ABAP Select data from SAP table BAPI_ACT_STRUCTURE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_ACT_STRUCTURE
*  INTO TABLE @DATA(IT_BAPI_ACT_STRUCTURE2).
*--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_BAPI_ACT_STRUCTURE INDEX 1 INTO DATA(WA_BAPI_ACT_STRUCTURE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_ACT_STRUCTURE>-NETWORK = 1.
<BAPI_ACT_STRUCTURE>-ACTIVITY_NUMBER = 1.
<BAPI_ACT_STRUCTURE>-CONTROL_KEY = 1.
<BAPI_ACT_STRUCTURE>-WORK_CNTR = 1.
<BAPI_ACT_STRUCTURE>-PLANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_ACT_STRUCTURE-DESCRIPTION, sy-vline,
  WA_BAPI_ACT_STRUCTURE-VENDOR_NO, sy-vline,
  WA_BAPI_ACT_STRUCTURE-PRICE, sy-vline,
  WA_BAPI_ACT_STRUCTURE-PRICE_UNIT, sy-vline,
  WA_BAPI_ACT_STRUCTURE-COST_ELEM, sy-vline,
  WA_BAPI_ACT_STRUCTURE-CURRENCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_ACT_STRUCTURE 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_BAPI_ACT_STRUCTURE 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_BAPI_ACT_STRUCTURE INTO WA_BAPI_ACT_STRUCTURE.


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

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

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

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

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

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-SCOPE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DAUNE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-DAUNE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-DAUNE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DAUME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-DAUME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-DAUME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ARBEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-ARBEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-ARBEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-USE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-USE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field USE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_ACT_STRUCTURE-USE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_ACT_STRUCTURE-USE05.
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_BAPI_ACT_STRUCTURE_STR, 
NETWORK TYPE STRING,
ACTIVITY_NUMBER TYPE STRING,
CONTROL_KEY TYPE STRING,
WORK_CNTR TYPE STRING,
PLANT TYPE STRING,
DESCRIPTION TYPE STRING,
VENDOR_NO TYPE STRING,
PRICE TYPE STRING,
PRICE_UNIT TYPE STRING,
COST_ELEM TYPE STRING,
CURRENCY TYPE STRING,
INFO_REC TYPE STRING,
PURCH_ORG TYPE STRING,
PUR_GRP TYPE STRING,
MATL_GROUP TYPE STRING,
FLEXIBLE_DURATION TYPE STRING,
NUMB_OF_CAPACITIES TYPE STRING,
PERCENT_OF_WORK TYPE STRING,
MILESTONE TYPE STRING,
ACTTYPE TYPE STRING,
ACTIVITY_COSTS TYPE STRING,
PSPID TYPE STRING,
POSID TYPE STRING,
KALID TYPE STRING,
VERTL TYPE STRING,
NPRIO TYPE STRING,
TXJCD TYPE STRING,
SCOPE TYPE STRING,
PRCTR TYPE STRING,
NO_DISP TYPE STRING,
CLASF TYPE STRING,
MEINH TYPE STRING,
PLIFZ TYPE STRING,
DAUNO TYPE STRING,
DAUNE TYPE STRING,
DAUMI TYPE STRING,
DAUME TYPE STRING,
EINSA TYPE STRING,
EINSE TYPE STRING,
ARBEI TYPE STRING,
ARBEH TYPE STRING,
FSAVD TYPE STRING,
FSAVZ TYPE STRING,
FSEDD TYPE STRING,
FSEDZ TYPE STRING,
SSAVD TYPE STRING,
SSAVZ TYPE STRING,
SSEDD TYPE STRING,
SSEDZ TYPE STRING,
PUFFR TYPE STRING,
PUFGS TYPE STRING,
NTANF TYPE STRING,
NTANZ TYPE STRING,
NTEND TYPE STRING,
NTENZ TYPE STRING,
SLWID TYPE STRING,
USR00 TYPE STRING,
USR01 TYPE STRING,
USR02 TYPE STRING,
USR03 TYPE STRING,
USR04 TYPE STRING,
USE04 TYPE STRING,
USR05 TYPE STRING,
USE05 TYPE STRING,
USR06 TYPE STRING,
USE06 TYPE STRING,
USR07 TYPE STRING,
USE07 TYPE STRING,
USR08 TYPE STRING,
USR09 TYPE STRING,
USR10 TYPE STRING,
USR11 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_ACT_STRUCTURE_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_BAPI_ACT_STRUCTURE_STR-NETWORK sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-ACTIVITY_NUMBER sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-CONTROL_KEY sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-WORK_CNTR sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PLANT sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-DESCRIPTION sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-VENDOR_NO sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PRICE sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PRICE_UNIT sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-COST_ELEM sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-CURRENCY sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-INFO_REC sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PURCH_ORG sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PUR_GRP sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-MATL_GROUP sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-FLEXIBLE_DURATION sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NUMB_OF_CAPACITIES sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PERCENT_OF_WORK sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-MILESTONE sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-ACTTYPE sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-ACTIVITY_COSTS sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PSPID sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-POSID sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-KALID sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-VERTL sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NPRIO sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-TXJCD sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-SCOPE sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PRCTR sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NO_DISP sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-CLASF sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-MEINH sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PLIFZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-DAUNO sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-DAUNE sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-DAUMI sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-DAUME sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-EINSA sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-EINSE sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-ARBEI sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-ARBEH sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-FSAVD sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-FSAVZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-FSEDD sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-FSEDZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-SSAVD sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-SSAVZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-SSEDD sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-SSEDZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PUFFR sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-PUFGS sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NTANF sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NTANZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NTEND sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-NTENZ sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-SLWID sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR00 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR01 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR02 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR03 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR04 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USE04 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR05 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USE05 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR06 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USE06 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR07 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USE07 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR08 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR09 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR10 sy-vline 
WA_BAPI_ACT_STRUCTURE_STR-USR11 sy-vline      INTO ld_text SEPARATED BY SPACE.

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