[FIX/#344] 쿼리오류 수정

src/main/java/com/assu/server/domain/admin/repository/AdminRepository.java

@@ -29,42 +29,39 @@ List<Admin> findMatchingAdmins(@Param("university") University university,
 		@Param("department") Department department,
 		@Param("major") Major major);
 
-    // 후보 수 카운트: 해당 partner와 ACTIVE 제휴가 없는 admin 수
-    @Query(value = """
-        SELECT COUNT(*)
-        FROM admin a
+	// 후보 수 카운트
+	@Query("""
+        SELECT COUNT(a)
+        FROM Admin a
         WHERE NOT EXISTS (
-            SELECT 1 FROM paper pa
-            WHERE pa.admin_id = a.id
-              AND pa.partner_id = :partnerId
-              AND pa.is_activated = 'ACTIVE'
+            SELECT 1 FROM Paper pa
+            WHERE pa.admin = a
+              AND pa.partner.id = :partnerId
+              AND pa.isActivated = com.assu.server.domain.common.enums.ActivationStatus.ACTIVE
         )
-        """, nativeQuery = true)
-    long countPartner(@Param("partnerId") Long partnerId);
+        """)
+	long countPartner(@Param("partnerId") Long partnerId);
 
-    // 랜덤 오프셋으로 1~N건 가져오기 (LIMIT :offset, :limit)
-    @Query(value = """
-        SELECT a.*
-        FROM admin a
+	// 랜덤 오프셋 조회
+	@Query("""
+        SELECT a
+        FROM Admin a
         WHERE NOT EXISTS (
-            SELECT 1 FROM paper pa
-            WHERE pa.admin_id = a.id
-              AND pa.partner_id = :partnerId
-              AND pa.is_activated = 'ACTIVE'
+            SELECT 1 FROM Paper pa
+            WHERE pa.admin = a
+              AND pa.partner.id = :partnerId
+              AND pa.isActivated = com.assu.server.domain.common.enums.ActivationStatus.ACTIVE
         )
-        LIMIT :offset, :limit
-        """, nativeQuery = true)
-    List<Admin> findPartnerWithOffset(@Param("partnerId") Long partnerId,
-                                       @Param("offset") int offset,
-                                       @Param("limit") int limit);
+        """)
+	List<Admin> findPartnerWithOffset(@Param("partnerId") Long partnerId, Pageable pageable);
 
     @Query("""
         SELECT DISTINCT a
         FROM Admin a
         LEFT JOIN FETCH a.member
         WHERE a.point IS NOT NULL
-          AND function('ST_Contains', function('ST_GeomFromText', :wkt, 4326), a.point) = true
-        """)
+      AND ST_Contains(ST_GeomFromText(:wkt, 4326), a.point) = true
+    """)
     List<Admin> findAllWithinViewportWithMember(@Param("wkt") String wkt, Pageable pageable);
 
     @Query("""

src/main/java/com/assu/server/domain/admin/repository/StudentAdminRepository.java

@@ -33,7 +33,7 @@ Long countTodayUsersByAdmin(
     );
 
     @Query("""
-    SELECT new com.assu.server.domain.mapping.dto.StoreUsageWithPaper(
+    SELECT new com.assu.server.domain.admin.dto.StoreUsageWithPaper(
       p.id, p.store.id, p.store.name, COUNT(pu.id)
     )
     FROM PartnershipUsage pu

src/main/java/com/assu/server/domain/admin/service/AdminServiceImpl.java

@@ -11,6 +11,8 @@
 import com.assu.server.global.apiPayload.code.status.ErrorStatus;
 import com.assu.server.global.exception.DatabaseException;
 import lombok.RequiredArgsConstructor;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -24,14 +26,11 @@ public class AdminServiceImpl implements AdminService {
     private final AdminRepository adminRepository;
     private final PartnerRepository partnerRepository;
 
-	@Override
-	@Transactional
-	public List<Admin> findMatchingAdmins(University university, Department department, Major major){
-
-		List<Admin> adminList = adminRepository.findMatchingAdmins(university, department, major);
-
-		return adminList;
-	}
+    @Override
+    @Transactional
+    public List<Admin> findMatchingAdmins(University university, Department department, Major major){
+        return adminRepository.findMatchingAdmins(university, department, major);
+    }
 
     @Override
     @Transactional(readOnly = true)
@@ -40,19 +39,22 @@ public AdminResponseDTO suggestRandomPartner(Long adminId) {
         Admin admin = adminRepository.findById(adminId)
                 .orElseThrow(() -> new DatabaseException(ErrorStatus.NO_SUCH_ADMIN));
 
-        long total = partnerRepository.countUnpartneredActiveByAdmin(admin.getId());
+        long total = partnerRepository.countUnpartneredActiveByAdmin(admin.getId(), com.assu.server.domain.common.enums.ActivationStatus.ACTIVE);
         if (total <= 0) {
             throw new DatabaseException(ErrorStatus.NO_AVAILABLE_PARTNER);
         }
 
         int offset = ThreadLocalRandom.current().nextInt((int)total);
 
-        Partner picked = partnerRepository.findUnpartneredActiveByAdminWithOffset(admin.getId(), offset);
-        if(picked == null) {
+        Pageable pageable = PageRequest.of(offset, 1);
+        List<Partner> pickedList = partnerRepository.findUnpartneredActiveByAdminWithOffset(admin.getId(), com.assu.server.domain.common.enums.ActivationStatus.ACTIVE, pageable);
+
+        if (pickedList.isEmpty()) {
             throw new DatabaseException(ErrorStatus.NO_AVAILABLE_PARTNER);
         }
 
+        Partner picked = pickedList.get(0);
+
         return AdminResponseDTO.from(picked);
     }
-
-}
+}

src/main/java/com/assu/server/domain/partner/repository/PartnerRepository.java

@@ -1,6 +1,7 @@
 package com.assu.server.domain.partner.repository;
 
 import com.assu.server.domain.partner.entity.Partner;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
@@ -11,41 +12,41 @@ public interface PartnerRepository extends JpaRepository<Partner, Long> {
 
     boolean existsByPhoneNum(String phoneNum);
 
-    // 현재 admin과 'ACTIVE' 상태로 제휴 중인 partner를 제외한 후보 수
-    @Query(value = """
-        SELECT COUNT(*)
-        FROM partner p
-        LEFT JOIN paper pa
-          ON pa.partner_id = p.id
-         AND pa.admin_id = :adminId
-         AND pa.is_activated = 'ACTIVE'
-        WHERE pa.id IS NULL
-        """, nativeQuery = true)
-    long countUnpartneredActiveByAdmin(@Param("adminId") Long adminId);
-
-    // 위 후보들 중에서 offset 하나만 가져오기 (랜덤 오프셋으로 1건)
-    @Query(value = """
-        SELECT p.*
-        FROM partner p
-        LEFT JOIN paper pa
-          ON pa.partner_id = p.id
-         AND pa.admin_id = :adminId
-         AND pa.is_activated = 'ACTIVE'
-        WHERE pa.id IS NULL
-        LIMIT :offset, 1
-        """, nativeQuery = true)
-    Partner findUnpartneredActiveByAdminWithOffset(@Param("adminId") Long adminId,
-                                                   @Param("offset") int offset);
+    @Query("""
+        SELECT COUNT(p)
+        FROM Partner p
+        WHERE NOT EXISTS (
+            SELECT 1 FROM Paper pa
+            WHERE pa.partner = p
+              AND pa.admin.id = :adminId
+              AND pa.isActivated = :status
+        )
+        """)
+    long countUnpartneredActiveByAdmin(@Param("adminId") Long adminId, @Param("status") com.assu.server.domain.common.enums.ActivationStatus status);
 
+    @Query("""
+        SELECT p
+        FROM Partner p
+        WHERE NOT EXISTS (
+            SELECT 1 FROM Paper pa
+            WHERE pa.partner = p
+              AND pa.admin.id = :adminId
+              AND pa.isActivated = :status
+        )
+        """)
+    List<Partner> findUnpartneredActiveByAdminWithOffset(@Param("adminId") Long adminId, @Param("status") com.assu.server.domain.common.enums.ActivationStatus status, Pageable pageable);
+
+    // 반경 내 제휴업체 조회
     @Query("""
         SELECT DISTINCT p
         FROM Partner p
         LEFT JOIN FETCH p.member
         WHERE p.point IS NOT NULL
-          AND function('ST_Contains', function('ST_GeomFromText', :wkt, 4326), p.point) = true
+          AND ST_Contains(ST_GeomFromText(:wkt, 4326), p.point) = true
         """)
     List<Partner> findAllWithinViewportWithMember(@Param("wkt") String wkt);
 
+    // 키워드 검색
     @Query("""
         SELECT DISTINCT p
         FROM Partner p
@@ -55,6 +56,4 @@ WHERE LOWER(p.name) LIKE LOWER(CONCAT('%', :keyword, '%'))
     List<Partner> searchPartnerByKeywordWithMember(
             @Param("keyword") String keyword
     );
-
-
-}
+}

src/main/java/com/assu/server/domain/partner/service/PartnerServiceImpl.java

@@ -11,6 +11,8 @@
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
 
 import java.util.List;
 import java.util.concurrent.ThreadLocalRandom;
@@ -41,8 +43,8 @@ public PartnerResponseDTO getRandomAdmin(Long partnerId) {
             offset = ThreadLocalRandom.current().nextInt(0, (int)(total - limit + 1));
         }
 
-        List<Admin> picked = adminRepository.findPartnerWithOffset(partner.getId(), offset, limit);
-
+        Pageable pageable = PageRequest.of(offset, limit);
+        List<Admin> picked = adminRepository.findPartnerWithOffset(partner.getId(), pageable);
         List<PartnerResponseDTO.AdminLiteDTO> admins = picked.stream()
                 .map(PartnerResponseDTO.AdminLiteDTO::from)
                 .collect(Collectors.toList());