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Oracle Forms Developer – Form Builder Reference, Volume 1

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Pre-Select trigger<br />

Description<br />

Fires during Execute Query and Count Query processing, after <strong>Form</strong> <strong>Builder</strong> constructs the SELECT<br />

statement to be issued, but before the statement is actually issued. Note that the SELECT statement can<br />

be examined in a Pre-Select trigger by reading the value of the system variable<br />

SYSTEM.LAST_QUERY .<br />

Definition Level form or block<br />

Legal Commands<br />

SELECT statements, unrestricted built-ins<br />

Enter Query Mode no<br />

Usage Notes<br />

Use a Pre-Select trigger to prepare a query prior to execution against a non-ORACLE data source.<br />

On Failure<br />

No effect. The current query fetched no records from the table. The table is empty, or it contains no<br />

records that meet the query’s search criteria.<br />

Fires In<br />

EXECUTE_QUERY<br />

Open the Query<br />

Prepare the Query<br />

See Process Flowcharts<br />

490

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