導入第三方：libsqlite3.tbd
設置：-fno-objc-arc
設置路徑：進入沙河
NSString *home=[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
//拼接路徑
NSString *path=[home stringByAppendingPathComponent:@"student.db"];
pragma mark --fmdb打開操作
FMDatabase *fmdb=[[FMDatabase alloc]initWithPath:path];
if ([_fmdb open]) {
NSLog(@"打開成功");
}else{
NSLog(@"打開失敗”);
pragma mark -- fmdb 具體操作 增 刪 改 建表
NSString *deleteSql2=@"delete from t_student where age = ?";
[_fmdb executeUpdate:deleteSql2,@43];
pragma mark --FMDB 查詢
//相當于直接返回一個句柄
FMResultSet *resultSet=[_fmdb executeQuery:selectSql];
//句柄不夠
while ([resultSet next]) {
int ID=[resultSet intForColumn:@"ID"];
NSString *name=[resultSet stringForColumn:@"name"];
int age=[resultSet intForColumn:@"age"];
NSLog(@"ID = %d ,name = %@, age = %d",ID,name,age);
}
//關閉句柄
[resultSet close];
}
