在附加的SQLite數據庫中的另一個表 - iPhone Xcode 4.6

Question

當我創建一個名爲'X'（取自現有的'Y'數據庫）的新表時，我無法將其附加到我的電子郵件。我知道，這是在我的iPhone（像我一樣

[ 「SELECT * FROM SQLITE_MASTER其中type = '表'」]

第一）。提前致謝。這裏是我的代碼：

-(void)displayComposerSheet 
{ 
    MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; 
    picker.mailComposeDelegate = self; 

    //FileManager - Object allows easy access to the File System. 
    NSFileManager *FileManager = [NSFileManager defaultManager]; 

    //Get the complete users document directory path. 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 

    //Get the fist path in the array. 
    NSString *documentsDirectory = [paths objectAtIndex:0]; 

    //Create the complete path to the database file. 
    NSString *databasePath = [documentsDirectory stringByAppendingPathComponent:@"X.sqlite"]; 

    NSData *data = [NSData dataWithContentsOfFile:databasePath]; 
    [picker addAttachmentData:data mimeType:@"application/x-sqlite3" fileName:@"X.sqlite"]; 

    [picker setMessageBody:emailBody isHTML:NO]; 
    [self presentViewController:picker animated:YES completion:nil]; 

} 

Answer 1

基本上，我做了以下內容：

//Delete Output file if it exists 
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) 
{ 
    if(insertStmt == nil) 
    { 
     sqlite3_stmt *selectStatement; 
     const char *sqlStatement=[[NSString stringWithFormat: 
            @"DROP TABLE IF EXISTS fileOutput"]UTF8String]; 
     if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) 
     { 
      if (sqlite3_prepare_v2(database, sqlStatement, -1, &selectStatement, NULL) != SQLITE_OK) 
      { 
       NSAssert1(0, @"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database)); 
      } 
      while (sqlite3_step(selectStatement) == SQLITE_ROW) 
      { 

      } 
      sqlite3_reset(selectStatement); 
      sqlite3_finalize(selectStatement); 
     } 
    } 
} 
sqlite3_close(database); 

//Add Output file 
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) 
{ 
    if(insertStmt == nil) 
    { 
     sqlite3_stmt *selectStatement; 
     const char *sqlStatement=[[NSString stringWithFormat: 
            @"CREATE TABLE fileOutput AS SELECT * FROM Y WHERE 0"]UTF8String]; 
     if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) 
     { 
      if (sqlite3_prepare_v2(database, sqlStatement, -1, &selectStatement, NULL) != SQLITE_OK) 
      { 
       NSAssert1(0, @"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database)); 
      } 
      while (sqlite3_step(selectStatement) == SQLITE_ROW) 
      { 

      } 
      sqlite3_reset(selectStatement); 
      sqlite3_finalize(selectStatement); 
     } 
    } 
} 
sqlite3_close(database); 

//Copy into table 
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) 
{ 
    if(insertStmt == nil) 
    { 
     sqlite3_stmt *selectStatement; 
     const char *sqlStatement=[[NSString stringWithFormat: 
            @"INSERT INTO fileOutput SELECT * FROM Y WHERE file IN ('%@')",pickerField]UTF8String]; 
     if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) 
     { 
      if (sqlite3_prepare_v2(database, sqlStatement, -1, &selectStatement, NULL) != SQLITE_OK) 
      { 
       NSAssert1(0, @"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database)); 
      } 
      while (sqlite3_step(selectStatement) == SQLITE_ROW) 
      { 

      } 
      sqlite3_reset(selectStatement); 
      sqlite3_finalize(selectStatement); 
     } 
    } 
} 
sqlite3_close(database); 

//Make the OUTPUT sqlite file 
[self deleteEditableCopyOfDatabaseIfNeeded]; 

//ATTACH OUTPUT file to Y 
const char *outputDBPath = [[documentsDirectory stringByAppendingPathComponent:@"X.sqlite"] UTF8String]; 

if (sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) { 
    NSString *attach = [NSString stringWithFormat: @"ATTACH DATABASE \'%s\' AS X", outputDBPath]; 
    const char *attachSQL = [attach UTF8String]; 
    char *errorMessage; 


    if (sqlite3_exec(database, attachSQL, NULL, NULL, &errorMessage) == SQLITE_OK) { 

//Copy the table into sqlite file 
      sqlite3_stmt *selectstmt; 
      const char *sqlStatement1 = "INSERT OR REPLACE INTO X (all the fields go here) SELECT * FROM fileOutput"; 
      if (sqlite3_prepare_v2(database,sqlStatement1, -1, &selectstmt, NULL) == SQLITE_OK) { 
       while (sqlite3_step(selectstmt) == SQLITE_ROW) { 
       //if(sqlite3_step(selectstmt)==SQLITE_DONE) 
      //{ 
        NSLog(@"insert successfully"); 
       } 
      } 
      else 
      { 
       NSLog(@"insert not successfully"); 

      } 
      sqlite3_finalize(selectstmt); 
     } 
    } 
    sqlite3_close(database); 




[self sendEmailWithFile];