ABAP Select data from SAP table RPTESTCRP_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPTESTCRP_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 RPTESTCRP_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 RPTESTCRP_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_RPTESTCRP_ALV TYPE STANDARD TABLE OF RPTESTCRP_ALV,
      WA_RPTESTCRP_ALV TYPE RPTESTCRP_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: <RPTESTCRP_ALV> TYPE RPTESTCRP_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPTESTCRP_ALV
*  INTO TABLE @DATA(IT_RPTESTCRP_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_RPTESTCRP_ALV INDEX 1 INTO DATA(WA_RPTESTCRP_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPTESTCRP_ALV>-AUTCD = 1.
<RPTESTCRP_ALV>-RESCD = 1.
<RPTESTCRP_ALV>-TAXTY = 1.
<RPTESTCRP_ALV>-RECFOR = 1.
<RPTESTCRP_ALV>-FORNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPTESTCRP_ALV-TXEXIND, sy-vline,
  WA_RPTESTCRP_ALV-RPART, sy-vline,
  WA_RPTESTCRP_ALV-CERCD, sy-vline,
  WA_RPTESTCRP_ALV-PYPRWA, sy-vline,
  WA_RPTESTCRP_ALV-PAPERW, sy-vline,
  WA_RPTESTCRP_ALV-YTDWA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPTESTCRP_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_RPTESTCRP_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_RPTESTCRP_ALV INTO WA_RPTESTCRP_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RPTESTCRP_ALV_STR, 
AUTCD TYPE STRING,
RESCD TYPE STRING,
TAXTY TYPE STRING,
RECFOR TYPE STRING,
FORNUM TYPE STRING,
TXEXIND TYPE STRING,
RPART TYPE STRING,
CERCD TYPE STRING,
PYPRWA TYPE STRING,
PAPERW TYPE STRING,
YTDWA TYPE STRING,
YTDTX TYPE STRING,
ROUND TYPE STRING,
MARST TYPE STRING,
REGEX TYPE STRING,
REGEXA TYPE STRING,
PERSEX TYPE STRING,
DEPEEX TYPE STRING,
ADDEX TYPE STRING,
ADDEXA TYPE STRING,
SUPCO TYPE STRING,
BESWA TYPE STRING,
ADDTAX TYPE STRING,
ADDTAXR TYPE STRING,
ADDAMU TYPE STRING,
EICSTA TYPE STRING,
PAYPTX TYPE STRING,
MTDWA TYPE STRING,
PEWO TYPE STRING,
RTXCRM TYPE STRING,
EXPERT TYPE STRING,
MAXWA TYPE STRING,
SEADJ TYPE STRING,
CALTA TYPE STRING,
TAXWA TYPE STRING,
TOTWA TYPE STRING,
TARATE TYPE STRING,
TAXEX TYPE STRING,
CALST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPTESTCRP_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_RPTESTCRP_ALV_STR-AUTCD sy-vline 
WA_RPTESTCRP_ALV_STR-RESCD sy-vline 
WA_RPTESTCRP_ALV_STR-TAXTY sy-vline 
WA_RPTESTCRP_ALV_STR-RECFOR sy-vline 
WA_RPTESTCRP_ALV_STR-FORNUM sy-vline 
WA_RPTESTCRP_ALV_STR-TXEXIND sy-vline 
WA_RPTESTCRP_ALV_STR-RPART sy-vline 
WA_RPTESTCRP_ALV_STR-CERCD sy-vline 
WA_RPTESTCRP_ALV_STR-PYPRWA sy-vline 
WA_RPTESTCRP_ALV_STR-PAPERW sy-vline 
WA_RPTESTCRP_ALV_STR-YTDWA sy-vline 
WA_RPTESTCRP_ALV_STR-YTDTX sy-vline 
WA_RPTESTCRP_ALV_STR-ROUND sy-vline 
WA_RPTESTCRP_ALV_STR-MARST sy-vline 
WA_RPTESTCRP_ALV_STR-REGEX sy-vline 
WA_RPTESTCRP_ALV_STR-REGEXA sy-vline 
WA_RPTESTCRP_ALV_STR-PERSEX sy-vline 
WA_RPTESTCRP_ALV_STR-DEPEEX sy-vline 
WA_RPTESTCRP_ALV_STR-ADDEX sy-vline 
WA_RPTESTCRP_ALV_STR-ADDEXA sy-vline 
WA_RPTESTCRP_ALV_STR-SUPCO sy-vline 
WA_RPTESTCRP_ALV_STR-BESWA sy-vline 
WA_RPTESTCRP_ALV_STR-ADDTAX sy-vline 
WA_RPTESTCRP_ALV_STR-ADDTAXR sy-vline 
WA_RPTESTCRP_ALV_STR-ADDAMU sy-vline 
WA_RPTESTCRP_ALV_STR-EICSTA sy-vline 
WA_RPTESTCRP_ALV_STR-PAYPTX sy-vline 
WA_RPTESTCRP_ALV_STR-MTDWA sy-vline 
WA_RPTESTCRP_ALV_STR-PEWO sy-vline 
WA_RPTESTCRP_ALV_STR-RTXCRM sy-vline 
WA_RPTESTCRP_ALV_STR-EXPERT sy-vline 
WA_RPTESTCRP_ALV_STR-MAXWA sy-vline 
WA_RPTESTCRP_ALV_STR-SEADJ sy-vline 
WA_RPTESTCRP_ALV_STR-CALTA sy-vline 
WA_RPTESTCRP_ALV_STR-TAXWA sy-vline 
WA_RPTESTCRP_ALV_STR-TOTWA sy-vline 
WA_RPTESTCRP_ALV_STR-TARATE sy-vline 
WA_RPTESTCRP_ALV_STR-TAXEX sy-vline 
WA_RPTESTCRP_ALV_STR-CALST sy-vline      INTO ld_text SEPARATED BY SPACE.

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