diff --git a/src/main/resources/mappers/estimate/estimateMapper.xml b/src/main/resources/mappers/estimate/estimateMapper.xml
index 36dfaf67..c41cc87c 100644
--- a/src/main/resources/mappers/estimate/estimateMapper.xml
+++ b/src/main/resources/mappers/estimate/estimateMapper.xml
@@ -367,8 +367,7 @@
     <select id="selectEstimateRoofCertVolKw" parameterType="com.interplug.qcast.biz.estimate.dto.EstimateRequest" resultType="String">
         /* sqlid : com.interplug.qcast.biz.estimate.selectEstimateRoofCertVolKw */
       <![CDATA[
-        ;WITH
-             TCI AS (
+        ;WITH TCI AS (
                  SELECT
                      TI.CIRCUIT_NO,
                      TI.OBJECT_NO,
@@ -425,37 +424,37 @@
              X.value('(/x[1]/v[3])[1]', 'VARCHAR(50)') AS M_3
              FROM
              (
-             SELECT
-             CAST(
-             '<x><v>' + REPLACE(ISNULL(Z.CIRCUIT_CFG, ''), ',', '</v><v>') + '</v></x>' AS XML
-             )
-             ) A(X)
-             ) SPLIT
-             ),
+                 SELECT
+                 CAST(
+                 '<x><v>' + REPLACE(ISNULL(Z.CIRCUIT_CFG, ''), ',', '</v><v>') + '</v></x>' AS XML
+                 )
+                 ) A(X)
+                 ) SPLIT
+                 ),
              Y AS (
-         SELECT
-             ZC.ROOF_ITEM_NO,
-             ZC.M_ITEM_ID,
-             ZC.M_SPEC,
-             ZC.M_AMT,
-             (ZC.M_1 + ZC.M_2 + ZC.M_3) AS M_AMT2,
-             ZC.P_ITEM_ID,
-             TE.SPECIFICATION AS P_SPEC,
-             ZC.P_AMT,
+                SELECT
+                 ZC.ROOF_ITEM_NO,
+                 ZC.M_ITEM_ID,
+                 ZC.M_SPEC,
+                 ZC.M_AMT,
+                 (ZC.M_1 + ZC.M_2 + ZC.M_3) AS M_AMT2,
+                 ZC.P_ITEM_ID,
+                 TE.SPECIFICATION AS P_SPEC,
+                 ZC.P_AMT,
              (
-             SELECT
-             SPECIFICATION
-             FROM
-             T_PART_ROOF_ITEM_ESTIMATE TRI
-             INNER JOIN T_PART_ROOF_ESTIMATE TR ON TRI.ROOF_SURFACE_ID = TR.ROOF_SURFACE_ID
-             AND TRI.OBJECT_NO = TR.OBJECT_NO
-             AND TRI.PLAN_NO = TR.PLAN_NO
-             WHERE
-             TRI.OBJECT_NO = ZC.OBJECT_NO
-             AND TRI.PLAN_NO = ZC.PLAN_NO
-             AND TRI.ROOF_ITEM_NO = (ZC.ROOF_ITEM_NO + 1)
+                 SELECT
+                 SPECIFICATION
+                 FROM
+                 T_PART_ROOF_ITEM_ESTIMATE TRI
+                 INNER JOIN T_PART_ROOF_ESTIMATE TR ON TRI.ROOF_SURFACE_ID = TR.ROOF_SURFACE_ID
+                 AND TRI.OBJECT_NO = TR.OBJECT_NO
+                 AND TRI.PLAN_NO = TR.PLAN_NO
+                 WHERE
+                 TRI.OBJECT_NO = ZC.OBJECT_NO
+                 AND TRI.PLAN_NO = ZC.PLAN_NO
+                 AND TRI.ROOF_ITEM_NO = (ZC.ROOF_ITEM_NO + 1)
              ) AS M_SPEC2
-         FROM
+            FROM
              Z_CFG ZC
              INNER JOIN T_PART_ESTIMATE TE ON ZC.OBJECT_NO = TE.OBJECT_NO
              AND ZC.PLAN_NO = TE.PLAN_NO
@@ -463,48 +462,34 @@
              AND TE.ITEM_ID IN (ZC.P_ITEM_ID, ZC.PC_ITEM_ID, ZC.QCAST_CUST_PRD_ID)
              ),
              X AS (
-         SELECT
+            SELECT
              Y.M_ITEM_ID,
              Y.M_SPEC,
              (Y.M_AMT2 - Y.M_AMT) AS M_CNT,
              ROUND((Y.M_AMT * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000), 4) AS M_VOL,
              ROUND(
-             (Y.M_AMT2 * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000),
-             4
-             ) AS M_VOL2,
-             ROUND(
-             (
-             (Y.M_AMT2 - Y.M_AMT) * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000
-             ),
-             4
-             ) AS R_VOL,
+             (Y.M_AMT2 * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000),4) AS M_VOL2,
+             ROUND(((Y.M_AMT2 - Y.M_AMT) * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000),4) AS R_VOL,
              CASE
              WHEN Y.M_AMT < Y.M_AMT2 THEN ROUND((Y.M_AMT * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000), 4)
-             ELSE ROUND(
-             (Y.M_AMT2 * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000),
-             4
-             )
+             ELSE ROUND((Y.M_AMT2 * CAST(ISNULL(Y.M_SPEC, 0) AS FLOAT) / 1000), 4 )
              END AS M_VOL_KW,
              ROUND((Y.P_AMT * CAST(ISNULL(Y.P_SPEC, 0) AS FLOAT) / 1000), 4) AS PC_VOL_KW,
              CASE
-             WHEN 0 < (Y.M_AMT2 - Y.M_AMT) THEN ROUND(
-             (
-             (Y.M_AMT2 - Y.M_AMT) * CAST(ISNULL(Y.M_SPEC2, 0) AS FLOAT) / 1000
-             ),
-             4
-             )
+             WHEN 0 < (Y.M_AMT2 - Y.M_AMT) THEN ROUND(((Y.M_AMT2 - Y.M_AMT) * CAST(ISNULL(Y.M_SPEC2, 0) AS FLOAT) / 1000),4)
              ELSE 0
              END AS M_VOL_KW2
          FROM
-             Y
-             )
+             Y )
         SELECT
-            SUM(
-                    CASE
-                        WHEN (X.M_VOL_KW + X.M_VOL_KW2) < X.PC_VOL_KW THEN (X.M_VOL_KW + X.M_VOL_KW2)
-                        WHEN X.PC_VOL_KW <= (X.M_VOL_KW + X.M_VOL_KW2) THEN X.PC_VOL_KW
-                        ELSE 0
-                        END
+            CAST(
+                    SUM(
+                            CASE
+                                WHEN (X.M_VOL_KW + X.M_VOL_KW2) < X.PC_VOL_KW THEN (X.M_VOL_KW + X.M_VOL_KW2)
+                                WHEN X.PC_VOL_KW <= (X.M_VOL_KW + X.M_VOL_KW2) THEN X.PC_VOL_KW
+                                ELSE 0
+                                END
+                    ) AS DECIMAL(18,2)
             ) AS CERT_VOL_KW
         FROM
             X;