OracleSQLPreparedStatement
From Xojo Documentation
Class (inherits from PreparedSQLStatement)
New in 2010r4
Used to create a PreparedSQLStatement for an Oracle Database.
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Notes
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The use of the prepared statement classes is rare because Database.SelectSQL and Database.ExecuteSQL utilize them automatically. See PreparedSQLStatement for information on cases where using prepared statement classes is appropriate. |
Oracle prepared statements use the leading colons as markers in the prepared statement, i.e.:
SELECT * FROM Persons WHERE Name = :name
All parameters must have their type specified. These are the constants to use with the BindType method:
| Constant |
|---|
| SQL_TYPE_CLOB |
| SQL_TYPE_DATE |
| SQL_TYPE_FLOAT |
| SQL_TYPE_INTEGER |
| SQL_TYPE_NULL |
| SQL_TYPE_STRING |
Sample Code
This code shows how to use database binding.
// "db" is an OracleDatabase object
Var ps As OracleSQLPreparedStatement
ps = OracleSQLPreparedStatement(db.Prepare("SELECT * FROM Persons WHERE Name = :name AND Age >= :age"))
ps.BindType(0, OracleSQLPreparedStatement.SQL_TYPE_STRING)
ps.BindType(1, OracleSQLPreparedStatement.SQL_TYPE_INTEGER)
ps.Bind(0, "John")
ps.Bind(1, 20)
Try
Var rs As RecordSet = ps.SelectSQL
// Use RecordSet as usual
Catch error As DatabaseException
MessageBox(db.ErrorMessage)
Return
End Try
Var ps As OracleSQLPreparedStatement
ps = OracleSQLPreparedStatement(db.Prepare("SELECT * FROM Persons WHERE Name = :name AND Age >= :age"))
ps.BindType(0, OracleSQLPreparedStatement.SQL_TYPE_STRING)
ps.BindType(1, OracleSQLPreparedStatement.SQL_TYPE_INTEGER)
ps.Bind(0, "John")
ps.Bind(1, 20)
Try
Var rs As RecordSet = ps.SelectSQL
// Use RecordSet as usual
Catch error As DatabaseException
MessageBox(db.ErrorMessage)
Return
End Try
See Also
Database, OracleDatabase, PreparedSQLStatement classes.