Updates the rows specified in RestOfUpdateStatement.
UPDATE TableName RestOfUpdateStatement {USING TransactionObject} ;
Parameter |
Description |
|---|---|
TableName |
The name of the table in which you want to update rows. |
RestOfUpdateStatement |
The rest of the UPDATE statement (the SET and WHERE clauses). |
TransactionObject |
The name of the transaction object that identifies the database containing the table. This clause is required only for transaction objects other than the default (SQLCA). |
Error handling
It is good practice to test the success/failure code
after executing a UPDATE statement. You can test SQLCode for a failure code.
However, if nothing matches the WHERE clause
and no rows are updated, SQLCode is
still set to zero. To make sure the update affected at least one
row, check the SQLNRows property
of the transaction object.
These statements update rows from the Employee table in the database specified in the transaction object named Emp_tran, where Emp_num is equal to the value entered in the SingleLineEdit sle_Number:
int Emp_num
Emp_num=Integer(sle_Number.Text )
UPDATE Employee
SET emp_name = :sle_Name.Text
WHERE Employee.emp_num = :Emp_num
USING Emp_tran ;
IF Emptran.SQLNRows > 0 THEN
COMMIT USING Emp_tran ;
END IF
The integer Emp_num and the SingleLineEdit sle_name require a colon to indicate they are host (PowerScript) variables when you use them in an UPDATE statement.
