **pos) {
   *pos = cur;
 }
 
-static bool isValidInteger(char *str) {
+bool isValidInteger(char *str) {
   char *c = str;
   if (*c != '+' && *c != '-' && !isdigit(*c)) {
     return false;
@@ -1152,7 +1152,7 @@ static bool isValidInteger(char *str) {
   return true;
 }
 
-static bool isValidFloat(char *str) {
+bool isValidFloat(char *str) {
   char *c = str;
   uint8_t has_dot, has_exp, has_sign;
   has_dot = 0;

src/client/src/tscParseOpenTSDB.c

@@ -741,11 +741,20 @@ int32_t parseValueFromJSON(cJSON *root, TAOS_SML_KV *pVal, SSmlLinesInfo* info)
       break;
     }
     case cJSON_Number: {
-      //convert default JSON Number type to float
-      pVal->type = TSDB_DATA_TYPE_FLOAT;
-      pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
-      pVal->value = tcalloc(pVal->length, 1);
-      *(float *)(pVal->value) = (float)(root->valuedouble);
+      //convert default JSON Number type to BIGINT/DOUBLE
+      if (isValidInteger(root->numberstring)) {
+        pVal->type = TSDB_DATA_TYPE_BIGINT;
+        pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+        pVal->value = tcalloc(pVal->length, 1);
+        *(int64_t *)(pVal->value) = (int64_t)(root->valuedouble);
+      } else if (isValidFloat(root->numberstring)) {
+        pVal->type = TSDB_DATA_TYPE_DOUBLE;
+        pVal->length = (int16_t)tDataTypes[pVal->type].bytes;
+        pVal->value = tcalloc(pVal->length, 1);
+        *(double *)(pVal->value) = (double)(root->valuedouble);
+      } else {
+        return TSDB_CODE_TSC_INVALID_JSON_TYPE;
+      }
       break;
     }
     case cJSON_String: {