diff --git a/backend-php/api.php b/backend-php/api.php
index 78a03c5..3596aa6 100644
--- a/backend-php/api.php
+++ b/backend-php/api.php
@@ -112,7 +112,7 @@ CreateApi(function ($api) {
         $classId = substr(strtoupper($req->data['classId']), 0, 10);
         // according docs (UPPERCASE, MIN 3 MAX 10)
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM classes WHERE classid = ?", [$classId]);
+        $results = FastDBReq($db, "SELECT classid FROM classes WHERE classid = ?", [$classId]);
         
         if (count($results) != 0) {
             return $results[0];
@@ -180,7 +180,7 @@ CreateApi(function ($api) {
         }
         $adminId = $req->data['adminId'];
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM admins WHERE adminid = ?", [$adminId]);
+        $results = FastDBReq($db, "SELECT adminId FROM admins WHERE adminid = ?", [$adminId]);
         
 
         if (count($results) != 0) {
@@ -203,7 +203,7 @@ CreateApi(function ($api) {
         if (!preg_match('/\d{1,2}-\d{1,2}-(\d{2}|\d{4})$/', $day)) return "wrong date format";
 
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM changes WHERE classId = ? AND forDay = ?", [$classId,  $day]);
+        $results = FastDBReq($db, "SELECT content FROM changes WHERE classId = ? AND forDay = ?", [$classId,  $day]);
 
 
         if (count($results) > 0) {
@@ -222,7 +222,7 @@ CreateApi(function ($api) {
                 return ['data' => $content, 'type' => 2];
             } else {
                 // without rings
-                $results = FastDBReq($db, "SELECT * FROM RINGS WHERE classId = ?", [$classId]);
+                $results = FastDBReq($db, "SELECT content, fromDate FROM RINGS WHERE classId = ?", [$classId]);
                 $rings = json_decode(findClosestDateSort($results, $day)['content'], true);
                 $out = $content;
                 if ($rings !== null) {
@@ -233,11 +233,11 @@ CreateApi(function ($api) {
         } else {
             // return shedules + calls
             $dayOfWeek = getDayOfWeek($day);
-            $results = FastDBReq($db, "SELECT * FROM schedules WHERE classId = ? AND dayOfWeek = ?", [$classId,  $dayOfWeek]);
+            $results = FastDBReq($db, "SELECT content, fromDate FROM schedules WHERE classId = ? AND dayOfWeek = ?", [$classId,  $dayOfWeek]);
             if (count($results) > 0) {
                 $out = [];
                 $schedule = json_decode(findClosestDateSort($results, $day)['content'], true);
-                $results = FastDBReq($db, "SELECT * FROM RINGS WHERE classId = ?", [$classId]);
+                $results = FastDBReq($db, "SELECT content, fromDate FROM RINGS WHERE classId = ?", [$classId]);
                 $rings = json_decode(findClosestDateSort($results, $day)['content'], true);
                 $out = $schedule;
                 if ($rings !== null) {
@@ -256,7 +256,7 @@ CreateApi(function ($api) {
         }
         $adminId = $req->data['adminId'];
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM admins WHERE adminId=?", [$adminId]);
+        $results = FastDBReq($db, "SELECT adminClass FROM admins WHERE adminId=?", [$adminId]);
         if (count($results) == 0) {
             $req->res->code(400);
             return "админ не найден";
@@ -272,18 +272,18 @@ CreateApi(function ($api) {
 
         if ($tab != 2) {
             if ($tab == 0) {
-                $results = FastDBReq($db, "SELECT * FROM changes WHERE classId = ? AND forDay = ?", [$classId,  $day]);
+                $results = FastDBReq($db, "SELECT content FROM changes WHERE classId = ? AND forDay = ?", [$classId,  $day]);
                 if (count($results) > 0) {
                     $changes = json_decode($results[0]['content'], true);
                 }
             }
             $dayOfWeek = getDayOfWeek($day);
-            $results = FastDBReq($db, "SELECT * FROM schedules WHERE classId = ? AND dayOfWeek = ?", [$classId,  $dayOfWeek]);
+            $results = FastDBReq($db, "SELECT content, fromDate FROM schedules WHERE classId = ? AND dayOfWeek = ?", [$classId,  $dayOfWeek]);
             if (count($results) > 0) {
                 $schedule = json_decode(findClosestDateSort($results, $day)['content'], true);
             }
         } else {
-            $results = FastDBReq($db, "SELECT * FROM RINGS WHERE classId = ?", [$classId]);
+            $results = FastDBReq($db, "SELECT content, fromDate FROM RINGS WHERE classId = ?", [$classId]);
             if (count($results) > 0) {
                 $rings = json_decode(findClosestDateSort($results, $day)['content'], true);
             }
@@ -315,7 +315,7 @@ CreateApi(function ($api) {
             }
             $adminId = $req->data['adminId'];
             $db = db();
-            $results = FastDBReq($db, "SELECT * FROM admins WHERE adminId=?", [$adminId]);
+            $results = FastDBReq($db, "SELECT adminClass FROM admins WHERE adminId=?", [$adminId]);
             if (count($results) == 0) {
                 $req->res->code(400);
                 return "админ не найден";
@@ -334,7 +334,7 @@ CreateApi(function ($api) {
                     // if no chnages skip, else publish
 
                     $dayOfWeek = getDayOfWeek($day);
-                    $results = FastDBReq($db, "SELECT * FROM schedules WHERE classId = ? AND dayOfWeek = ?", [$classId,  $dayOfWeek]);
+                    $results = FastDBReq($db, "SELECT fromDate, content FROM schedules WHERE classId = ? AND dayOfWeek = ?", [$classId,  $dayOfWeek]);
                     $publish = true;
                     if (count($results) > 0) {
                         $schedule = json_decode(findClosestDateSort($results, $day)['content'], true);
@@ -344,7 +344,7 @@ CreateApi(function ($api) {
                     }
                     if ($publish) {
                         // removing changes for today if they are exists
-                        $results = FastDBReq($db, "SELECT * FROM changes WHERE classId = ? AND forDay = ?", [$classId,  $day]);
+                        $results = FastDBReq($db, "SELECT content FROM changes WHERE classId = ? AND forDay = ?", [$classId,  $day]);
                         if (count($results) > 0) {
                             $changes = json_decode($results[0]['content'], true);
                             if ($newData === $changes) {
@@ -387,7 +387,7 @@ CreateApi(function ($api) {
         }
         $adminId = $req->data['adminId'];
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM admins WHERE adminId=?", [$adminId]);
+        $results = FastDBReq($db, "SELECT adminClass FROM admins WHERE adminId=?", [$adminId]);
         if (count($results) == 0) {
             $req->res->code(400);
             return "админ не найден";
@@ -425,7 +425,7 @@ CreateApi(function ($api) {
         }
         $adminId = $req->data['adminId'];
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM admins WHERE adminId=?", [$adminId]);
+        $results = FastDBReq($db, "SELECT adminPrems FROM admins WHERE adminId=?", [$adminId]);
         if (count($results) == 0) {
             $req->res->code(400);
             return "админ не найден";
@@ -486,7 +486,7 @@ CreateApi(function ($api) {
         }
         $adminId = $req->data['adminId'];
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM admins WHERE adminId=?", [$adminId]);
+        $results = FastDBReq($db, "SELECT adminPrems, adminClass FROM admins WHERE adminId=?", [$adminId]);
         if (count($results) == 0) {
             $req->res->code(400);
             return "админ не найден";
@@ -498,7 +498,7 @@ CreateApi(function ($api) {
 
         $classId = $results[0]['adminClass'];
 
-        $results = FastDBReq($db, "SELECT * FROM classes WHERE classId=?", [$classId]);
+        $results = FastDBReq($db, "SELECT classid FROM classes WHERE classid=?", [$classId]);
         if (count($results) == 0) {
             $req->res->code(400);
             return "класса не существует";
@@ -517,7 +517,7 @@ CreateApi(function ($api) {
         }
         $adminId = $req->data['adminId'];
         $db = db();
-        $results = FastDBReq($db, "SELECT * FROM admins WHERE adminId=?", [$adminId]);
+        $results = FastDBReq($db, "SELECT adminPrems, adminClass FROM admins WHERE adminId=?", [$adminId]);
         if (count($results) == 0) {
             $req->res->code(400);
             return "админ не найден";