ABAP Select data from SAP table AFO_POS3DERI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP AFO_POS3DERI 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 AFO_POS3DERI. 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 AFO_POS3DERI 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_AFO_POS3DERI TYPE STANDARD TABLE OF AFO_POS3DERI,
      WA_AFO_POS3DERI TYPE AFO_POS3DERI,
      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: <AFO_POS3DERI> TYPE AFO_POS3DERI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_AFO_POS3DERI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM AFO_POS3DERI
  INTO TABLE IT_AFO_POS3DERI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFO_POS3DERI
*  INTO TABLE @DATA(IT_AFO_POS3DERI2).
*--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_AFO_POS3DERI INDEX 1 INTO DATA(WA_AFO_POS3DERI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_AFO_POS3DERI ASSIGNING <AFO_POS3DERI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFO_POS3DERI>-BUKRS = 1.
<AFO_POS3DERI>-CLASS_ID = 1.
<AFO_POS3DERI>-POS_ACCOUNT = 1.
<AFO_POS3DERI>-POSITION_CURR = 1.
<AFO_POS3DERI>-POS_ACC_BANK = 1.

ENDLOOP.

LOOP AT IT_AFO_POS3DERI INTO WA_AFO_POS3DERI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFO_POS3DERI-RBEAR, sy-vline,
  WA_AFO_POS3DERI-RBHER, sy-vline,
  WA_AFO_POS3DERI-SANLF, sy-vline,
  WA_AFO_POS3DERI-SSTATI, sy-vline,
  WA_AFO_POS3DERI-GSART, sy-vline,
  WA_AFO_POS3DERI-SBRSCH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFO_POS3DERI 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_AFO_POS3DERI 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_AFO_POS3DERI INTO WA_AFO_POS3DERI.


*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 CLASS_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFO_POS3DERI-CLASS_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFO_POS3DERI-CLASS_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field POS_ACC_BANK
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFO_POS3DERI-POS_ACC_BANK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFO_POS3DERI-POS_ACC_BANK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOTGEN_DEALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFO_POS3DERI-LOTGEN_DEALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFO_POS3DERI-LOTGEN_DEALNR.
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_AFO_POS3DERI_STR, 
BUKRS TYPE STRING,
CLASS_ID TYPE STRING,
POS_ACCOUNT TYPE STRING,
POSITION_CURR TYPE STRING,
POS_ACC_BANK TYPE STRING,
RBEAR TYPE STRING,
RBHER TYPE STRING,
SANLF TYPE STRING,
SSTATI TYPE STRING,
GSART TYPE STRING,
SBRSCH TYPE STRING,
SWERTTYP TYPE STRING,
SBOERNOT TYPE STRING,
XALKZ TYPE STRING,
REWHR TYPE STRING,
SNOTI TYPE STRING,
SROLEXT TYPE STRING,
SMOVERW TYPE STRING,
INSTITUTE TYPE STRING,
RATING TYPE STRING,
LOT_ID TYPE STRING,
LOTGEN_DEALNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFO_POS3DERI_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_AFO_POS3DERI_STR-BUKRS sy-vline 
WA_AFO_POS3DERI_STR-CLASS_ID sy-vline 
WA_AFO_POS3DERI_STR-POS_ACCOUNT sy-vline 
WA_AFO_POS3DERI_STR-POSITION_CURR sy-vline 
WA_AFO_POS3DERI_STR-POS_ACC_BANK sy-vline 
WA_AFO_POS3DERI_STR-RBEAR sy-vline 
WA_AFO_POS3DERI_STR-RBHER sy-vline 
WA_AFO_POS3DERI_STR-SANLF sy-vline 
WA_AFO_POS3DERI_STR-SSTATI sy-vline 
WA_AFO_POS3DERI_STR-GSART sy-vline 
WA_AFO_POS3DERI_STR-SBRSCH sy-vline 
WA_AFO_POS3DERI_STR-SWERTTYP sy-vline 
WA_AFO_POS3DERI_STR-SBOERNOT sy-vline 
WA_AFO_POS3DERI_STR-XALKZ sy-vline 
WA_AFO_POS3DERI_STR-REWHR sy-vline 
WA_AFO_POS3DERI_STR-SNOTI sy-vline 
WA_AFO_POS3DERI_STR-SROLEXT sy-vline 
WA_AFO_POS3DERI_STR-SMOVERW sy-vline 
WA_AFO_POS3DERI_STR-INSTITUTE sy-vline 
WA_AFO_POS3DERI_STR-RATING sy-vline 
WA_AFO_POS3DERI_STR-LOT_ID sy-vline 
WA_AFO_POS3DERI_STR-LOTGEN_DEALNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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