refactor: add ut casese for schemaless

source/client/src/clientSml.c

@@ -1179,7 +1179,7 @@ static int32_t smlParseCols(const char* data, int32_t len, SArray *cols, bool is
 //}
 
 static bool smlUpdateMeta(SHashObj *metaHash, SArray *metaArray, SArray *cols, SSmlMsgBuf *msg){
-  for (int i = 1; i < taosArrayGetSize(cols); ++i) {  //jump timestamp
+  for (int i = 0; i < taosArrayGetSize(cols); ++i) {  //jump timestamp
     SSmlKv *kv = (SSmlKv *)taosArrayGetP(cols, i);
 
     int16_t *index = (int16_t *)taosHashGet(metaHash, kv->key, kv->keyLen);

source/libs/parser/src/parInsert.c

@@ -758,7 +758,7 @@ static int32_t KvRowAppend(SMsgBuf* pMsgBuf, const void* value, int32_t len, voi
     int32_t output = 0;
     if (!taosMbsToUcs4(value, len, (TdUcs4*)varDataVal(pa->buf), pa->schema->bytes - VARSTR_HEADER_SIZE, &output)) {
       char buf[512] = {0};
-      snprintf(buf, tListLen(buf), "%s", strerror(errno));
+      snprintf(buf, tListLen(buf), " taosMbsToUcs4 error:%s", strerror(errno));
       return buildSyntaxErrMsg(pMsgBuf, buf, value);
     }