ABAP Select data from SAP table ASSOB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ASSOB
*  INTO TABLE @DATA(IT_ASSOB2).
*--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_ASSOB INDEX 1 INTO DATA(WA_ASSOB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ASSOB>-MANDT = 1.
<ASSOB>-PDSNR = 1.
<ASSOB>-PERNR = 1.
<ASSOB>-BUKRS = 1.
<ASSOB>-GSBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ASSOB-KOKRS, sy-vline,
  WA_ASSOB-KOSTL, sy-vline,
  WA_ASSOB-AUFNR, sy-vline,
  WA_ASSOB-KSTRG, sy-vline,
  WA_ASSOB-POSNR, sy-vline,
  WA_ASSOB-NPLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ASSOB 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_ASSOB 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_ASSOB INTO WA_ASSOB.


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

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

*Conversion exit ABPSP, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ASSOB-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASSOB-POSNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_ASSOB-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASSOB-VORNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_ASSOB-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASSOB-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit FMCIL, internal->external for field FIPEX
CALL FUNCTION 'CONVERSION_EXIT_FMCIL_OUTPUT'
  EXPORTING
    input =                      WA_ASSOB-FIPEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASSOB-FIPEX.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field SSEGMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ASSOB-SSEGMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ASSOB-SSEGMENT.
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_ASSOB_STR, 
MANDT TYPE STRING,
PDSNR TYPE STRING,
PERNR TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
KSTRG TYPE STRING,
POSNR TYPE STRING,
NPLNR TYPE STRING,
VORNR TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PAOBJNR TYPE STRING,
PRZNR TYPE STRING,
FISTL TYPE STRING,
FIPOS TYPE STRING,
GEBER TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LSTNR TYPE STRING,
LTLST TYPE STRING,
SBUKR TYPE STRING,
SGSBR TYPE STRING,
SKOST TYPE STRING,
LSTAR TYPE STRING,
EXBEL TYPE STRING,
MWSKZ TYPE STRING,
OTYPE TYPE STRING,
STELL TYPE STRING,
POHRS TYPE STRING,
DART TYPE STRING,
UDART TYPE STRING,
SGTXT TYPE STRING,
TXJCD TYPE STRING,
FIPEX TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
SGEBER TYPE STRING,
SFKBER TYPE STRING,
SGRANT_NBR TYPE STRING,
SEGMENT TYPE STRING,
SSEGMENT TYPE STRING,
BUDGET_PD TYPE STRING,
SBUDGET_PD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ASSOB_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_ASSOB_STR-MANDT sy-vline 
WA_ASSOB_STR-PDSNR sy-vline 
WA_ASSOB_STR-PERNR sy-vline 
WA_ASSOB_STR-BUKRS sy-vline 
WA_ASSOB_STR-GSBER sy-vline 
WA_ASSOB_STR-KOKRS sy-vline 
WA_ASSOB_STR-KOSTL sy-vline 
WA_ASSOB_STR-AUFNR sy-vline 
WA_ASSOB_STR-KSTRG sy-vline 
WA_ASSOB_STR-POSNR sy-vline 
WA_ASSOB_STR-NPLNR sy-vline 
WA_ASSOB_STR-VORNR sy-vline 
WA_ASSOB_STR-KDAUF sy-vline 
WA_ASSOB_STR-KDPOS sy-vline 
WA_ASSOB_STR-PAOBJNR sy-vline 
WA_ASSOB_STR-PRZNR sy-vline 
WA_ASSOB_STR-FISTL sy-vline 
WA_ASSOB_STR-FIPOS sy-vline 
WA_ASSOB_STR-GEBER sy-vline 
WA_ASSOB_STR-EBELN sy-vline 
WA_ASSOB_STR-EBELP sy-vline 
WA_ASSOB_STR-LSTNR sy-vline 
WA_ASSOB_STR-LTLST sy-vline 
WA_ASSOB_STR-SBUKR sy-vline 
WA_ASSOB_STR-SGSBR sy-vline 
WA_ASSOB_STR-SKOST sy-vline 
WA_ASSOB_STR-LSTAR sy-vline 
WA_ASSOB_STR-EXBEL sy-vline 
WA_ASSOB_STR-MWSKZ sy-vline 
WA_ASSOB_STR-OTYPE sy-vline 
WA_ASSOB_STR-STELL sy-vline 
WA_ASSOB_STR-POHRS sy-vline 
WA_ASSOB_STR-DART sy-vline 
WA_ASSOB_STR-UDART sy-vline 
WA_ASSOB_STR-SGTXT sy-vline 
WA_ASSOB_STR-TXJCD sy-vline 
WA_ASSOB_STR-FIPEX sy-vline 
WA_ASSOB_STR-FKBER sy-vline 
WA_ASSOB_STR-GRANT_NBR sy-vline 
WA_ASSOB_STR-SGEBER sy-vline 
WA_ASSOB_STR-SFKBER sy-vline 
WA_ASSOB_STR-SGRANT_NBR sy-vline 
WA_ASSOB_STR-SEGMENT sy-vline 
WA_ASSOB_STR-SSEGMENT sy-vline 
WA_ASSOB_STR-BUDGET_PD sy-vline 
WA_ASSOB_STR-SBUDGET_PD sy-vline      INTO ld_text SEPARATED BY SPACE.

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