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DbServer.Sum Method

Calculate the sum of a series of numeric expressions.

Namespace:  VO
Assembly:  VORDDClasses (in VORDDClasses.dll) Version: 2.5
Syntax
 VIRTUAL METHOD Sum(
	acbExpression AS USUAL,
	cbForBlock AS USUAL,
	cbWhileBlock AS USUAL,
	uScope AS USUAL
) AS USUAL

Parameters

acbExpression
Type: Usual
The single expression that Sum() operates on or the array of expressions that Sum() operates on.
cbForBlock
Type: Usual
The condition evaluated for each record in the scope; if TRUE, the record is included in the processing.  It provides the same functionality as the FOR clause of record processing commands.
cbWhileBlock
Type: Usual
The condition evaluated for each record from the current record until the condition returns FALSE.  It provides the same functionality as the WHILE clause of record processing commands.
uScope
Type: Usual
The range of records to process, providing the same functionality as the ALL, REST and NEXT clauses of record processing commands Value Description DBSCOPEALL The scope is all the records in the table.  This is the default, although if a WHILE condition is specified, the scope becomes DBSCOPEREST. DBSCOPEREST The scope is the remaining records in the table from the current position. <nRecords> The scope is the next <nRecords> records.

Return Value

Type: Usual
An array that contains the sums for each expression or field specified.
Remarks
Sends a NotifyIntentToMove message before the operation. On successful completion, the current record will be the last file record and DBServer:EOF will be TRUE.
Examples
The following example calculates the totals of the salaries, commissions, and withholdings for department 1348:
X#
1aSums := oDB1:Sum({#Salary, #Commission, #Withholdings},{||Department=1348})
2? "Salary:", aSums[1]
3? "Commission:", aSums[2]
4? "Withholdings:", aSums[3]
See Also