ABAP Select data from SAP table /DSD/ME_CUSTOMER_SA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /DSD/ME_CUSTOMER_SA table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /DSD/ME_CUSTOMER_SA. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /DSD/ME_CUSTOMER_SA table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/DSD/ME_CUSTOMER_SA TYPE STANDARD TABLE OF /DSD/ME_CUSTOMER_SA,
      WA_/DSD/ME_CUSTOMER_SA TYPE /DSD/ME_CUSTOMER_SA,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </DSD/ME_CUSTOMER_SA> TYPE /DSD/ME_CUSTOMER_SA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/DSD/ME_CUSTOMER_SA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /DSD/ME_CUSTOMER_SA
  INTO TABLE IT_/DSD/ME_CUSTOMER_SA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/ME_CUSTOMER_SA
*  INTO TABLE @DATA(IT_/DSD/ME_CUSTOMER_SA2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/DSD/ME_CUSTOMER_SA INDEX 1 INTO DATA(WA_/DSD/ME_CUSTOMER_SA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/DSD/ME_CUSTOMER_SA ASSIGNING </DSD/ME_CUSTOMER_SA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/ME_CUSTOMER_SA>-CLIENT = 1.
</DSD/ME_CUSTOMER_SA>-CUST_NO = 1.
</DSD/ME_CUSTOMER_SA>-SALES_ORG = 1.
</DSD/ME_CUSTOMER_SA>-DIST_CHANNEL = 1.
</DSD/ME_CUSTOMER_SA>-DIVISION = 1.

ENDLOOP.

LOOP AT IT_/DSD/ME_CUSTOMER_SA INTO WA_/DSD/ME_CUSTOMER_SA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/ME_CUSTOMER_SA-SOLD_TO_NO, sy-vline,
  WA_/DSD/ME_CUSTOMER_SA-BILL_TO_NO, sy-vline,
  WA_/DSD/ME_CUSTOMER_SA-SHIP_TO_NO, sy-vline,
  WA_/DSD/ME_CUSTOMER_SA-PAYER_NO, sy-vline,
  WA_/DSD/ME_CUSTOMER_SA-CUSTOMER_GROUP1, sy-vline,
  WA_/DSD/ME_CUSTOMER_SA-PYMT_METHOD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/DSD/ME_CUSTOMER_SA you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/DSD/ME_CUSTOMER_SA TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/DSD/ME_CUSTOMER_SA INTO WA_/DSD/ME_CUSTOMER_SA.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field CUST_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/DSD/ME_CUSTOMER_SA-CUST_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/DSD/ME_CUSTOMER_SA-CUST_NO.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/DSD/ME_CUSTOMER_SA_STR, 
CLIENT TYPE STRING,
CUST_NO TYPE STRING,
SALES_ORG TYPE STRING,
DIST_CHANNEL TYPE STRING,
DIVISION TYPE STRING,
SOLD_TO_NO TYPE STRING,
BILL_TO_NO TYPE STRING,
SHIP_TO_NO TYPE STRING,
PAYER_NO TYPE STRING,
CUSTOMER_GROUP1 TYPE STRING,
PYMT_METHOD TYPE STRING,
POD_INV TYPE STRING,
CASH_PAYER TYPE STRING,
CASH_PAYER_AF TYPE STRING,
PAY_CODE TYPE STRING,
EXTFLD7 TYPE STRING,
EXTFLD8 TYPE STRING,
EXTFLD9 TYPE STRING,
EXTFLD10 TYPE STRING,
PRC_LIST TYPE STRING,
PRICE_GROUP TYPE STRING,
CUSTOMER_GROUP TYPE STRING,
TAX_CAT1 TYPE STRING,
TAX_CLASS1 TYPE STRING,
TAX_CAT2 TYPE STRING,
TAX_CLASS2 TYPE STRING,
TAX_CAT3 TYPE STRING,
TAX_CLASS3 TYPE STRING,
CUSTOMER_GROUP2 TYPE STRING,
CUSTOMER_GROUP3 TYPE STRING,
CUSTOMER_GROUP4 TYPE STRING,
CUSTOMER_GROUP5 TYPE STRING,
PLANT TYPE STRING,
INVOICE_PAYER TYPE STRING,
COLLECT_TYPE TYPE STRING,
PAY_TERMS TYPE STRING,
CUST_GROUP_TEXT TYPE STRING,
CUST_GROUP1_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/DSD/ME_CUSTOMER_SA_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/DSD/ME_CUSTOMER_SA_STR-CLIENT sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUST_NO sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-SALES_ORG sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-DIST_CHANNEL sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-DIVISION sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-SOLD_TO_NO sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-BILL_TO_NO sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-SHIP_TO_NO sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PAYER_NO sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUSTOMER_GROUP1 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PYMT_METHOD sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-POD_INV sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CASH_PAYER sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CASH_PAYER_AF sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PAY_CODE sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-EXTFLD7 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-EXTFLD8 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-EXTFLD9 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-EXTFLD10 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PRC_LIST sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PRICE_GROUP sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUSTOMER_GROUP sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-TAX_CAT1 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-TAX_CLASS1 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-TAX_CAT2 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-TAX_CLASS2 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-TAX_CAT3 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-TAX_CLASS3 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUSTOMER_GROUP2 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUSTOMER_GROUP3 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUSTOMER_GROUP4 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUSTOMER_GROUP5 sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PLANT sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-INVOICE_PAYER sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-COLLECT_TYPE sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-PAY_TERMS sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUST_GROUP_TEXT sy-vline 
WA_/DSD/ME_CUSTOMER_SA_STR-CUST_GROUP1_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.