diff --git a/src/client/src/tscParseLineProtocol.c b/src/client/src/tscParseLineProtocol.c
index a198a7b42a02dd65a036b1784fdb4b5b732fbaf1..9f86d780d35476fdcd1ab7be9ccb462dd81e7396 100644
--- a/src/client/src/tscParseLineProtocol.c
+++ b/src/client/src/tscParseLineProtocol.c
@@ -912,6 +912,12 @@ int32_t parseItemValue(SLPItem* item, LPItemKind kind) {
       item->value = malloc(item->length);
       char* endptr = NULL;
       *(int64_t*)(item->value) = strtoll(sv, &endptr, 10);
+    } else if (*last == 'u') {
+      item->type = TSDB_DATA_TYPE_UBIGINT;
+      item->length = (int16_t)tDataTypes[item->type].bytes;
+      item->value = malloc(item->length);
+      char* endptr = NULL;
+      *(uint64_t*)(item->value) = (uint64_t)strtoull(sv, &endptr, 10);
     } else if (*last == 'b') {
       item->type = TSDB_DATA_TYPE_TINYINT;
       item->length = (int16_t)tDataTypes[item->type].bytes;
@@ -989,6 +995,16 @@ int32_t parsePointTime(SLPPoint* point) {
   } else {
     char* endptr = NULL;
     point->ts = strtoll(point->tsToken.z, &endptr, 10);
+    char* last = point->tsToken.z + point->tsToken.n - 1;
+    if (*last == 's') {
+      point->ts *= (int64_t)1e9;
+    } else if (*last == 'a') {
+      point->ts *= (int64_t)1e6;
+    } else if (*last == 'u') {
+      point->ts *= (int64_t)1e3;
+    } else if (*last == 'b') {
+      point->ts *= 1;
+    }
   }
   return 0;
 }
@@ -1083,7 +1099,7 @@ int32_t tscParseLine(SStrToken line, SLPPoint* point) {
 
 int32_t tscParseLines(char* lines[], int numLines, SArray* points, SArray* failedLines) {
   for (int32_t i = 0; i < numLines; ++i) {
-    SStrToken tkLine = {.z = lines[i], .n = (uint32_t)strlen(lines[i])+1};
+    SStrToken tkLine = {.z = lines[i], .n = (uint32_t)strlen(lines[i])};
     SLPPoint point;
     tscParseLine(tkLine, &point);
     taosArrayPush(points, &point);
diff --git a/tests/examples/c/apitest.c b/tests/examples/c/apitest.c
index 376b00ef711bc2f59af9198998caa2c87f699b7a..ed76e7b2b020ba1eef6e9ce6c08d5d2dae68267b 100644
--- a/tests/examples/c/apitest.c
+++ b/tests/examples/c/apitest.c
@@ -966,13 +966,16 @@ int32_t verify_schema_less(TAOS* taos) {
   char* lines[] = {
       "st,t1=3i,t2=4,t3=\"t3\" c1=3i,c3=L\"passit\",c2=false,c4=4 1626006833639000000",
       "st,t1=4i,t3=\"t4\",t2=5,t4=5 c1=3i,c3=L\"passitagin\",c2=true,c4=5,c5=5 1626006833640000000",
-      "st,t1=4i,t2=5,t3=\"t4\" c1=3i,c3=L\"passitagain\",c2=true,c4=5 1626006833642000000",
       "ste,t2=5,t3=L\"ste\" c1=true,c2=4,c3=\"iam\" 1626056811823316532",
+      "st,t1=4i,t2=5,t3=\"t4\" c1=3i,c3=L\"passitagain\",c2=true,c4=5 1626006833642000000",
       "ste,t2=5,t3=L\"ste2\" c3=\"iamszhou\",c4=false 1626056811843316532",
-      "ste,t2=5,t3=L\"ste2\" c3=\"iamszhou\",c4=false,c5=32b,c6=64s,c7=32w,c8=88.88f 1626056812843316532"
+      "ste,t2=5,t3=L\"ste2\" c3=\"iamszhou\",c4=false,c5=32b,c6=64s,c7=32w,c8=88.88f 1626056812843316532",
+      "st,t1=4i,t3=\"t4\",t2=5,t4=5 c1=3i,c3=L\"passitagin\",c2=true,c4=5,c5=5,c6=7u 1626006933640000000",
+      "stf,t1=4i,t3=\"t4\",t2=5,t4=5 c1=3i,c3=L\"passitagin\",c2=true,c4=5,c5=5,c6=7u 1626006933640000000",
+      "stf,t1=4i,t3=\"t4\",t2=5,t4=5 c1=3i,c3=L\"passitagin_stf\",c2=false,c5=5,c6=7u 1626006933641a"
   };
 
-  //int code = taos_insert_by_lines(taos, lines , 6);
+//  int code = taos_insert_by_lines(taos, lines , sizeof(lines)/sizeof(char*));
   int code = taos_insert_by_lines(taos, &lines[0], 1);
   code = taos_insert_by_lines(taos, &lines[1], 1);