ABAP Select data from SAP table REXC_IT_ICI_PDF_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP REXC_IT_ICI_PDF_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 REXC_IT_ICI_PDF_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 REXC_IT_ICI_PDF_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_REXC_IT_ICI_PDF_ALV TYPE STANDARD TABLE OF REXC_IT_ICI_PDF_ALV,
      WA_REXC_IT_ICI_PDF_ALV TYPE REXC_IT_ICI_PDF_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: <REXC_IT_ICI_PDF_ALV> TYPE REXC_IT_ICI_PDF_ALV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXC_IT_ICI_PDF_ALV
*  INTO TABLE @DATA(IT_REXC_IT_ICI_PDF_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_REXC_IT_ICI_PDF_ALV INDEX 1 INTO DATA(WA_REXC_IT_ICI_PDF_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXC_IT_ICI_PDF_ALV>-CITYCODE = 1.
<REXC_IT_ICI_PDF_ALV>-CITYNAME = 1.
<REXC_IT_ICI_PDF_ALV>-PROTOCOLDATE = 1.
<REXC_IT_ICI_PDF_ALV>-NRPROTOCOL = 1.
<REXC_IT_ICI_PDF_ALV>-ACTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXC_IT_ICI_PDF_ALV-ACTDESCR, sy-vline,
  WA_REXC_IT_ICI_PDF_ALV-VALIDFROM, sy-vline,
  WA_REXC_IT_ICI_PDF_ALV-DISPOSAL, sy-vline,
  WA_REXC_IT_ICI_PDF_ALV-FORMNUMBER, sy-vline,
  WA_REXC_IT_ICI_PDF_ALV-SUBNR, sy-vline,
  WA_REXC_IT_ICI_PDF_ALV-NRORDEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXC_IT_ICI_PDF_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_REXC_IT_ICI_PDF_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_REXC_IT_ICI_PDF_ALV INTO WA_REXC_IT_ICI_PDF_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 GJAHR, internal->external for field REPORTYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_REXC_IT_ICI_PDF_ALV-REPORTYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXC_IT_ICI_PDF_ALV-REPORTYEAR.
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_REXC_IT_ICI_PDF_ALV_STR, 
CITYCODE TYPE STRING,
CITYNAME TYPE STRING,
PROTOCOLDATE TYPE STRING,
NRPROTOCOL TYPE STRING,
ACTTYPE TYPE STRING,
ACTDESCR TYPE STRING,
VALIDFROM TYPE STRING,
DISPOSAL TYPE STRING,
FORMNUMBER TYPE STRING,
SUBNR TYPE STRING,
NRORDEN TYPE STRING,
INTRENO TYPE STRING,
CHARACTERISTICS TYPE STRING,
ADDRESS TYPE STRING,
DIVISION TYPE STRING,
SHEET TYPE STRING,
PARCEL TYPE STRING,
SUBALTERN TYPE STRING,
CATEGORY TYPE STRING,
CLASS TYPE STRING,
REPORTYEAR TYPE STRING,
HISTORICBUILDING TYPE STRING,
VALUE TYPE STRING,
PERCOWN TYPE STRING,
MONOWN TYPE STRING,
MONOWN1 TYPE STRING,
MONOWN2 TYPE STRING,
MONEXCL TYPE STRING,
MONEXCL1 TYPE STRING,
MONEXCL2 TYPE STRING,
MONRED TYPE STRING,
MONRED1 TYPE STRING,
MONRED2 TYPE STRING,
DETRAMOUNT TYPE STRING,
STATEYEAR TYPE STRING,
OWNED TYPE STRING,
EXEMPTED TYPE STRING,
REDUCED TYPE STRING,
MAINRESIDENCE TYPE STRING,
ACQUISITION TYPE STRING,
FISCALOFFICE TYPE STRING,
CURRENCY TYPE STRING,
ISMANUALRATE TYPE STRING,
CALCTYPE TYPE STRING,
PERIODFROM TYPE STRING,
PERIODTO TYPE STRING,
VALIDITY TYPE STRING,
IS_UNINHABIT TYPE STRING,
BUILDSTATUS TYPE STRING,
IS_EXEMPT TYPE STRING,
AOID TYPE STRING,
AUTHGRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXC_IT_ICI_PDF_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_REXC_IT_ICI_PDF_ALV_STR-CITYCODE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-CITYNAME sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-PROTOCOLDATE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-NRPROTOCOL sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-ACTTYPE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-ACTDESCR sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-VALIDFROM sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-DISPOSAL sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-FORMNUMBER sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-SUBNR sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-NRORDEN sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-INTRENO sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-CHARACTERISTICS sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-ADDRESS sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-DIVISION sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-SHEET sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-PARCEL sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-SUBALTERN sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-CATEGORY sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-CLASS sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-REPORTYEAR sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-HISTORICBUILDING sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-VALUE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-PERCOWN sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONOWN sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONOWN1 sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONOWN2 sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONEXCL sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONEXCL1 sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONEXCL2 sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONRED sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONRED1 sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MONRED2 sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-DETRAMOUNT sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-STATEYEAR sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-OWNED sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-EXEMPTED sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-REDUCED sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-MAINRESIDENCE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-ACQUISITION sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-FISCALOFFICE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-CURRENCY sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-ISMANUALRATE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-CALCTYPE sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-PERIODFROM sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-PERIODTO sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-VALIDITY sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-IS_UNINHABIT sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-BUILDSTATUS sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-IS_EXEMPT sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-AOID sy-vline 
WA_REXC_IT_ICI_PDF_ALV_STR-AUTHGRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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