diff --git a/hwe/a_vote.php b/hwe/a_vote.php
index c7d3f606..3b232d31 100644
--- a/hwe/a_vote.php
+++ b/hwe/a_vote.php
@@ -8,16 +8,13 @@ $session = Session::requireGameLogin()->setReadOnly();
 $userID = Session::getUserID();
 $db = DB::db();
 $gameStor = KVStorage::getStorage($db, 'game_env');
-$connect=$db->get();
 
 increaseRefresh("설문조사", 1);
 
 $isVoteAdmin = in_array('vote', $session->acl[DB::prefix()]??[]);
 $isVoteAdmin |= $session->userGrade >= 5;
 
-$query = "select no,vote from general where owner='{$userID}'";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$me = MYDB_fetch_array($result);
+$me = $db->queryFirstRow('SELECT no,vote from general where owner=%i', $userID);
 
 $admin = $gameStor->getValues(['develcost','voteopen','vote_title','vote','votecomment']);
 $vote_title = $admin['vote_title']??'-';
@@ -84,13 +81,8 @@ echo "
     </tr>
 ";
 
-$query = "select no from general where vote>0 and npc<2";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$voteCount = MYDB_num_rows($result);
-
-$query = "select no from general where npc<2";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$allCount = MYDB_num_rows($result);
+$voteCount = $db->queryFirstField('SELECT count(no) FROM general WHERE vote>0 AND npc<2');
+$allCount = $db->queryFirstField('SELECT count(no) FROM general WHERE npc<2');
 
 $percentage = round($voteCount / $allCount * 100, 1);
 
@@ -106,9 +98,7 @@ for ($i=1; $i < $voteTypeCount; $i++) {
             <input type=radio name=sel value={$i}>
         ";
     } elseif ($admin['voteopen'] >= 1 || $isVoteAdmin) {
-        $query = "select no from general where vote='{$i}'";
-        $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-        $vCount = MYDB_num_rows($result);
+        $vCount = $db->queryFirstField('SELECT count(no) FROM general WHERE vote=%i', $i);
 
         $per = @round($vCount / $voteCount * 100, 1);
         echo "{$vCount} 표 ({$per}%)";
@@ -268,9 +258,7 @@ if ($admin['voteopen'] >= 1 || $isVoteAdmin) {
 }
 
 if ($admin['voteopen'] >= 2 || $isVoteAdmin) {
-    $query = "select no from general where nation=0 and npc<2";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-    $memCount = MYDB_num_rows($result);
+    $memCount = $db->queryFirstField('SELECT count(no) FROM general WHERE nation=0 AND npc <2');
     if ($memCount == 0) {
         $memCount = 1;
     }
@@ -312,15 +300,8 @@ if ($admin['voteopen'] >= 2 || $isVoteAdmin) {
     </tr>
     ";
 
-    $query = "select nation,color,name,gennum from nation order by gennum desc";
-    $nationResult = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-    $nationcount = MYDB_num_rows($nationResult);
-    for ($i=0; $i < $nationcount; $i++) {
-        $nation = MYDB_fetch_array($nationResult);
-
-        $query = "select no from general where nation='{$nation['nation']}' and npc<2";
-        $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-        $memCount = MYDB_num_rows($result);
+    foreach($db->query('SELECT nation,color,name,gennum from nation order by gennum desc') as $i=>$nation){
+        $memCount = $db->queryFirstField('SELECT count(no) FROM general WHERE nation=%i AND npc<2', $nation['nation']);
 
         
 
diff --git a/hwe/b_auction.php b/hwe/b_auction.php
index 8ea94b30..f040eeb8 100644
--- a/hwe/b_auction.php
+++ b/hwe/b_auction.php
@@ -27,13 +27,8 @@ if ($con >= 2) {
     exit();
 }
 
-$query = "select no from auction where no1='{$me['no']}'";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$tradeCount = MYDB_num_rows($result);
-
-$query = "select no from auction where no2='{$me['no']}'";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$bidCount = MYDB_num_rows($result);
+$tradeCount = $db->queryFirstField('SELECT count(no) FROM auction WHERE no1=%i', $me['no']);
+$bidCount = $db->queryFirstField('SELECT count(no) FROM auction where no2=%i', $me['no']);
 
 $btCount = $tradeCount + $bidCount;
 
diff --git a/hwe/b_dipcenter.php b/hwe/b_dipcenter.php
index f16a900b..fe3bc4e5 100644
--- a/hwe/b_dipcenter.php
+++ b/hwe/b_dipcenter.php
@@ -95,12 +95,11 @@ $nationcount = MYDB_num_rows($result);
 for ($i=0; $i < $nationcount; $i++) {
     $nation = MYDB_fetch_array($result);
 
+    //속령수
+    $citycount = $db->queryFirstField('SELECT count(city) FROM city WHERE nation=%i', $nation['nation']);
+
     // 아국표시
     if ($nation['nation'] == $me['nation']) {
-        //속령수
-        $query = "select city from city where nation='{$nation['nation']}'";
-        $result2 = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-        $citycount = MYDB_num_rows($result2);
         echo "
     <tr>
         <td align=center style=color:".newColor($nation['color']).";background-color:{$nation['color']};>{$nation['name']}</td>
@@ -115,14 +114,9 @@ for ($i=0; $i < $nationcount; $i++) {
         continue;
     }
 
-    $query = "select state,term from diplomacy where me='{$me['nation']}' and you='{$nation['nation']}'";
-    $result2 = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-    $dip = MYDB_fetch_array($result2);
+    $dip = $db->queryFirstRow('SELECT state,term FROM diplomacy WHERE me = %i AND you = %i', $me['nation'], $nation['nation']);
 
-    //속령수
-    $query = "select city from city where nation='{$nation['nation']}'";
-    $result2 = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-    $citycount = MYDB_num_rows($result2);
+    
     switch ($dip['state']) {
         case 0: $state = "<font color=red>교 전</font>"; break;
         case 1: $state = "<font color=magenta>선포중</font>"; break;
diff --git a/hwe/b_diplomacy.php b/hwe/b_diplomacy.php
index f0c9ef36..caf93202 100644
--- a/hwe/b_diplomacy.php
+++ b/hwe/b_diplomacy.php
@@ -32,9 +32,7 @@ $cityStr = "";
 for($i=0; $i < $nationcount; $i++) {
     $nation = MYDB_fetch_array($result);
 
-    $query = "select city from city where nation='{$nation['nation']}'";
-    $cityresult = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $citycount = MYDB_num_rows($cityresult);
+    $citycount = $db->queryFirstField('SELECT count(city) FROM city WHERE nation=%i', $nation['nation']);
 
 
     $nationnum[] = $nation['nation'];
diff --git a/hwe/c_auction.php b/hwe/c_auction.php
index d86e6cfe..0e41cb38 100644
--- a/hwe/c_auction.php
+++ b/hwe/c_auction.php
@@ -34,23 +34,15 @@ $userID = Session::getUserID();
 
 $db = DB::db();
 $gameStor = KVStorage::getStorage($db, 'game_env');
-$connect=$db->get();
 
 increaseRefresh("입찰", 1);
 
 $turnterm = $gameStor->turnterm;
 
-$query = "select no,name,gold,rice,special from general where owner='{$userID}'";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$me = MYDB_fetch_array($result);
+$me = $db->queryFirstRow('SELECT no,name,gold,rice,special from general where owner=%i', $userID);
 
-$query = "select no from auction where no1='{$me['no']}'";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$tradeCount = MYDB_num_rows($result);
-
-$query = "select no from auction where no2='{$me['no']}'";
-$result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-$bidCount = MYDB_num_rows($result);
+$tradeCount = $db->queryFirstField('SELECT count(no) FROM auction WHERE no1=%i', $me['no']);
+$bidCount = $db->queryFirstField('SELECT count(no) FROM auction WHERE no2=%i', $me['no']);
 
 $btCount = $tradeCount + $bidCount;
 
@@ -118,9 +110,7 @@ if ($btn == "판매") {
         ]);
     }
 } elseif ($btn == "구매시도") {
-    $query = "select no2,value,topv,expire,amount from auction where no='$sel'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-    $auction = MYDB_fetch_array($result);
+    $auction = $db->queryFirstRow('SELECT no2,value,topv,expire,amount FROM auction WHERE no=%i LIMIT 1', $sel);
 
     if ($value == $auction['topv']) {
         $valid = 2;
@@ -221,9 +211,7 @@ if ($btn == "판매") {
         ]);
     }
 } elseif ($btn == "판매시도") {
-    $query = "select no2,value,topv,expire,amount from auction where no='$sel'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect), "");
-    $auction = MYDB_fetch_array($result);
+    $auction = $db->queryFirstRow('SELECT no2,value,topv,expire,amount FROM auction WHERE no=%i LIMIT 1', $sel);
 
     if ($value == $auction['topv']) {
         $valid = 2;
diff --git a/hwe/c_myBossInfo.php b/hwe/c_myBossInfo.php
index f138d2c7..13e94edd 100644
--- a/hwe/c_myBossInfo.php
+++ b/hwe/c_myBossInfo.php
@@ -103,13 +103,8 @@ if($btn == "추방") {
 
     //이미 지정했다면 무시
     if($nation["l{$meLevel}set"] == 0 && $general['level'] > 0 && $general['level'] < 12) {
-        $query = "select no from diplomacy where me='{$general['nation']}' and state>='3' and state<='4'";
-        $dipresult = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-        $dipcount1 = MYDB_num_rows($dipresult);
-
-        $query = "select no from diplomacy where me='{$general['nation']}' and state>='5' and state<='6'";
-        $dipresult = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-        $dipcount2 = MYDB_num_rows($dipresult);
+        $dipcount1 = $db->queryFirstField('SELECT count(no) FROM diplomacy WHERE me=%i AND state>=3 AND state<=4', $general['nation']);
+        $dipcount2 = $db->queryFirstField('SELECT count(no) FROM diplomacy WHERE me=%i AND state>=5 AND state<=6', $general['nation']);
 
         $gold = 0;
         $rice = 0;
diff --git a/hwe/func.php b/hwe/func.php
index c24d0fb5..dd8e2b2b 100644
--- a/hwe/func.php
+++ b/hwe/func.php
@@ -545,30 +545,19 @@ function printCommandTable(General $generalObj) {
 function chiefCommandTable() {
     $db = DB::db();
     $gameStor = KVStorage::getStorage($db, 'game_env');
-    $connect=$db->get();
     $userID = Session::getUserID();
 
     $develcost = $gameStor->develcost;
 
-    $query = "select no,nation,city,level from general where owner='{$userID}'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $me = MYDB_fetch_array($result);
+    $me = $db->queryFirstRow('select no,nation,city,level from general where owner=%i', $userID);
+    $nation = $db->queryFirstRow('SELECT level,can_change_flag,gennum FROM nation WHERE nation=%i', $me['nation']);
 
-    $query = "select level,can_change_flag from nation where nation='{$me['nation']}'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $nation = MYDB_fetch_array($result);
-
-    $query = "select no from general where nation='{$me['nation']}'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $genCount = MYDB_num_rows($result);
-
-    $query = "select supply from city where city='{$me['city']}'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $city = MYDB_fetch_array($result);
+    $genCount = $nation['gennum'];
+    $citySupply = $db->queryFirstField('SELECT supply FROM city WHERE city=%i', $me['city']);
 
     if($nation['level'] > 0) { $valid = 1; }
     else { $valid = 0; }
-    if($city['supply'] == 0) { $valid = 0; }
+    if($citySupply == 0) { $valid = 0; }
 
     echo "
 <select name=commandtype size=1 style='height:20px;color:white;background-color:black;font-size:13px;'>";
diff --git a/hwe/func_auction.php b/hwe/func_auction.php
index c7e77fa1..1cdc5bc1 100644
--- a/hwe/func_auction.php
+++ b/hwe/func_auction.php
@@ -35,66 +35,7 @@ function registerAuction() {
     if($general['rice'] <  1000) { $general['rice'] =  1000; }
     if($general['rice'] > 20000) { $general['rice'] = 20000; }
 
-/*
-    // 유닉템 등록
-    $query = "select * from auction where stuff!='0'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $count = MYDB_num_rows($result);
-
-    // 유닉템 거래가 없을 경우 1% 확률로 등장
-    if($count == 0 && rand()%100 < 1) {
-        // 유닉템 선택
-        $sel = rand() % 4 + 1;
-        switch($sel) {
-        case 1: $type = "weap"; break;
-        case 2: $type = "book"; break;
-        case 3: $type = "horse"; break;
-        case 4: $type = "item"; break;
-        }
-        $query = "select no,{$type} from general where {$type}>6";
-        $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-        $count = MYDB_num_rows($result);
-        if($count < 20) {
-            for($i=0; $i < $count; $i++) {
-                $gen = MYDB_fetch_array($result);
-                $occupied[$gen[$type]] = 1;
-            }
-            for($i=7; $i <= 26; $i++) {
-                if($occupied[$i] == 0) {
-                    $item[] = $i;
-                }
-            }
-            $it = $item[rand() % count($item)];
-            $stuff = $it * 10 + $sel;
-
-            //평균 금의 100%
-            $amount = 1;
-            $cost = $general['gold'];
-            $topv = $general['maxgold'] * 10;
-            if($cost < 5000)  { $cost = 5000; }
-            if($topv < 10000) { $topv = 10000; }
-
-            $cost = Util::round($cost / 10) * 10;
-            $topv = Util::round($topv / 10) * 10;
-
-            $term = 12;
-            $date = date("Y-m-d H:i:s", strtotime(date("Y-m-d H:i:s")) + $unit * $term);
-            $query = "insert into auction (type, no1, name1, stuff, amount, cost, value, topv, expire) values (0, '0', 'ⓝ암시장상인', '$stuff', '$amount', '$cost', '$cost', '$topv', '$date')";
-            MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-
-            $josaYi = JosaUtil::pick(GetStuffName($stuff), '이');
-            $alllog[0] = "<C>●</>{$admin['month']}월:<C>".GetStuffName($stuff)."</>{$josaYi} 거래장에 등장했습니다!";
-            $josaUl = JosaUtil::pick(GetStuffName($stuff), '을');
-            $history[0] = "<C>●</>{$admin['year']}년 {$admin['month']}월:<C><b>【암시장】</b></><Y>ⓝ암시장상인</>이 <C>".GetStuffName($stuff)."</>{$josaUl} 판다는 소문이 돌고 있습니다!";
-            pushGeneralPublicRecord($alllog, $admin['year'], $admin['month']);
-            pushWorldHistory($history, $admin['year'], $admin['month']);
-        }
-    }
-*/
-
-    $query = "select * from auction where type='0' and stuff='0' and no1='0'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $count = MYDB_num_rows($result);
+    $count = $db->queryFirstField('SELECT count(*) FROM auction WHERE type=0 AND stuff=0 AND no1=0');
     $count += 5;
     // 판매건 등록
     if(rand()%$count == 0) {
@@ -116,9 +57,7 @@ function registerAuction() {
         MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
     }
 
-    $query = "select * from auction where type='1' and stuff='0' and no1='0'";
-    $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-    $count = MYDB_num_rows($result);
+    $count = $db->queryFirstField('SELECT count(*) FROM auction WHERE type=1 AND stuff=0 AND no1=0');
     $count += 5;
     // 구매건 등록
     if(rand()%$count == 0) {
diff --git a/hwe/func_tournament.php b/hwe/func_tournament.php
index 911a1b0f..232da61e 100644
--- a/hwe/func_tournament.php
+++ b/hwe/func_tournament.php
@@ -327,9 +327,7 @@ function fillLowGenAll() {
     ];
 
     for($i=0; $i < 8; $i++) {
-        $query = "select grp from tournament where grp='$i'";
-        $result = MYDB_query($query, $connect) or Error(__LINE__.MYDB_error($connect),"");
-        $grpCount[$i] = MYDB_num_rows($result);
+        $grpCount[$i] = $db->queryFirstField('SELECT count(grp) FROM tournament WHERE grp=%i', $i);
     }
 
     //자동신청하고, 돈 있고, 아직 참가 안한 장수