is it better to use delete or upgrade to delete data in rows

if row_id goes from top to bottom and columns go left to right
i dont want to delete the row only all data .
is it better to use delete or upgrade?


column1|column2|column3
1 items | name1 |name2
2
3
4
5
is there a way to delete name1 and name2 without deleteing any rows?

i have some code ive been tring but it doesnt work.

Code (Text):

1.  
2. [B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055][LEFT]public[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]boolean[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] updatenotdelete([/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]long[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] rowId, String item, String have, String need, String got, String store, String cost) {
3. ContentValues args = [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]new[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] ContentValues();
4. [/SIZE][SIZE=2][COLOR=#3f7f5f][SIZE=2][COLOR=#3f7f5f]// args.put(KEY_ITEMS, item);[/LEFT]
5. [/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2][LEFT]args.put([/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]KEY_HAVE[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], have);
6. args.put([/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]KEY_NEED[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], need);
7. args.put([/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]KEY_GOT[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], got);
8. args.put([/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]KEY_STORE[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], store);
9. args.put([/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]KEY_COST[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], cost);
10.  
11. [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]return[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] [/SIZE][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]mDb[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2].update([/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]DATABASE_TABLE[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2], args, [/SIZE][I][SIZE=2][COLOR=#0000c0][SIZE=2][COLOR=#0000c0]KEY_ROWID[/I][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] + [/SIZE][SIZE=2][COLOR=#2a00ff][SIZE=2][COLOR=#2a00ff]"="[/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2] + rowId, [/SIZE][B][SIZE=2][COLOR=#7f0055][SIZE=2][COLOR=#7f0055]null[/B][/COLOR][/SIZE][/COLOR][/SIZE][SIZE=2]) > 0;[/LEFT]
12. }
13. [/SIZE]
14.  
15. [code]

 

update seems better i think