sql - Does Oracle have a time-to-live feature for rows? -

-

in cassandra used using ttl clause of upserts sets number of seconds after upserted data deleted.

does oracle have feature this? haven't been able find it.

there ways implement feature, don't believe built in. easiest way have createdat column in table specifies when row has been inserted. then, create view recent rows, recent day:

create view v_table     select t.*     table t     t.createdat >= sysdate - 1;

this fixes data access side. delete rows, need additional job periodically delete old rows in table.


Comments

Post a Comment

Popular posts from this blog

node.js - How to mock a third-party api calls in the backend -

-
i'm testing application mocha , supertest, test like var request = require('supertest'), app = require('./bootstrap.js'); describe('...', function() { it('...', function() { request(app) .get('/some/url') // ... }); }); the bootstrap.js real application before listen ports all works perfect have add calls third-party api , testing slow so when do, test example takes 5 seconds request(app) .get('/my/endpoint/that/makes/call/others') // ... how can make fake calls during test real when running application? you can use nock purpose.
Read more

java - Could not locate OpenAL library -

-
i writing game using slick2d library, uses lwjgl. lwjgl version 2.9.3. using netbeans 8. i tried adding sounds game, example music track on main menu. problem is, exception when run game, despite game still compiling , running except sound of course: sat mar 21 01:23:57 edt 2015 error:could not locate openal library. org.lwjgl.lwjglexception: not locate openal library. @ org.lwjgl.openal.al.create(al.java:156) @ org.lwjgl.openal.al.create(al.java:156) @ org.lwjgl.openal.al.create(al.java:102) @ org.lwjgl.openal.al.create(al.java:206) @ org.newdawn.slick.openal.soundstore$1.run(soundstore.java:295) @ java.security.accesscontroller.doprivileged(native method) @ org.newdawn.slick.openal.soundstore.init(soundstore.java:292) @ org.newdawn.slick.music.<init>(music.java:156) @ org.newdawn.slick.music.<init>(music.java:75) @ view.mainmenu.init(mainmenu.java:58) i didn't include rest of error states error happens in game code. the...
Read more

Non Unique Username with ASP.Net Identity 2.0 -

-
i have situation username not unique. email used username , 1 email can have many different passwords in database , legitimate. how use asp.net identity 2.0 in situation. var result = await signinmanager.passwordsigninasync(model.username, model.password, model.rememberme, shouldlockout: false); above line expects 1 user in database. if multiple records returned - returns failure. expected logic doesn't work me. how override logic? alternatively, ready customize login problem - not sure things done part of passwordsigninasync. adding cookies etc. please help. i made work. had use username + password combination unique username. these different situations in industry different types of needs.
Read more