diff --git a/utils/dataconvert/dataconvert.cpp b/utils/dataconvert/dataconvert.cpp
index 473282595..7f93821f7 100644
--- a/utils/dataconvert/dataconvert.cpp
+++ b/utils/dataconvert/dataconvert.cpp
@@ -1805,6 +1805,14 @@ int64_t DataConvert::intToDate(int64_t data)
 	//snprintf( buf, 10, "%llu", (long long unsigned int)data);
 	//string date = buf;
 	char buf[21] = {0};
+  	Date aday;
+    if (data == 0)
+    {
+        aday.year = 0;
+        aday.month = 0;
+    	aday.day = 0;
+        return *(reinterpret_cast<uint32_t*>(&aday));
+    }
 	snprintf( buf, 15, "%llu", (long long unsigned int)data);
 
 	string year, month, day, hour, min, sec, msec;
@@ -1866,7 +1874,6 @@ int64_t DataConvert::intToDate(int64_t data)
 		default:
 			return -1;
 	}
-	Date aday;
 	if (year.empty())
 	{
 		// MMDD format. assume current year
@@ -1900,6 +1907,20 @@ int64_t DataConvert::intToDatetime(int64_t data, bool* date)
 {
 	bool isDate = false;
 	char buf[21] = {0};
+    DateTime adaytime;
+    if (data == 0)
+    {
+        adaytime.year = 0;
+        adaytime.month = 0;
+    	adaytime.day = 0;
+    	adaytime.hour = 0;
+    	adaytime.minute = 0;
+    	adaytime.second = 0;
+    	adaytime.msecond = 0;
+        if (date)
+            *date = true;
+        return *(reinterpret_cast<uint64_t*>(&adaytime));
+    }
 	snprintf( buf, 15, "%llu", (long long unsigned int)data);
 	//string date = buf;
 	string year, month, day, hour, min, sec, msec;
@@ -1964,7 +1985,7 @@ int64_t DataConvert::intToDatetime(int64_t data, bool* date)
 		default:
 			return -1;
 	}
-	DateTime adaytime;
+
 	if (year.empty())
 	{
 		// MMDD format. assume current year
diff --git a/utils/funcexp/func_cast.cpp b/utils/funcexp/func_cast.cpp
index 2c032e99b..0bf45a3fc 100644
--- a/utils/funcexp/func_cast.cpp
+++ b/utils/funcexp/func_cast.cpp
@@ -510,20 +510,12 @@ int32_t Func_cast_date::getDateIntVal(rowgroup::Row& row,
 		case execplan::CalpontSystemCatalog::DECIMAL:
         case execplan::CalpontSystemCatalog::UDECIMAL:
 		{
-			if (parm[0]->data()->resultType().scale != 0)
-			{
+			val = dataconvert::DataConvert::intToDate(parm[0]->data()->getIntVal(row, isNull));
+			if (val == -1)
 				isNull = true;
-				break;
-			}
 			else
-			{
-				val = dataconvert::DataConvert::intToDate(parm[0]->data()->getIntVal(row, isNull));
-				if (val == -1)
-					isNull = true;
-				else
-					return val;
-				break;
-			}
+				return val;
+            break;
 		}
 		case execplan::CalpontSystemCatalog::VARCHAR:
 		case execplan::CalpontSystemCatalog::CHAR:
@@ -715,18 +707,11 @@ int64_t Func_cast_datetime::getDatetimeIntVal(rowgroup::Row& row,
 		case execplan::CalpontSystemCatalog::DECIMAL:
         case execplan::CalpontSystemCatalog::UDECIMAL:
 		{
-			if (parm[0]->data()->resultType().scale)
-			{
-				val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
-				if (val == -1)
-					isNull = true;
-				else
-					return val;
-			}
-			else
-			{
+			val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
+			if (val == -1)
 				isNull = true;
-			}
+			else
+				return val;
 			break;
 		}
 		case execplan::CalpontSystemCatalog::VARCHAR:
diff --git a/utils/funcexp/func_makedate.cpp b/utils/funcexp/func_makedate.cpp
index 610238357..99b09af91 100644
--- a/utils/funcexp/func_makedate.cpp
+++ b/utils/funcexp/func_makedate.cpp
@@ -78,8 +78,15 @@ uint64_t makedate(rowgroup::Row& row,
 			isNull = true;
 			return 0;
 	}
-
-	if (year < 1000 || year > 9999) {
+    if (year < 70)
+    {
+        year = 2000 + year;
+    }
+    else if (year < 100)
+    {
+        year = 1900 + year;
+    }
+    else if (year < 1000 || year > 9999) {
 		isNull = true;
 		return 0;
 	}
diff --git a/utils/funcexp/func_year.cpp b/utils/funcexp/func_year.cpp
index ff8de701d..f5179d576 100644
--- a/utils/funcexp/func_year.cpp
+++ b/utils/funcexp/func_year.cpp
@@ -75,6 +75,8 @@ int64_t Func_year::getIntVal(rowgroup::Row& row,
 		case CalpontSystemCatalog::SMALLINT:
 		case CalpontSystemCatalog::TINYINT:
 		case CalpontSystemCatalog::INT:
+        case CalpontSystemCatalog::FLOAT:
+        case CalpontSystemCatalog::DOUBLE:
 			val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));
 			if (val == -1)
 			{
@@ -85,7 +87,7 @@ int64_t Func_year::getIntVal(rowgroup::Row& row,
 			{
 				return (unsigned)((val >> 48) & 0xffff);
 			}
-			break;	
+			break;
 		case CalpontSystemCatalog::DECIMAL:
 			if (parm[0]->data()->resultType().scale == 0)
 			{