ABAP Select data from SAP table /IAM/S_I_ACT_PROPOSAL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /IAM/S_I_ACT_PROPOSAL 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 /IAM/S_I_ACT_PROPOSAL. 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 /IAM/S_I_ACT_PROPOSAL 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_/IAM/S_I_ACT_PROPOSAL TYPE STANDARD TABLE OF /IAM/S_I_ACT_PROPOSAL,
      WA_/IAM/S_I_ACT_PROPOSAL TYPE /IAM/S_I_ACT_PROPOSAL,
      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: </IAM/S_I_ACT_PROPOSAL> TYPE /IAM/S_I_ACT_PROPOSAL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /IAM/S_I_ACT_PROPOSAL
*  INTO TABLE @DATA(IT_/IAM/S_I_ACT_PROPOSAL2).
*--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_/IAM/S_I_ACT_PROPOSAL INDEX 1 INTO DATA(WA_/IAM/S_I_ACT_PROPOSAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</IAM/S_I_ACT_PROPOSAL>-KEY = 1.
</IAM/S_I_ACT_PROPOSAL>-PARENT_KEY = 1.
</IAM/S_I_ACT_PROPOSAL>-ROOT_KEY = 1.
</IAM/S_I_ACT_PROPOSAL>-ACT_TEMPLATE_CD = 1.
</IAM/S_I_ACT_PROPOSAL>-ACT_CATEGORY_CD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/IAM/S_I_ACT_PROPOSAL-ACT_TYPE_CD, sy-vline,
  WA_/IAM/S_I_ACT_PROPOSAL-ACT_ORIGIN, sy-vline,
  WA_/IAM/S_I_ACT_PROPOSAL-MANDATORY, sy-vline,
  WA_/IAM/S_I_ACT_PROPOSAL-AUTH_GROUP, sy-vline,
  WA_/IAM/S_I_ACT_PROPOSAL-CODE, sy-vline,
  WA_/IAM/S_I_ACT_PROPOSAL-DURATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/IAM/S_I_ACT_PROPOSAL 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_/IAM/S_I_ACT_PROPOSAL 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_/IAM/S_I_ACT_PROPOSAL INTO WA_/IAM/S_I_ACT_PROPOSAL.


*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 CODE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IAM/S_I_ACT_PROPOSAL-CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IAM/S_I_ACT_PROPOSAL-CODE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ALTERNATIVE_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/IAM/S_I_ACT_PROPOSAL-ALTERNATIVE_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/IAM/S_I_ACT_PROPOSAL-ALTERNATIVE_ID.
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_/IAM/S_I_ACT_PROPOSAL_STR, 
KEY TYPE STRING,
PARENT_KEY TYPE STRING,
ROOT_KEY TYPE STRING,
ACT_TEMPLATE_CD TYPE STRING,
ACT_CATEGORY_CD TYPE STRING,
ACT_TYPE_CD TYPE STRING,
ACT_ORIGIN TYPE STRING,
MANDATORY TYPE STRING,
AUTH_GROUP TYPE STRING,
CODE TYPE STRING,
DURATION TYPE STRING,
DURATION_UNIT TYPE STRING,
NUM_OF_SUBACT TYPE STRING,
SORTNO TYPE STRING,
PROPOSAL_IND TYPE STRING,
TRANSFERRED TYPE STRING,
ACT_TEMPLATE_DESCR TYPE STRING,
ACT_TYPE_DESCR TYPE STRING,
ACT_CATEGORY_DESCR TYPE STRING,
CODE_TXT TYPE STRING,
ACT_ORIGIN_DESCR TYPE STRING,
PAR_ACT_PROPOSAL_UUID TYPE STRING,
PAR_ACT_UUID TYPE STRING,
PHASE TYPE STRING,
I_ACT_PROPOSAL TYPE STRING,
ALTERNATIVE_ID TYPE STRING,
ALTERNATIVE_KEY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/IAM/S_I_ACT_PROPOSAL_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_/IAM/S_I_ACT_PROPOSAL_STR-KEY sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-PARENT_KEY sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ROOT_KEY sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_TEMPLATE_CD sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_CATEGORY_CD sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_TYPE_CD sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_ORIGIN sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-MANDATORY sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-AUTH_GROUP sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-CODE sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-DURATION sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-DURATION_UNIT sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-NUM_OF_SUBACT sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-SORTNO sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-PROPOSAL_IND sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-TRANSFERRED sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_TEMPLATE_DESCR sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_TYPE_DESCR sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_CATEGORY_DESCR sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-CODE_TXT sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ACT_ORIGIN_DESCR sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-PAR_ACT_PROPOSAL_UUID sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-PAR_ACT_UUID sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-PHASE sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-I_ACT_PROPOSAL sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ALTERNATIVE_ID sy-vline 
WA_/IAM/S_I_ACT_PROPOSAL_STR-ALTERNATIVE_KEY sy-vline      INTO ld_text SEPARATED BY SPACE.

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