ABAP Select data from SAP table ROIRC_DIFFERENCES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIRC_DIFFERENCES
*  INTO TABLE @DATA(IT_ROIRC_DIFFERENCES2).
*--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_ROIRC_DIFFERENCES INDEX 1 INTO DATA(WA_ROIRC_DIFFERENCES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIRC_DIFFERENCES>-PRICE_CONTROL = 1.
<ROIRC_DIFFERENCES>-PRICE_LINE = 1.
<ROIRC_DIFFERENCES>-MATCHECK = 1.
<ROIRC_DIFFERENCES>-LPRCLU = 1.
<ROIRC_DIFFERENCES>-LPRCLU_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIRC_DIFFERENCES-PBLNR, sy-vline,
  WA_ROIRC_DIFFERENCES-PBLNR_TEXT, sy-vline,
  WA_ROIRC_DIFFERENCES-ADDRNUM, sy-vline,
  WA_ROIRC_DIFFERENCES-RNBT, sy-vline,
  WA_ROIRC_DIFFERENCES-RNBT_TEXT, sy-vline,
  WA_ROIRC_DIFFERENCES-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIRC_DIFFERENCES 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_ROIRC_DIFFERENCES 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_ROIRC_DIFFERENCES INTO WA_ROIRC_DIFFERENCES.


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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIRC_DIFFERENCES-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRC_DIFFERENCES-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_R
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIRC_DIFFERENCES-MATNR_R
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRC_DIFFERENCES-MATNR_R.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_D
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ROIRC_DIFFERENCES-MATNR_D
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRC_DIFFERENCES-MATNR_D.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field PBLNR_DEP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ROIRC_DIFFERENCES-PBLNR_DEP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRC_DIFFERENCES-PBLNR_DEP.
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_ROIRC_DIFFERENCES_STR, 
PRICE_CONTROL TYPE STRING,
PRICE_LINE TYPE STRING,
MATCHECK TYPE STRING,
LPRCLU TYPE STRING,
LPRCLU_TEXT TYPE STRING,
PBLNR TYPE STRING,
PBLNR_TEXT TYPE STRING,
ADDRNUM TYPE STRING,
RNBT TYPE STRING,
RNBT_TEXT TYPE STRING,
MATNR TYPE STRING,
MATNR_TEXT TYPE STRING,
MATHANDGRP TYPE STRING,
MDIFFGR TYPE STRING,
MDIFFGR_TEXT TYPE STRING,
MATNR_R TYPE STRING,
MATNR_R_TEXT TYPE STRING,
MATNR_D TYPE STRING,
MATNR_D_TEXT TYPE STRING,
SFDIFFGR TYPE STRING,
SFDIFFGR_TEXT TYPE STRING,
STYPE_R TYPE STRING,
STYPE_R_TEXT TYPE STRING,
STYPE_D TYPE STRING,
STYPE_D_TEXT TYPE STRING,
COMPPBLNR TYPE STRING,
COMPPBLNR_TEXT TYPE STRING,
KONWA TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
RATE TYPE STRING,
RATE_MAX TYPE STRING,
RATE_MIN TYPE STRING,
IND_LIMIT TYPE STRING,
KALVG TYPE STRING,
KALKS TYPE STRING,
KSCHL TYPE STRING,
PBLNR_DEP TYPE STRING,
PBLNR_DEP_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIRC_DIFFERENCES_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_ROIRC_DIFFERENCES_STR-PRICE_CONTROL sy-vline 
WA_ROIRC_DIFFERENCES_STR-PRICE_LINE sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATCHECK sy-vline 
WA_ROIRC_DIFFERENCES_STR-LPRCLU sy-vline 
WA_ROIRC_DIFFERENCES_STR-LPRCLU_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-PBLNR sy-vline 
WA_ROIRC_DIFFERENCES_STR-PBLNR_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-ADDRNUM sy-vline 
WA_ROIRC_DIFFERENCES_STR-RNBT sy-vline 
WA_ROIRC_DIFFERENCES_STR-RNBT_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATNR sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATNR_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATHANDGRP sy-vline 
WA_ROIRC_DIFFERENCES_STR-MDIFFGR sy-vline 
WA_ROIRC_DIFFERENCES_STR-MDIFFGR_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATNR_R sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATNR_R_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATNR_D sy-vline 
WA_ROIRC_DIFFERENCES_STR-MATNR_D_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-SFDIFFGR sy-vline 
WA_ROIRC_DIFFERENCES_STR-SFDIFFGR_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-STYPE_R sy-vline 
WA_ROIRC_DIFFERENCES_STR-STYPE_R_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-STYPE_D sy-vline 
WA_ROIRC_DIFFERENCES_STR-STYPE_D_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-COMPPBLNR sy-vline 
WA_ROIRC_DIFFERENCES_STR-COMPPBLNR_TEXT sy-vline 
WA_ROIRC_DIFFERENCES_STR-KONWA sy-vline 
WA_ROIRC_DIFFERENCES_STR-KPEIN sy-vline 
WA_ROIRC_DIFFERENCES_STR-KMEIN sy-vline 
WA_ROIRC_DIFFERENCES_STR-RATE sy-vline 
WA_ROIRC_DIFFERENCES_STR-RATE_MAX sy-vline 
WA_ROIRC_DIFFERENCES_STR-RATE_MIN sy-vline 
WA_ROIRC_DIFFERENCES_STR-IND_LIMIT sy-vline 
WA_ROIRC_DIFFERENCES_STR-KALVG sy-vline 
WA_ROIRC_DIFFERENCES_STR-KALKS sy-vline 
WA_ROIRC_DIFFERENCES_STR-KSCHL sy-vline 
WA_ROIRC_DIFFERENCES_STR-PBLNR_DEP sy-vline 
WA_ROIRC_DIFFERENCES_STR-PBLNR_DEP_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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