cursor

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am developing restaurant menu application. My app has a sqlite table which has these columns: "id", "category", "item_name" Contents of category column is of type string. Primary key of table is id . I want to retrieve data of particular category. For example, I want to retrieve item names of all items which are in category Veg and then display this result in list view. I have tried following different queries but both are not working. Please help me. String vg ="Veg"; Cursor mCursor = database.query(true, DATABASE_TABLE, new String[] {

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: To get a cursor in django I do: from django.db import connection cursor = connection.cursor() How would I get a dict cursor in django, the equivalent of - import MySQLdb connection = (establish connection) dict_cursor = connection.cursor(MySQLdb.cursors.DictCursor) Is there a way to do this in django? When I tried cursor = connection.cursor(MySQLdb.cursors.DictCursor) I got a Exception Value: cursor() takes exactly 1 argument (2 given) . Or do I need to connect directly with the python-mysql driver? The django docs suggest using dictfetchall

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In my application I have a listview. I get my data with a query from a SQLiteDatabase. When I get the data from the db I get this error: It occurs when I go from line 20 to 21. I tried placing cursor.deactivate() and cursor.close() on regel 50. But with no result. Anyone knows why I get this error and how to solve it? Thanks :) 回答1: You have to close the cursor before the database. Put your code in a try / catch block and in a finally block, close the cursor and then close the database: try { db = ... } catch(Exception ex) { // Log the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is there any way to GET the ContentValues object from the SQLite? It's very useful, that we can insert ContentValues in DB, and it should be more useful to get the CV from there. 回答1: You can use the method cursorRowToContentValues(Cursor cursor, ContentValues values) of the DatabaseUtils class. example Cursor c = db.query(tableName, tableColumn, where, whereArgs, groupBy, having, orderBy); ArrayList<ContentValues> retVal = new ArrayList<ContentValues>(); ContentValues map; if(c.moveToFirst()) { do { map = new ContentValues(); DatabaseUtils

python操作mysql 连接数据库 import pymysql ### 连接数据库的参数 conn = pymysql.connect( host='localhost',user='root',password='',database='zy',charset='utf8' ) # cursor = conn.cursor() ### 默认返回的值是元祖类型 cursor = conn.cursor(cursor=pymysql.cursors.DictCursor) ### 返回的值是字典类型 (*********) sql = "select * from class" cursor.execute(sql) # res = cursor.fetchall() ###取出所有的数据 返回的是列表套字典 # res = cursor.fetchone() ###取出一条数据 返回的是字典类型 res = cursor.fetchmany(12) ### 制定获取多少条数据 返回的是列表套字典 print(res) ### 元组类型 ((1, 'zekai', 1), (2, 'xxx', 2), (3, 'zekai1', 3)) cursor.close() conn.close() pymysql的sql注入 sql注入问题 输入用户名:zekai ' or 1=1

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm new to Vim. Now I'm trying to write a vim script. How can I get the word under the cursor and the text of the current line? I want to use it in my script, thanks. 回答1: You can with expand and getline : let wordUnderCursor = expand("<cword>") let currentLine = getline(".") 文章来源: How can I get the word under the cursor and the text of the current line in vim script?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am currently in the process of creating a Onscreen keyboard. I am handling the button click using routedcommands. The issue is that when i click on the button in keyboard panel the focus shifts to the button rather than on the Textbox. The requirement states that a cursor should always appear in the text box to indicate the position where the next character will be inserted. Is there a way i can keep focus on the textbox while button is clicked. 回答1: To set logical focus to an input control FocusManager.SetFocusedElement(this, textboxJack)

pymysql 安装：pip install pymysql 连接 import pymysql # 连接数据库的参数 conn =pymysql.connect(host='localhost',user='root',password='',database='feng',charset='utf8') # cursor=conn.cursor()#默认返回的值是元祖类型 cursor=conn.cursor(cursor=pymysql.cursors.DictCursor)#返回的值是字典类型 查 import pymysql # 连接数据库的参数 conn =pymysql.connect(host='localhost',user='root',password='',database='feng',charset='utf8') # cursor=conn.cursor()#默认返回的值是元祖类型 cursor=conn.cursor(cursor=pymysql.cursors.DictCursor)#返回的值是字典类型 sql="select * from userinfo" cursor.execute(sql) # res=cursor.fetchall()#取出所以的数据，返回的是列表套字典 res=cursor.fetchone()#取出一条数据

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to copy Image i receive from Intent to another directory. But I am unable to get it working yet. Need Help. My Logcat: Source: protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (resultCode == Activity.RESULT_OK) { switch (requestCode) { case SELECT_PICTURE: { Uri selectedImageURI = data.getData(); if (Build.VERSION.SDK_INT < 19) { String selectedImagePath = getPath(selectedImageURI); Bitmap bitmap = BitmapFactory.decodeFile(selectedImagePath);

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am using Delphi 7 under Windows 7 to download files. I want to change the cursor during the download. I set the Screen.Cursor := crHourGlass; , but , after looking at the constant cursor numbers in Controls.pas , I was wondering whether there are other numbers I can use to change the cursor into ( I don't want to add a cursor to my resource file, I just want to use standard numbers which I can use without having to add resources ). 回答1: does other numbers produce meaning full cursors No. Other numbers besides built-in cursors