Merge pull request #21576 from taosdata/fix/TD-24563

fix:do not modify source data in schemaless

source/client/src/clientSml.c

@@ -1553,17 +1553,8 @@ static int32_t smlParseLine(SSmlHandle *info, char *lines[], char *rawLine, char
       }
     }
 
-    char cTmp = 0;  // for print tmp if is raw
-    if (info->isRawLine) {
-      cTmp = tmp[len];
-      tmp[len] = '\0';
-    }
-
     uDebug("SML:0x%" PRIx64 " smlParseLine israw:%d, numLines:%d, protocol:%d, len:%d, sql:%s", info->id,
-           info->isRawLine, numLines, info->protocol, len, tmp);
-    if (info->isRawLine) {
-      tmp[len] = cTmp;
-    }
+           info->isRawLine, numLines, info->protocol, len, info->isRawLine ? "rawdata" : tmp);
 
     if (info->protocol == TSDB_SML_LINE_PROTOCOL) {
       if (info->dataFormat) {
@@ -1584,8 +1575,7 @@ static int32_t smlParseLine(SSmlHandle *info, char *lines[], char *rawLine, char
       code = TSDB_CODE_SML_INVALID_PROTOCOL_TYPE;
     }
     if (code != TSDB_CODE_SUCCESS) {
-      tmp[len] = '\0';
-      uError("SML:0x%" PRIx64 " smlParseLine failed. line %d : %s", info->id, i, tmp);
+      uError("SML:0x%" PRIx64 " smlParseLine failed. line %d : %s", info->id, i, info->isRawLine ? "rawdata" : tmp);
       return code;
     }
     if (info->reRun) {