Refactor: Update controllers and services for improved functionality and add new SQL queries
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logs/book-management.log
11188
logs/book-management.log
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@ -16,10 +16,7 @@ import org.springframework.web.bind.annotation.*;
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import java.util.List;
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/**
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* <p>
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* 前端控制器
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* </p>
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*
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* 书籍控制器
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* @author grtsinry43
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* @since 2025-05-19
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*/
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@ -48,7 +45,6 @@ public class BookController {
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}
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@GetMapping("/search/title")
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@AuthCheck(requiredRole = UserRole.USER)
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public ApiResponse<PageResponse<List<BookVO>>> searchBooksByTitle(@RequestParam String title,
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@RequestParam(defaultValue = "1") int pageNum,
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@RequestParam(defaultValue = "10") int pageSize) {
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@ -57,7 +53,6 @@ public class BookController {
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}
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@GetMapping("/search/author")
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@AuthCheck(requiredRole = UserRole.USER)
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public ApiResponse<PageResponse<List<BookVO>>> searchBooksByAuthor(@RequestParam String authorName,
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@RequestParam(defaultValue = "1") int pageNum,
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@RequestParam(defaultValue = "10") int pageSize) {
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@ -66,7 +61,6 @@ public class BookController {
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}
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@GetMapping("/search/publisher")
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@AuthCheck(requiredRole = UserRole.USER)
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public ApiResponse<PageResponse<List<BookVO>>> searchBooksByPublisher(@RequestParam String publisherName,
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@RequestParam(defaultValue = "1") int pageNum,
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@RequestParam(defaultValue = "10") int pageSize) {
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@ -13,6 +13,12 @@ import org.springframework.web.bind.annotation.*;
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import java.util.List;
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/**
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* 订单控制器
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*
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* @author grtsinry43
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* @since 2025-05-19
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*/
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@RestController
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@RequestMapping("/orders")
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public class OrdersController {
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@ -9,9 +9,7 @@ import org.springframework.web.bind.annotation.*;
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import java.util.List;
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/**
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* <p>
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* 前端控制器
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* </p>
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* 出版社控制器
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*
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* @author grtsinry43
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* @since 2025-05-19
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@ -11,6 +11,8 @@ import com.grtsinry43.bookmanagement.entity.Reader;
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import com.grtsinry43.bookmanagement.service.ReaderService;
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import com.grtsinry43.bookmanagement.util.JwtUtil;
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import com.grtsinry43.bookmanagement.vo.ReaderVO;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import org.springframework.beans.BeanUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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@ -21,9 +23,7 @@ import java.util.Map;
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import java.util.stream.Collectors;
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/**
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* <p>
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* 前端控制器
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* </p>
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* 读者控制器
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*
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* @author grtsinry43
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* @since 2025-05-19
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@ -63,7 +63,7 @@ public class ReaderController {
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@PostMapping("/login")
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@AuthCheck(requiredRole = UserRole.NOT_LOGIN)
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public ApiResponse<Map<String, Object>> login(@RequestBody LoginRequest loginRequest) {
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public ApiResponse<ReaderVO> login(@RequestBody LoginRequest loginRequest, HttpServletResponse response) {
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if (loginRequest.getUsername() == null || loginRequest.getPassword() == null ||
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loginRequest.getUsername().trim().isEmpty() || loginRequest.getPassword().isEmpty()) {
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throw new BusinessException(ErrorCode.PARAMS_ERROR);
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@ -72,11 +72,9 @@ public class ReaderController {
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Reader loggedInReader = readerService.login(loginRequest.getUsername(), loginRequest.getPassword());
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String token = JwtUtil.generateToken(loggedInReader.getReaderId().toString());
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Map<String, Object> responseData = new HashMap<>();
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responseData.put("token", token);
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responseData.put("user", convertToReaderVO(loggedInReader));
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response.setHeader("Authorization", token);
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return ApiResponse.success(responseData);
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return ApiResponse.success(convertToReaderVO(loggedInReader));
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}
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@GetMapping("/admin/all")
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@ -139,6 +139,7 @@ public class BookServiceImpl extends ServiceImpl<BookMapper, Book> implements Bo
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book1.setPublisherId(publisherId);
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}
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BeanUtils.copyProperties(book, book1);
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book1.setAuthor(String.join(",", book.getAuthors()));
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bookMapper.insert(book1);
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resetBookAuthors(book1.getBookId(), book.getAuthors());
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return buildBookVO(book1);
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@ -50,6 +50,7 @@ public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> impleme
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public OrderVO createOrder(OrderCreateDTO orderCreateDTO, Integer userId) {
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Orders order = new Orders();
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order.setOrderDate(LocalDateTime.now());
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order.setReaderId(userId);
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order.setStatus("PENDING");
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BigDecimal totalAmount = BigDecimal.ZERO;
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List<OrderItem> items = new ArrayList<>();
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@ -32,6 +32,7 @@ public class ReaderServiceImpl extends ServiceImpl<ReaderMapper, Reader> impleme
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this.passwordEncoder = new BCryptPasswordEncoder();
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}
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@Override
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public Reader getReaderById(Integer readerId) {
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if (readerId == null) {
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@ -10,4 +10,4 @@ server.port=8080
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mybatis.type-aliases-package=com.grtsinry43.bookmanagement.entity
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mybatis.configuration.map-underscore-to-camel-case=true
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logging.level.com.grtsinry43.bookmanagement.mapper=DEBUG
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#logging.level.com.grtsinry43.bookmanagement.mapper=DEBUG
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@ -2,4 +2,38 @@
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<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
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<mapper namespace="com.grtsinry43.bookmanagement.mapper.AuthorMapper">
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<!-- 1. 查询所有作者（单表+ORDER BY） -->
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<select id="findAllAuthors" resultType="com.grtsinry43.bookmanagement.entity.Author">
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SELECT * FROM author ORDER BY name
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</select>
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<!-- 2. 查询名字包含关键字的作者（单表+LIKE） -->
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<select id="findByNameLike" resultType="com.grtsinry43.bookmanagement.entity.Author">
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SELECT * FROM author WHERE name LIKE CONCAT('%', #{name}, '%')
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</select>
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<!-- 3. 查询每位作者的图书数量（连接+GROUP BY+COUNT） -->
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<select id="countBooksByAuthor" resultType="map">
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SELECT a.author_id, a.name, COUNT(ba.book_id) AS book_count
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FROM author a
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LEFT JOIN book_author ba ON a.author_id = ba.author_id
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GROUP BY a.author_id, a.name
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ORDER BY book_count DESC
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</select>
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<!-- 4. 查询没有图书的作者（嵌套NOT EXISTS） -->
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<select id="findAuthorsWithoutBooks" resultType="com.grtsinry43.bookmanagement.entity.Author">
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SELECT * FROM author a WHERE NOT EXISTS (
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SELECT 1 FROM book_author ba WHERE ba.author_id = a.author_id
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)
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</select>
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<!-- 5. 查询指定一组ID的作者（IN集合查询） -->
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<select id="findByIds" resultType="com.grtsinry43.bookmanagement.entity.Author">
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SELECT * FROM author WHERE author_id IN
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<foreach collection="ids" item="id" open="(" separator="," close=")">
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#{id}
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</foreach>
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</select>
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</mapper>
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@ -3,47 +3,128 @@
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<mapper namespace="com.grtsinry43.bookmanagement.mapper.BookMapper">
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<select id="findById" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book WHERE book_id = #{bookId}
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SELECT *
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FROM book
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WHERE book_id = #{bookId}
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</select>
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<select id="findAll" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book
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SELECT *
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FROM book
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</select>
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<select id="findByTitle" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book WHERE title LIKE CONCAT('%', #{title}, '%')
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SELECT *
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FROM book
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WHERE title LIKE CONCAT('%', #{title}, '%')
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</select>
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<select id="findByAuthor" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT b.* FROM book b
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JOIN book_author ba ON b.book_id = ba.book_id
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JOIN author a ON ba.author_id = a.author_id
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SELECT b.*
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FROM book b
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JOIN book_author ba ON b.book_id = ba.book_id
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JOIN author a ON ba.author_id = a.author_id
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WHERE a.name LIKE CONCAT('%', #{authorName}, '%')
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</select>
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<select id="findByPublisher" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT b.* FROM book b
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JOIN publisher p ON b.publisher_id = p.publisher_id
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SELECT b.*
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FROM book b
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JOIN publisher p ON b.publisher_id = p.publisher_id
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WHERE p.name LIKE CONCAT('%', #{publisherName}, '%')
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</select>
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<insert id="insert" parameterType="com.grtsinry43.bookmanagement.entity.Book" useGeneratedKeys="true" keyProperty="bookId">
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INSERT INTO book (title, isbn, price, stock, publish_date, publisher_id)
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VALUES (#{title}, #{isbn}, #{price}, #{stock}, #{publishDate}, #{publisherId})
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<!-- 1. 查询所有库存为0的图书（单表+ORDER BY） -->
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<select id="findOutOfStockBooks" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book WHERE stock = 0 ORDER BY publish_date DESC
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</select>
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<!-- 2. 查询每个出版社的图书数量（连接+GROUP BY+聚合） -->
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<select id="countBooksByPublisher" resultType="map">
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SELECT p.name AS publisher_name, COUNT(b.book_id) AS book_count
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FROM book b
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JOIN publisher p ON b.publisher_id = p.publisher_id
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GROUP BY p.name
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ORDER BY book_count DESC
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</select>
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<!-- 3. 查询价格高于平均价格的图书（嵌套查询+单表） -->
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<select id="findBooksAboveAveragePrice" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book WHERE price > (SELECT AVG(price) FROM book)
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</select>
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<!-- 4. 查询指定一组ISBN的图书（IN集合查询） -->
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<select id="findByIsbns" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book WHERE isbn IN
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<foreach collection="isbns" item="isbn" open="(" separator="," close=")">
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#{isbn}
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</foreach>
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</select>
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<!-- 5. 查询有多位作者的图书（连接+GROUP BY+HAVING） -->
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<select id="findBooksWithMultipleAuthors" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT b.*
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FROM book b
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JOIN book_author ba ON b.book_id = ba.book_id
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GROUP BY b.book_id
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HAVING COUNT(ba.author_id) > 1
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</select>
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<!-- 6. 查询每个作者的图书总价（连接+GROUP BY+SUM） -->
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<select id="sumBookPriceByAuthor" resultType="map">
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SELECT a.name AS author_name, SUM(b.price) AS total_price
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FROM book b
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JOIN book_author ba ON b.book_id = ba.book_id
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JOIN author a ON ba.author_id = a.author_id
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GROUP BY a.name
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</select>
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<!-- 7. 查询未被任何订单购买过的图书（嵌套NOT EXISTS） -->
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<select id="findBooksNeverOrdered" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book b WHERE NOT EXISTS (
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SELECT 1 FROM order_item oi WHERE oi.book_id = b.book_id
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)
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</select>
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<!-- 8. 查询最近出版的5本图书（单表+ORDER BY+LIMIT） -->
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<select id="findLatestBooks" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book ORDER BY publish_date DESC LIMIT 5
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</select>
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<!-- 9. 查询价格在指定区间的图书（BETWEEN集合查询） -->
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<select id="findBooksByPriceRange" resultType="com.grtsinry43.bookmanagement.entity.Book">
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SELECT * FROM book WHERE price BETWEEN #{minPrice} AND #{maxPrice}
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</select>
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<!-- 10. 查询每本书的销量（连接+GROUP BY+SUM） -->
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<select id="findBookSales" resultType="map">
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SELECT b.book_id, b.title, SUM(oi.quantity) AS total_sales
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FROM book b
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JOIN order_item oi ON b.book_id = oi.book_id
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GROUP BY b.book_id, b.title
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ORDER BY total_sales DESC
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</select>
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<insert id="insert" parameterType="com.grtsinry43.bookmanagement.entity.Book" useGeneratedKeys="true"
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keyProperty="bookId">
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INSERT INTO book (title, isbn, price, stock, publish_date, publisher_id, author)
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VALUES (#{title}, #{isbn}, #{price}, #{stock}, #{publishDate}, #{publisherId}, #{author})
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</insert>
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<update id="update" parameterType="com.grtsinry43.bookmanagement.entity.Book">
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UPDATE book
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SET title = #{title},
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isbn = #{isbn},
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price = #{price},
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stock = #{stock},
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SET title = #{title},
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isbn = #{isbn},
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price = #{price},
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stock = #{stock},
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publish_date = #{publishDate},
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publisher_id = #{publisherId}
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WHERE book_id = #{bookId}
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</update>
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<delete id="delete">
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DELETE FROM book WHERE book_id = #{bookId}
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DELETE
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FROM book
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WHERE book_id = #{bookId}
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</delete>
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</mapper>
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@ -11,6 +11,38 @@
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VALUES (#{orderId}, #{bookId}, #{quantity}, #{unitPrice})
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</insert>
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<!-- 1. 查询某本书的所有订单明细（单表+ORDER BY） -->
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<select id="findByBookId" resultType="com.grtsinry43.bookmanagement.entity.OrderItem">
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SELECT * FROM order_item WHERE book_id = #{bookId} ORDER BY order_id DESC
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</select>
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<!-- 2. 查询订单明细中数量大于指定值的记录（单表+条件） -->
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<select id="findByQuantityGreaterThan" resultType="com.grtsinry43.bookmanagement.entity.OrderItem">
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SELECT * FROM order_item WHERE quantity > #{quantity}
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</select>
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<!-- 3. 查询每本书的总售出数量（连接+GROUP BY+SUM） -->
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<select id="sumQuantityByBook" resultType="map">
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SELECT b.title, SUM(oi.quantity) AS total_quantity
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FROM order_item oi
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JOIN book b ON oi.book_id = b.book_id
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GROUP BY b.title
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ORDER BY total_quantity DESC
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</select>
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<!-- 4. 查询某订单下所有图书的单价（连接查询） -->
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<select id="findBookUnitPricesByOrderId" resultType="map">
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SELECT b.title, oi.unit_price
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FROM order_item oi
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JOIN book b ON oi.book_id = b.book_id
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WHERE oi.order_id = #{orderId}
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</select>
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<!-- 5. 查询未被任何订单明细引用的图书ID（嵌套NOT IN） -->
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<select id="findBookIdsNotInOrderItems" resultType="int">
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SELECT book_id FROM book WHERE book_id NOT IN (SELECT book_id FROM order_item)
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</select>
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<!-- Example for batch insert -->
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<!--
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<insert id="insertBatch" parameterType="java.util.List">
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@ -23,4 +23,72 @@
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UPDATE orders SET status = #{status} WHERE order_id = #{orderId}
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</update>
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<!-- 1. 查询所有已完成订单（单表+ORDER BY） -->
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<select id="findCompletedOrders" resultType="com.grtsinry43.bookmanagement.entity.Orders">
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SELECT * FROM orders WHERE status = 'COMPLETED' ORDER BY order_date DESC
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</select>
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<!-- 2. 查询每个用户的订单总金额（连接+GROUP BY+SUM） -->
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<select id="sumOrderAmountByReader" resultType="map">
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SELECT r.reader_id, r.username, SUM(o.total_amount) AS total_amount
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FROM orders o
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JOIN reader r ON o.reader_id = r.reader_id
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GROUP BY r.reader_id, r.username
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ORDER BY total_amount DESC
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</select>
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<!-- 3. 查询金额大于平均值的订单（嵌套查询） -->
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<select id="findOrdersAboveAverageAmount" resultType="com.grtsinry43.bookmanagement.entity.Orders">
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SELECT * FROM orders WHERE total_amount > (SELECT AVG(total_amount) FROM orders)
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</select>
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<!-- 4. 查询指定状态集合的订单（IN集合查询） -->
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<select id="findByStatuses" resultType="com.grtsinry43.bookmanagement.entity.Orders">
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SELECT * FROM orders WHERE status IN
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<foreach collection="statuses" item="status" open="(" separator="," close=")">
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#{status}
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</foreach>
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</select>
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<!-- 5. 查询没有订单明细的订单（嵌套NOT EXISTS） -->
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<select id="findOrdersWithoutItems" resultType="com.grtsinry43.bookmanagement.entity.Orders">
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SELECT * FROM orders o WHERE NOT EXISTS (
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SELECT 1 FROM order_item oi WHERE oi.order_id = o.order_id
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)
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</select>
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<!-- 6. 查询每月订单数量（聚合+GROUP BY） -->
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<select id="countOrdersByMonth" resultType="map">
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SELECT TO_CHAR(order_date, 'YYYY-MM') AS month, COUNT(*) AS order_count
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FROM orders
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GROUP BY TO_CHAR(order_date, 'YYYY-MM')
|
||||
ORDER BY month DESC
|
||||
</select>
|
||||
|
||||
<!-- 7. 查询最近一周的订单（单表+时间区间） -->
|
||||
<select id="findOrdersInLastWeek" resultType="com.grtsinry43.bookmanagement.entity.Orders">
|
||||
SELECT * FROM orders WHERE order_date >= NOW() - INTERVAL '7 days' ORDER BY order_date DESC
|
||||
</select>
|
||||
|
||||
<!-- 8. 查询订单金额在指定区间的订单（BETWEEN集合查询） -->
|
||||
<select id="findOrdersByAmountRange" resultType="com.grtsinry43.bookmanagement.entity.Orders">
|
||||
SELECT * FROM orders WHERE total_amount BETWEEN #{minAmount} AND #{maxAmount}
|
||||
</select>
|
||||
|
||||
<!-- 9. 查询每个状态的订单数量（聚合+GROUP BY） -->
|
||||
<select id="countOrdersByStatus" resultType="map">
|
||||
SELECT status, COUNT(*) AS order_count
|
||||
FROM orders
|
||||
GROUP BY status
|
||||
</select>
|
||||
|
||||
<!-- 10. 查询有订单但未支付的用户（连接+嵌套EXISTS） -->
|
||||
<select id="findReadersWithUnpaidOrders" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT DISTINCT r.*
|
||||
FROM reader r
|
||||
WHERE EXISTS (
|
||||
SELECT 1 FROM orders o WHERE o.reader_id = r.reader_id AND o.status = 'UNPAID'
|
||||
)
|
||||
</select>
|
||||
|
||||
</mapper>
|
||||
|
||||
@ -30,4 +30,42 @@
|
||||
DELETE FROM publisher WHERE publisher_id = #{publisherId}
|
||||
</delete>
|
||||
|
||||
<!-- 1. 查询所有含有指定地址的出版社（单表+LIKE+ORDER BY） -->
|
||||
<select id="findByAddressLike" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
|
||||
SELECT * FROM publisher WHERE address LIKE CONCAT('%', #{address}, '%') ORDER BY name
|
||||
</select>
|
||||
|
||||
<!-- 2. 查询出版图书数量大于5的出版社（连接+GROUP BY+HAVING） -->
|
||||
<select id="findPublishersWithManyBooks" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
|
||||
SELECT p.*
|
||||
FROM publisher p
|
||||
JOIN book b ON p.publisher_id = b.publisher_id
|
||||
GROUP BY p.publisher_id
|
||||
HAVING COUNT(b.book_id) > 5
|
||||
</select>
|
||||
|
||||
<!-- 3. 查询没有出版任何图书的出版社（嵌套NOT EXISTS） -->
|
||||
<select id="findPublishersWithoutBooks" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
|
||||
SELECT * FROM publisher p WHERE NOT EXISTS (
|
||||
SELECT 1 FROM book b WHERE b.publisher_id = p.publisher_id
|
||||
)
|
||||
</select>
|
||||
|
||||
<!-- 4. 查询指定一组ID的出版社（IN集合查询） -->
|
||||
<select id="findByIds" resultType="com.grtsinry43.bookmanagement.entity.Publisher">
|
||||
SELECT * FROM publisher WHERE publisher_id IN
|
||||
<foreach collection="ids" item="id" open="(" separator="," close=")">
|
||||
#{id}
|
||||
</foreach>
|
||||
</select>
|
||||
|
||||
<!-- 5. 查询每个出版社的图书平均价格（连接+GROUP BY+AVG） -->
|
||||
<select id="avgBookPriceByPublisher" resultType="map">
|
||||
SELECT p.name AS publisher_name, AVG(b.price) AS avg_price
|
||||
FROM publisher p
|
||||
JOIN book b ON p.publisher_id = b.publisher_id
|
||||
GROUP BY p.name
|
||||
ORDER BY avg_price DESC
|
||||
</select>
|
||||
|
||||
</mapper>
|
||||
|
||||
@ -27,4 +27,63 @@
|
||||
UPDATE reader SET is_banned = #{isBanned} WHERE reader_id = #{readerId}
|
||||
</update>
|
||||
|
||||
<!-- 2. 查询每个用户的订单数量（连接+GROUP BY+聚合） -->
|
||||
<select id="findReaderOrderCount" resultType="map">
|
||||
SELECT r.reader_id, r.username, COUNT(o.order_id) AS order_count
|
||||
FROM reader r
|
||||
LEFT JOIN orders o ON r.reader_id = o.reader_id
|
||||
GROUP BY r.reader_id, r.username
|
||||
ORDER BY order_count DESC
|
||||
</select>
|
||||
|
||||
<!-- 3. 查询有订单的用户信息（连接查询） -->
|
||||
<select id="findReadersWithOrders" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT DISTINCT r.*
|
||||
FROM reader r
|
||||
JOIN orders o ON r.reader_id = o.reader_id
|
||||
</select>
|
||||
|
||||
<!-- 4. 查询没有下过订单的用户（嵌套NOT IN） -->
|
||||
<select id="findReadersWithoutOrders" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT * FROM reader WHERE reader_id NOT IN (SELECT reader_id FROM orders)
|
||||
</select>
|
||||
|
||||
<!-- 5. 查询用户名在指定集合内的用户（IN集合查询） -->
|
||||
<select id="findByUsernames" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT * FROM reader WHERE username IN
|
||||
<foreach collection="usernames" item="name" open="(" separator="," close=")">
|
||||
#{name}
|
||||
</foreach>
|
||||
</select>
|
||||
|
||||
<!-- 6. 查询被封禁用户数量（聚合） -->
|
||||
<select id="countBannedReaders" resultType="int">
|
||||
SELECT COUNT(*) FROM reader WHERE is_banned = TRUE
|
||||
</select>
|
||||
|
||||
<!-- 7. 查询有订单且订单金额大于100的用户（嵌套EXISTS+连接） -->
|
||||
<select id="findReadersWithBigOrders" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT * FROM reader r WHERE EXISTS (
|
||||
SELECT 1 FROM orders o WHERE o.reader_id = r.reader_id AND o.total_amount > 100
|
||||
)
|
||||
</select>
|
||||
|
||||
<!-- 8. 查询每个用户的最后一次下单时间（连接+GROUP BY+聚合） -->
|
||||
<select id="findLastOrderDateByReader" resultType="map">
|
||||
SELECT r.reader_id, r.username, MAX(o.order_date) AS last_order_date
|
||||
FROM reader r
|
||||
LEFT JOIN orders o ON r.reader_id = o.reader_id
|
||||
GROUP BY r.reader_id, r.username
|
||||
</select>
|
||||
|
||||
<!-- 9. 查询邮箱为某域名的用户（单表LIKE） -->
|
||||
<select id="findByEmailDomain" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT * FROM reader WHERE email LIKE CONCAT('%', #{domain})
|
||||
</select>
|
||||
|
||||
<!-- 10. 查询所有未被封禁的管理员（单表多条件） -->
|
||||
<select id="findActiveAdmins" resultType="com.grtsinry43.bookmanagement.entity.Reader">
|
||||
SELECT * FROM reader WHERE is_admin = TRUE AND is_banned = FALSE
|
||||
</select>
|
||||
|
||||
</mapper>
|
||||
|
||||
@ -1,5 +1,37 @@
|
||||
-- 适用于 PostgreSQL 数据库
|
||||
|
||||
-- 触发器：当 book 库存变为 0 时，记录到 out_of_stock_log
|
||||
CREATE TABLE IF NOT EXISTS out_of_stock_log (
|
||||
log_id SERIAL PRIMARY KEY,
|
||||
book_id INT NOT NULL,
|
||||
out_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP
|
||||
);
|
||||
|
||||
CREATE OR REPLACE FUNCTION log_out_of_stock()
|
||||
RETURNS TRIGGER AS $$
|
||||
BEGIN
|
||||
IF NEW.stock = 0 AND OLD.stock > 0 THEN
|
||||
INSERT INTO out_of_stock_log (book_id) VALUES (NEW.book_id);
|
||||
END IF;
|
||||
RETURN NEW;
|
||||
END;
|
||||
$$ LANGUAGE plpgsql;
|
||||
|
||||
DROP TRIGGER IF EXISTS trg_book_out_of_stock ON book;
|
||||
CREATE TRIGGER trg_book_out_of_stock
|
||||
AFTER UPDATE ON book
|
||||
FOR EACH ROW
|
||||
EXECUTE FUNCTION log_out_of_stock();
|
||||
|
||||
-- 存储过程：批量封禁用户
|
||||
CREATE OR REPLACE PROCEDURE ban_readers(usernames TEXT[])
|
||||
LANGUAGE plpgsql
|
||||
AS $$
|
||||
BEGIN
|
||||
UPDATE reader SET is_banned = TRUE WHERE username = ANY(usernames);
|
||||
END;
|
||||
$$;
|
||||
|
||||
-- 创建数据库（如需）
|
||||
-- CREATE DATABASE book_management;
|
||||
|
||||
@ -52,7 +84,7 @@ CREATE TABLE reader
|
||||
reader_id SERIAL PRIMARY KEY,
|
||||
username VARCHAR(50) NOT NULL UNIQUE,
|
||||
password VARCHAR(100) NOT NULL,
|
||||
email VARCHAR(100) NOT NULL UNIQUE,
|
||||
email VARCHAR(100) UNIQUE,
|
||||
is_admin BOOLEAN NOT NULL DEFAULT FALSE,
|
||||
is_banned BOOLEAN NOT NULL DEFAULT FALSE,
|
||||
phone VARCHAR(20)
|
||||
@ -76,4 +108,4 @@ CREATE TABLE order_item
|
||||
book_id INT NOT NULL REFERENCES book (book_id),
|
||||
quantity INT NOT NULL CHECK (quantity > 0),
|
||||
unit_price NUMERIC(10, 2) NOT NULL CHECK (unit_price >= 0)
|
||||
);
|
||||
);
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user