cursor

Let's say I got a table, something like this: ID | TITLE 1 | AAA 2 | BBB 3 | CCC 4 | DDD 5 | EEE ... ... I want to perform a query, using IN opeator, while preserving the order of the IN Arguments database.query("some_table", null, ID + " IN("+ idsStr+")", null, null, null, null); For example, if the query is "select from some_table where id in (4,1,5) ...(order by???)", I want that the returned cursor to be sorted as 4,1,5 Is it possible? how? EDIT: Tested, works: SELECT * FROM books WHERE _id IN(4, 1, 5) ORDER BY CASE _id WHEN '4' THEN 1 WHEN '1' THEN 2 WHEN '5' THEN 3 ELSE 4 END, _id; I

默认 mongo server维护连接的时间窗口是十分钟 默认 单次从 server获取数据是101条或者 大于1M小于16M的数据 所以默认情况下，如果10分钟内未能处理完数据，则抛出该异常。 解决办法： 修改每批次获取数据量的条数，即batch size: collection.find({},{}}).batch_size(10) 批量数需 估算十分钟内能处理的数据量 延长超时时间 需显示的关闭cursor results = db.images.find({}{‘id’:1,‘image_path’:1,’_id’:0},no_cursor_timeout=True) for i in results: … … results.close() ———————————————— 原文链接：https://blog.csdn.net/zh0u_f/article/details/72897628 来源： https://blog.csdn.net/weixin_44816419/article/details/100804742

At this point I'm quite frustrated. I've been researching this for a few days and cannot even isolate anything beyond a cursor problem. I am extending ListActivity and using startManagingCursor(newcursor) in the OnCreate method. Here is the code (the database is already filled) that runs and crashes upon hitting the home button: private void loadAlbums() { try { newcursor = mDbHelper.getAlbumTitlesCursor(); dbalbumadapter = new AlbumListCursorAdapter(this, newcursor); setListAdapter(dbalbumadapter); } catch (SQLiteException s) { newcursor = null; fetchalbums = new FetchAlbumsTask().execute();

I've heard that using bind variables is (can be) more efficient, because for subsequent calls with a different bind value, the query itself is still the same, so it doesn't need to be parsed anymore. I understand why this is the case for fixed values. In the cursor below, the value is fixed on 1. If I have a different cursor that is the same, except the 1 becomes 2, it is a diffent query. Clear so far. declare cursor C_CURSOR is select * from TESTTABLE pt where pt.ID = 1; But I wondered if this is also the case when using PL/SQL variables inside the cursor. Are they expanded as if it's a fixed

I am trying to understand how I can call a PL/SQL procedure which takes a SYS_REFCURSOR as IN parameter. Consider the following PL/SQL procedure: print_cursor_contents(myCursor SYS_REFCURSOR , row_count OUT NUMBER); At the time of binding value to the IN parameter which setXXX method do I use ? To me a java Class with individual cursor record fields , as it members and a Array of instances of this class seems the proper way to represent a plsql CURSOR. I get a SQLException when I do this: I used the following set method callStmt.setObject(1, curRec); Here is the exception I got for using the

<span style="cursor:auto"> Auto</span><br /> <span style="cursor:crosshair"> Crosshair</span><br /> <span style="cursor:default"> Default</span><br /> <span style="cursor:pointer"> Pointer</span><br /> <span style="cursor:move"> Move</span><br /> <span style="cursor:e-resize"> e-resize</span><br /> <span style="cursor:ne-resize"> ne-resize</span><br /> <span style="cursor:nw-resize"> nw-resize</span><br /> <span style="cursor:n-resize"> n-resize</span><br /> <span style="cursor:se-resize"> se-resize</span><br /> <span style="cursor:sw-resize"> sw-resize</span><br /> <span style="cursor:s

On 4.0.3, Code below cause warning "W/CursorWrapperInner(11252): Cursor finalized without prior close()". Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number)); getContentResolver().query(uri, null, null, null, null); In sorce, I found the warning where it come from, anyone tell me how to avoid as i doubt it related to some weird problem? I have also experienced this weird issue. I'm using a ContentProvider to provide me with a Cursor and a CursorLoader to handle the fetching in my Fragment/Activities. So I'm doing everything "to the book". I experienced this

I have a following stored procedure in which I have used a cursor. Depending on whether the cursor return any records or not I need to do some processing. But I am not sure how to check if the cursor return any records. CREATE OR REPLACE PROCEDURE SP_EMPLOYEE_LOOKUP_BY_EMP_ID ( IN_USER_ID IN NUMBER, IN_EMPLOYEE_ID NUMBER, IN_HC_AS_ON_DATE VARCHAR2, emp_cursor OUT SYS_REFCURSOR ) IS CURSOR employees IS SELECT * FROM EMPLOYEE e; BEGIN if(record exist ) then FOR employee IN employees LOOP // do something END LOOP; else if employees is empty then // do something else END; It's not possible to