Can we use Rowid in WHERE clause?
- Can we use Rowid as primary key?
- Is it safe to use Rowid?
- Can we use WHERE and having clause together?
- What is Rowid example using Rowid?
Can we use Rowid as primary key?
You should not use ROWID as the primary key of a table. If you delete and reinsert a row with the Import and Export utilities, for example, then its rowid may change. If you delete a row, then Oracle may reassign its rowid to a new row inserted later.
Is it safe to use Rowid?
It would not be safe if you intended to use the ROWID a long period of time after you SELECT it-- for example, if you allow users to edit data locally and then synchronize with the master database some arbitrary length of time later.
Can we use WHERE and having clause together?
You can create a WHERE clause and HAVING clause involving the same column. To do so, you must add the column twice to the Criteria pane, then specify one instance as part of the HAVING clause and the other instance as part of the WHERE clause.
What is Rowid example using Rowid?
A row ID is a value that uniquely identifies a row in a table. A column or a host variable can have a row ID data type. A ROWID column enables queries to be written that navigate directly to a row in the table because the column implicitly contains the location of the row. Each value in a ROWID column must be unique.
Related Questions
-
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago -
Anonymous2 weeks ago
Expert answer2 weeks ago