AEXECUTE

Description

This function will queue up a query and run it asynchronously in a background thread (rather than the script waiting for it to complete like the EXECUTE function). Once the query has been executed, a specified callback function will run.

Note 1: An open database connection is required for this function to work correctly. See the CONNECT function for information regarding the opening of a database connection.

Note 2: The AEXECUTE and EXECUTE functions are intended to run SQL commands that do not return any results (such as DELETE or UPDATE). For commands that return results (that you want to then read back) see the AQUERY and QUERY functions.

Valid for the following objects:

• Database

Syntax

AEXECUTE function, command

Argument	Type	Description
function	string	A script function to call when the command has been executed. Argument Description ARGN1 The type of command (0 = AEXECUTE, 1 = AQUERY) ARGN2 0 = Command failed, 1 = Command succeeded. ARGS The command that was executed.
command	string	The SQL command to execute.

Return Values

This function returns one of two values when executed. See the table below for the meanings of the return values:

Return Value	Description
0	Command has not been successfully queued.
1	Command has been successfully queued.

Examples

//
// Queues up an SQL command.
//
[FUNCTION f_execute]
SERV.LOG Deleting all rows from table 'tbl_name'.
IF (<DB.AEXECUTE f_execute_callback, DELETE FROM tbl_name> == 0)
    SERV.LOG Failed to queue command.
ELSE
    SERV.LOG Command queued.
ENDIF
RETURN

//
// This function will be called when the query has been executed.
//
[FUNCTION f_execute_callback]
IF (<ARGN2> == 0)
    SERV.LOG The command failed to execute. (<ARGS>)
ELSE
    SERV.LOG The command succeeded. (<ARGS>)
ENDIF
RETURN