ABAP Select data from SAP table RGPSA_COST_ADJUSTMENT_REV_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGPSA_COST_ADJUSTMENT_REV_ALV
*  INTO TABLE @DATA(IT_RGPSA_COST_ADJUSTMENT_REV_ALV2).
*--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_RGPSA_COST_ADJUSTMENT_REV_ALV INDEX 1 INTO DATA(WA_RGPSA_COST_ADJUSTMENT_REV_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGPSA_COST_ADJUSTMENT_REV_ALV>-DOCNR = 1.
<RGPSA_COST_ADJUSTMENT_REV_ALV>-DOCLN = 1.
<RGPSA_COST_ADJUSTMENT_REV_ALV>-PSC_YEAR = 1.
<RGPSA_COST_ADJUSTMENT_REV_ALV>-POPER = 1.
<RGPSA_COST_ADJUSTMENT_REV_ALV>-RBUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGPSA_COST_ADJUSTMENT_REV_ALV-RPSC_NAME, sy-vline,
  WA_RGPSA_COST_ADJUSTMENT_REV_ALV-RPSC_PRODUCT, sy-vline,
  WA_RGPSA_COST_ADJUSTMENT_REV_ALV-RJVNAM, sy-vline,
  WA_RGPSA_COST_ADJUSTMENT_REV_ALV-REGROU, sy-vline,
  WA_RGPSA_COST_ADJUSTMENT_REV_ALV-RPSC_CALC_TYPE, sy-vline,
  WA_RGPSA_COST_ADJUSTMENT_REV_ALV-RPARTN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGPSA_COST_ADJUSTMENT_REV_ALV 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_RGPSA_COST_ADJUSTMENT_REV_ALV 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_RGPSA_COST_ADJUSTMENT_REV_ALV INTO WA_RGPSA_COST_ADJUSTMENT_REV_ALV.


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

*Conversion exit GJAHR, internal->external for field PSC_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RGPSA_COST_ADJUSTMENT_REV_ALV-PSC_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPSA_COST_ADJUSTMENT_REV_ALV-PSC_YEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field PARTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RGPSA_COST_ADJUSTMENT_REV_ALV-PARTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGPSA_COST_ADJUSTMENT_REV_ALV-PARTN.
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_RGPSA_COST_ADJUSTMENT_REV_ALV_STR, 
DOCNR TYPE STRING,
DOCLN TYPE STRING,
PSC_YEAR TYPE STRING,
POPER TYPE STRING,
RBUKRS TYPE STRING,
RPSC_NAME TYPE STRING,
RPSC_PRODUCT TYPE STRING,
RJVNAM TYPE STRING,
REGROU TYPE STRING,
RPSC_CALC_TYPE TYPE STRING,
RPARTN TYPE STRING,
RTCUR TYPE STRING,
TSL TYPE STRING,
PARTN TYPE STRING,
REASON_CODE TYPE STRING,
ADJ_VOLUME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGPSA_COST_ADJUSTMENT_REV_ALV_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_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-DOCNR sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-DOCLN sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-PSC_YEAR sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-POPER sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RBUKRS sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RPSC_NAME sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RPSC_PRODUCT sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RJVNAM sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-REGROU sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RPSC_CALC_TYPE sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RPARTN sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-RTCUR sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-TSL sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-PARTN sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-REASON_CODE sy-vline 
WA_RGPSA_COST_ADJUSTMENT_REV_ALV_STR-ADJ_VOLUME sy-vline      INTO ld_text SEPARATED BY SPACE.

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