rowid

I've a custom list view with 4 textViews and 2 buttons,which i am filling up via database, TV NAME | TV EMAIL | TV NO | TV ID(database primary key,set invisible) | ButtonEDIT | ButtonDelete. I successfully got the id from the database,which is set as primary key. Now what i want to do is,when i PRESS ButtonEDIT,it should toast a message something like "Edit selected for ID :" + TVID.getText().toString(),so basically i want to display the value which is stored in the TVID(i.e. my database id). But when i am trying to do it,it only displays the firstID (0) for buttons of different rows,please do

In Oracle 10g, I have this SQL: select dog.id as dogId from CANINES dog order by dog.codename asc which returns: id -- 204 203 206 923 I want to extend this query to determine the oracle rownum of a dog.id in this resultset. I have tried select rownum from (select dog.id as dogId from CANINES dog order by dog.codename asc) where dog.id=206 But this does not work out very well (it returns 1 no matter which dog.id I match on). I was expecting to get back 3. Thanks for your help! Notes http://www.oracle.com/technology/oramag/oracle/06-sep/o56asktom.html I am pretty sure I do not need to use rowid

Is it bad to have text as a primary key in an SQLite database? I heard that it's bad for performance reasons, is this true? And will the rowid be used as the actual primary key in such a case? Is it bad to have text as a primary key in an SQLite database? I heard that it's bad for performance reasons, is this true? I never heard that somebody used string as primary key in table. For me (and I honestly hope also for others) very "ugly" practise with very low performance. If you'll use string as primary key you needs to think about a "few" things: Will be combination of 3 symbols enough? Or

I have a table that has a lot of duplicated rows and no primary key. I want to remove just the duplicated records, but when I try to do this it would remove all peers. How can I find the ROWID from a table in Postgres? Simplify this by one query level: DELETE FROM table_name WHERE ctid NOT IN ( SELECT min(ctid) FROM table_name GROUP BY $other_columns); .. where duplicates are defined by equality in $other_columns . There is no need to include columns from the GROUP BY clause in the SELECT list, so you don't need another subquery. ctid in the current manual. On PostgreSQL the physical location

AFAIK ROWID in Oracle represents physical location of a record in appropriate datafile. In which cases ROWID of a record may change ? The one known to me is UPDATE on partitioned table that "moves" the record to another partition. Are there another cases ? Most of our DBs are Oracle 10. As you have said, it occurs anytime the row is physically moved on disk, such as: Export/import of the table ALTER TABLE XXXX MOVE ALTER TABLE XXXX SHRINK SPACE FLASHBACK TABLE XXXX Splitting a partition Updating a value so that it moves to a new partition Combining two partitions If is in an index organized

My understanding is that the ROWID is a unique value for each row in the result returned by a query. Why do we need this ROWID? There is already the ROWNUM in ORACLE. Have any one used ROWID in a SQL query? ROWID is the physical location of a row. Consequently it is the fastest way of locating a row, faster even than a primary key lookup. So it can be useful in certain types of transaction where we select some rows, store their ROWIDs and then later on use the ROWIDs in where clauses for DML against those same rows. The Oracle SELECT ... FOR UPDATE syntax implicitly uses ROWID, when we update

What's the equivalent of Oracle's RowID in SQL Server? From the Oracle docs ROWID Pseudocolumn For each row in the database, the ROWID pseudocolumn returns the address of the row. Oracle Database rowid values contain information necessary to locate a row: The data object number of the object The data block in the datafile in which the row resides The position of the row in the data block (first row is 0) The datafile in which the row resides (first file is 1). The file number is relative to the tablespace. The closest equivalent to this in SQL Server is the rid which has three components File