This type is used for the TDAScript.BeforeExecute event. 
Unit
DAScript
 Syntax
TBeforeStatementExecuteEvent = procedure (Sender: TObject; var SQL: string; var Omit: boolean) of object;
Parameters
Sender
An object that raised the event. 
SQL
Holds the passed SQL statement. 
Omit
True, if the statement execution should be skipped.