Autor Tema: Performance en Acceso a Tablas de SD  (Leído 836 veces)

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Desconectado Enrique.Borroni

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Performance en Acceso a Tablas de SD
« en: 30 de Septiembre de 2016, 05:50:53 pm »
Hace un tiempo buscando mejorar el acceso a las tablas de SD encontre esto...Ojala les sirva.

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

a) Search orders for customer number (field VBAK-KUNNR):

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


b) Search order items for material number (field VBAP-MATNR):

*Incorrect:
SELECT FROM vbap WHERE matnr = ...
*Correct:   
SELECT FROM vapma WHERE matnr = ...   
SELECT FROM vbap WHERE vbeln = vapma-vbeln
                   AND posnr = vapma-posnr



c) 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

2. Accesses to deliveries (tables LIKP, LIPS)

a) 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.


b) 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



c) 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



d) 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)

a) 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



b) 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



c) 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



d) 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:

a) Document flow:
*Incorrect:
SELECT vbelv FROM vbfa WHERE vbeln ...


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.

*Correct:
SELECT vgbel FROM lips WHERE vbeln = ...
or
SELECT vgbel FROM vbrp WHERE vbeln = ...
or
SELECT aubel FROM vbrp WHERE vbeln = ...


b) 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
Saludos.

Atte.,
Enrique Borroni

maito : enrique.borroni@abap.es