Proyek Queri-queri Lanjut dan Sub-subqueri

Proyek Queri-queri Lanjut dan Sub-subqueri

Variables dan Data

Integer

• 2 bytes• -32768 32767

Long

• 4 bytes• +/- 2,147,483,648

Single

• 4 bytes• +/- 3.402823 E38• +/- 1.401298 E-45

Double

• 8 bytes• +/- 1.79769313386232 E-308• +/- 4.94065645841247 E-324

Currency

• 8 bytes• +/- 922,337,203,685,477.5808

Variant

• Any data Type• Null

Fungsi-fungsi Internal standar

Fungsi String

• LCase, UCase• Format• StrComp• Len• InStr

• Chr, Asc• String• Trim, LTrim, RTrim• Left, Right, Mid• & Concatenation

Len

• Len"Ramanujan") = 9

InStr

• ("8764 main"," ") = 5

String

• String(5, "a") = "aaaaa"

Trim, LTrim, RTrim

• Trim(" Maria ") = "Maria"

Left, Right, Mid

• Left("jackson",5) = "Jacks"

& Concatenation

• "Frank" & "Rose = "FrankRose"

Fungsi Matematis Standar

• Numeric

Numeric

• Exp, Log• Atn, Cos, Sin, Tan• Sqr• Abs• Sgn• Int, Fix• Rnd, Randomize

Conditions

Basic Conditions

• If (conditiona1) Then statement for true• Else• Statement for false If (condition2) Then statements for

true• End If• End If

Nested Conditions

• Response = MsgBox ( . . .) If (response = vbYes) Then 'statements for Yes

• Else• If (response = vbNo) Then 'statements for No• Else• 'statements for Cancel End If• End If

Pernyataan Select

• Response = MsgBox( . . . ) Select Case response case vbYes

• 'statements for Yes Case vbNo• 'statements for No Case vbCancel• 'statements for cancel End Case

Loops

Input dan Output

Subroutines

Subroutine StatusMessage dapat dipanggil dari lokasi mana saja.

• Main program ... StatusMessage "trying to connect." ... StatusMessage "verifying access." ... End main program Sub StatusMessage (Msg As String) 'Display Msg, location, color End Sub

Komputasi

Variable Scope

Form

• Button1• Button2

Form-Module Code

• Sub Button1_Click()• Dim I1 As Integer• I1 = 3• End Sub• Sub Button2_Click()• Dim i1 As Integer• I1 = 7• End Sub

Proyek Queri-queri Lanjut dan Sub-subqueri