diff --git a/src/main/resources/egovframework/sqlmap/mapper/regi/complete_SQL.xml b/src/main/resources/egovframework/sqlmap/mapper/regi/complete_SQL.xml
index d5a9cfdb..8d61b24a 100644
--- a/src/main/resources/egovframework/sqlmap/mapper/regi/complete_SQL.xml
+++ b/src/main/resources/egovframework/sqlmap/mapper/regi/complete_SQL.xml
@@ -42,7 +42,9 @@
 	                    ORDER BY
 	                    <choose>
 	                        <when test="sortField == 'projectName'"> T.PROJECT_NAME ${sortDir} </when>
-	                        <when test="sortField == 'userName'"> T.USER_NAME ${sortDir} </when>
+	                        <when test="sortField == 'userName'">
+	                        	T.USER_NAME ${sortDir} <if test='sortDir == "desc"'> NULLS LAST </if>
+	                        </when>
 	
 	                        <when test="sortField == 'datetime'">
 	                            T.DATETIME ${sortDir} <if test='sortDir == "desc"'> NULLS LAST </if>
diff --git a/src/main/resources/egovframework/sqlmap/mapper/regi/holeCoord.xml b/src/main/resources/egovframework/sqlmap/mapper/regi/holeCoord.xml
index f2b03d4d..c68b9826 100644
--- a/src/main/resources/egovframework/sqlmap/mapper/regi/holeCoord.xml
+++ b/src/main/resources/egovframework/sqlmap/mapper/regi/holeCoord.xml
@@ -101,32 +101,36 @@
 	            SELECT ROW_NUMBER() OVER (ORDER BY 
 	    ]]>
 					<choose>
+						<!-- 프로젝트명 -->
 					  <when test="sortField == 'projectName' and sortDir == 'asc'">
 					    T.PROJECT_NAME ASC
 					  </when>
 					  <when test="sortField == 'projectName' and sortDir == 'desc'">
-					    T.PROJECT_NAME DESC
+					    T.PROJECT_NAME DESC NULLS LAST
 					  </when>
 					
+						<!-- 공급자 -->
 					  <when test="sortField == 'userName' and sortDir == 'asc'">
 					    T.USER_NAME ASC
 					  </when>
 					  <when test="sortField == 'userName' and sortDir == 'desc'">
-					    T.USER_NAME DESC
+					    T.USER_NAME DESC NULLS LAST
 					  </when>
 					
+						<!-- 등록자 -->
 					  <when test="sortField == 'createName' and sortDir == 'asc'">
 					    T.CREATE_NAME ASC
 					  </when>
 					  <when test="sortField == 'createName' and sortDir == 'desc'">
-					    T.CREATE_NAME DESC
+					    T.CREATE_NAME DESC NULLS LAST
 					  </when>
 					
+						<!-- 입력일시 -->
 					  <when test="sortField == 'datetime' and sortDir == 'asc'">
 					    T.DATETIME ASC
 					  </when>
 					  <otherwise>
-					    T.DATETIME DESC
+					    T.DATETIME DESC NULLS LAST
 					  </otherwise>
 					</choose>
 	    <![CDATA[
diff --git a/src/main/resources/egovframework/sqlmap/mapper/regi/listReg.xml b/src/main/resources/egovframework/sqlmap/mapper/regi/listReg.xml
index ab81ca89..1d04eb57 100644
--- a/src/main/resources/egovframework/sqlmap/mapper/regi/listReg.xml
+++ b/src/main/resources/egovframework/sqlmap/mapper/regi/listReg.xml
@@ -50,7 +50,7 @@
  				</when>
  				<!-- 프로젝트명 역순 정렬  -->
  				<when test="sortField == 'projectName' and sortDir == 'desc'">
- 					F.PROJECT_NAME DESC
+ 					F.PROJECT_NAME DESC NULLS LAST
  				</when>
  				
  				<!-- 공급자명 정렬  -->
@@ -59,7 +59,7 @@
  				</when>
  				<!-- 공급자명 역순 정렬  -->
  				<when test="sortField == 'userName' and sortDir == 'desc'">
- 					F.USER_NAME DESC
+ 					F.USER_NAME DESC NULLS LAST
  				</when>
  				
  				<!-- 시추공수 정렬  -->
@@ -68,7 +68,7 @@
  				</when>
  				<!-- 시추공수 역순 정렬  -->
  				<when test="sortField == 'holeCnt' and sortDir == 'desc'">
- 					F.HOLE_CNT DESC
+ 					F.HOLE_CNT DESC NULLS LAST
  				</when>
  				
  				<!-- 입력일시 정렬  -->
@@ -77,7 +77,7 @@
  				</when>
  				<!-- 입력일시 역순 정렬  -->
  				<otherwise>
- 					F.DATETIME DESC
+ 					F.DATETIME DESC NULLS LAST
  				</otherwise>
  			</choose>
  			<![CDATA[ 
diff --git a/src/main/resources/egovframework/sqlmap/mapper/regi/manageList.xml b/src/main/resources/egovframework/sqlmap/mapper/regi/manageList.xml
index 73d4d317..8056f9fd 100644
--- a/src/main/resources/egovframework/sqlmap/mapper/regi/manageList.xml
+++ b/src/main/resources/egovframework/sqlmap/mapper/regi/manageList.xml
@@ -203,7 +203,7 @@
 				</when>
 				<!-- 공급자 역순 정렬 -->
 				<when test="sortField == 'userName' and sortDir == 'desc'">
-				T.USER_NAME DESC
+				T.USER_NAME DESC NULLS LAST
 				</when>
 				
 				<!-- 입력일시 정렬 -->
@@ -212,7 +212,7 @@
 				</when>
 				<!-- 입력일시 역순 정렬 -->
 				<when test="sortField == 'datetime' and sortDir == 'desc'">
-				T.DATETIME DESC, OB.MODIFY_CALL_DATE ASC
+				T.DATETIME DESC NULLS LAST, OB.MODIFY_CALL_DATE ASC
 				</when>
 				
 				<!-- 공급일시 정렬 -->
@@ -221,7 +221,7 @@
 				</when>
 				<!-- 공급일시 역순 정렬 -->
 				<when test="sortField == 'regFinDate' and sortDir == 'desc'">
-				OC.DATETIME DESC
+				OC.DATETIME DESC NULLS LAST
 				</when>
 				
 				<!-- 차수 정렬 -->
@@ -230,7 +230,7 @@
 				</when>
 				<!-- 차수 역순 정렬 -->
 				<when test="sortField == 'histSeq' and sortDir == 'desc'">
-				OB.HIST_SEQ DESC, OC.DATETIME DESC
+				OB.HIST_SEQ DESC NULLS LAST, OC.DATETIME DESC NULLS LAST
 				</when>
 				
 				<!-- 요청일시 정렬 -->
@@ -239,7 +239,7 @@
 				</when>
 				<!-- 요청일시 역순 정렬 -->
 				<when test="sortField == 'modifyCallDate' and sortDir == 'desc'">
-				OB.MODIFY_CALL_DATE DESC
+				OB.MODIFY_CALL_DATE DESC NULLS LAST
 				</when>
 			</choose>
 		<![CDATA[