Difference between revisions of "ROWID"
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<code lang="recital"> | <code lang="recital"> | ||
// Optimized update accounts row 35 with a 15% commission charge | // Optimized update accounts row 35 with a 15% commission charge | ||
| − | + | UPDATE accounts SET ord_value=ord_value*1.15, due_date = date()+30 WHERE ROWID=35 | |
| − | UPDATE accounts | + | |
| − | SET ord_value=ord_value*1.15, due_date = date()+30 | + | |
| − | WHERE ROWID=35 | + | |
</code> | </code> | ||
Latest revision as of 15:00, 4 July 2011
Purpose
Return a number identifying the row’s physical stored position in the table
Syntax
ROWID
See Also
PSEUDO COLUMNS, INSERT, SELECT, UPDATE
Description
A Pseudo Column behaves like a table column, but is not actually stored in the table. You can select from Pseudo Columns, but they can not be updated. Pseudo Columns provide extra information about a SELECT row set.
The ROWID Pseudo Column will return a number identifying the row’s physical stored position in the table. The ROWID Pseudo Column can be used to perform singleton selects, or optimize updates of a known ROWID.
Example
// Optimized update accounts row 35 with a 15% commission charge UPDATE accounts SET ord_value=ord_value*1.15, due_date = date()+30 WHERE ROWID=35
Products
Recital, Recital Server
