如何選擇正確的讀取SD的資料表，提高程式效能

SD Table Access – SAP Note 185530

Read SAP Note 185530 before developing new SD report or if your SD report is running slow.

1. Accesses to sales orders (tables VBAK, VBAP)

Search orders for customer number (field VBAK-KUNNR)
If you want to look for sales order for a customer do not directly select from VBAK, instead first select on VAKPA and then based on what sales order you get execute second select in VBAK to get additional data.

Incorrect	SELECT FROM vbak WHERE kunnr = …
Correct	SELECT FROM vakpa WHERE kunde = … SELECT FROM vbak WHERE vbeln = vakpa-vbeln.

Search order items for material number (field VBAP-MATNR)
To search for sales order line for particular material select from table VAPMA first and then go to VBAP table for more information.

Incorrect	SELECT FROM vbap WHERE matnr = …
Correct	SELECT FROM vapma WHERE matnr = … SELECT FROM vbap WHERE vbeln = vapma-vbeln AND posnr = vapma-posnr

Use search help views defined for Sales Order
Other search helps for sales orders offer the matchcode tables and views M_VMVAx, x. = A, B, C, … M; for example search for purchase order number of the customer, description and so on.

View Name	Search Fields
M_VMVAA	Customer PO number
M_VMVAE	Partner number (KUNNR, LIFNR, or PERNR)
M_VMVAL	Sales Org, Sold-to party
M_VMVAO	Sold-to party

2. Accesses to deliveries (tables LIKP, LIPS)

Search for deliveries with customer number (field LIKP-KUNNR)

 

Incorrect	SELECT FROM likp WHERE kunnr = …
Correct	SELECT FROM vlkpa WHERE kunde = … SELECT FROM likp WHERE vbeln = vlkpa-vbeln.

Search for delivery items with material number (field LIKP-MATNR)

 

Incorrect	SELECT FROM lips WHERE matnr = …
Correct	SELECT FROM vlpma WHERE matnr = … SELECT FROM lips WHERE vbeln = vlpma-vbeln AND posnr = vlpma-posnr

Search for deliveries with sales order number (preceding document, field LIPS-VGBEL)

 

Incorrect	SELECT FROM lips WHERE vgbel = …
Correct	SELECT FROM vbfa WHERE VBELV = … and VBTYP_N = ‘J’ SELECT FROM lips WHERE vbeln = vbfa-vbeln AND posnr = vbfa-posnn

Use search help views defined for Delivery
Other search helps for deliveries offer matchcode tables and views M_VMVLx, x. = A, B, C, … M; for example search for goods issue date, picking date, transportation planning date and so on.

3. Accesses to invoices (tables VBRK, VBRP)

Search for invoices with customer number (“payer”) (field VBRK-KUNRG)

 

Incorrect	SELECT FROM vbrk WHERE kunrg = …
Correct	SELECT FROM vrkpa WHERE kunde = … SELECT FROM vbrk WHERE vbeln = vrkpa-vbeln

Search for invoice items with material number (field VBRP-MATNR)

 

Incorrect	SELECT FROM vbrp WHERE matnr = …
Correct	SELECT FROM vrpma WHERE matnr = … SELECT FROM vbrp WHERE vbeln = vrpma-vbeln AND posnr = vrpma-posnr

Search for invoices with delivery number (preceding document, field VBRP-VGBEL)

 

Incorrect	SELECT FROM vbrp WHERE vgbel = …
Correct	SELECT FROM vbfa WHERE vbtyp_n = ‘M’ AND vbelv = … SELECT FROM vbrp WHERE vbeln = vbfa-vbeln AND posnr = vbfa-posnn

Search for invoices with order number (preceding document, field VBRP-AUBEL)

 

Incorrect	SELECT FROM vbrp WHERE aubel = …
Correct	SELECT FROM vbfa WHERE vbtyp_n = ‘M’ AND vbelv = … SELECT FROM vbrp WHERE vbeln = vbfa-vbeln AND posnr = vbfa-posnn

4. Other accesses in SD

Document flow
In table VBFA only the preceeding document is used to search for the subsequent document (for example, delivery for order). Searching the other way makes no sense with this table since the preceding documents (for example, order for delivery) are stored directly in the document tables. Thus reading in table VBFA is a one-way street.

 

Incorrect	SELECT vbelv FROM vbfa WHERE vbeln …
Correct	SELECT vgbel FROM lips WHERE vbeln = …; or SELECT vgbel FROM vbrp WHERE vbeln = …; or SELECT aubel FROM vbrp WHERE vbeln = …

Search for shipping unit item with delivery

 

Incorrect	SELECT FROM vepo WHERE vbtyp = ‘J’ AND vbeln = i_lips-vbeln
Correct	SELECT FROM vbfa WHERE vbtyp_n = ‘X’ AND vbelv = i_lips-vbeln SELECT FROM vepo WHERE venum = vbfa-vbeln

Link to SAP Note 185530