小编Jef*_*eff的帖子

首先,这些是我的功能:

1. 插入功能

   func insert(book : Book) throws -> Bool {
       var insertPointer: OpaquePointer? = nil
       let query = "INSERT INTO BOOK (bookName, bookAuthor, bookDesc, bookDate, bookImg, createdBy) VALUES (?, ?, ?, ?, ?, ?)"
   
       defer{
           sqlite3_finalize(insertPointer)
       }
   
       if sqlite3_prepare_v2(db, query, -1, &insertPointer, nil) == SQLITE_OK {
           sqlite3_bind_text(insertPointer, 1, book.bookTitle, -1, nil)
           sqlite3_bind_text(insertPointer, 2, book.bookAuthor, -1, nil)
           sqlite3_bind_text(insertPointer, 3, book.bookDesc, -1, nil)
         //sqlite3_bind_date(insertPointer, 4, book.bookDate,nil)
         //sqlite3_bind_image(insertPointer, 5, book.bookImg, -1, nil)
           sqlite3_bind_text(insertPointer, 6, book.createdBy, -1, nil)
   
           guard sqlite3_step(insertPointer) == SQLITE_DONE else { …

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