ABAP Select data from SAP table ROIRC_PRLOG_PRM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ROIRC_PRLOG_PRM 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_PRLOG_PRM. 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_PRLOG_PRM 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_PRLOG_PRM TYPE STANDARD TABLE OF ROIRC_PRLOG_PRM,
      WA_ROIRC_PRLOG_PRM TYPE ROIRC_PRLOG_PRM,
      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_PRLOG_PRM> TYPE ROIRC_PRLOG_PRM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ROIRC_PRLOG_PRM
*  INTO TABLE @DATA(IT_ROIRC_PRLOG_PRM2).
*--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_PRLOG_PRM INDEX 1 INTO DATA(WA_ROIRC_PRLOG_PRM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ROIRC_PRLOG_PRM>-RNBT = 1.
<ROIRC_PRLOG_PRM>-IND_PER = 1.
<ROIRC_PRLOG_PRM>-IND_MSEL = 1.
<ROIRC_PRLOG_PRM>-IND_SSEL = 1.
<ROIRC_PRLOG_PRM>-CONFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ROIRC_PRLOG_PRM-CONTO, sy-vline,
  WA_ROIRC_PRLOG_PRM-PRDATE, sy-vline,
  WA_ROIRC_PRLOG_PRM-PRTIME, sy-vline,
  WA_ROIRC_PRLOG_PRM-LIVAR, sy-vline,
  WA_ROIRC_PRLOG_PRM-KONWA, sy-vline,
  WA_ROIRC_PRLOG_PRM-KPEIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ROIRC_PRLOG_PRM 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_PRLOG_PRM 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_PRLOG_PRM INTO WA_ROIRC_PRLOG_PRM.


*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 CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ROIRC_PRLOG_PRM-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ROIRC_PRLOG_PRM-KMEIN.
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_PRLOG_PRM_STR, 
RNBT TYPE STRING,
IND_PER TYPE STRING,
IND_MSEL TYPE STRING,
IND_SSEL TYPE STRING,
CONFROM TYPE STRING,
CONTO TYPE STRING,
PRDATE TYPE STRING,
PRTIME TYPE STRING,
LIVAR TYPE STRING,
KONWA TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
CHGREASON TYPE STRING,
CHGTEXT TYPE STRING,
ERDAT TYPE STRING,
ERZEIT TYPE STRING,
ERNAM TYPE STRING,
UPD_FLAG TYPE STRING,
KSCHL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ROIRC_PRLOG_PRM_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_PRLOG_PRM_STR-RNBT sy-vline 
WA_ROIRC_PRLOG_PRM_STR-IND_PER sy-vline 
WA_ROIRC_PRLOG_PRM_STR-IND_MSEL sy-vline 
WA_ROIRC_PRLOG_PRM_STR-IND_SSEL sy-vline 
WA_ROIRC_PRLOG_PRM_STR-CONFROM sy-vline 
WA_ROIRC_PRLOG_PRM_STR-CONTO sy-vline 
WA_ROIRC_PRLOG_PRM_STR-PRDATE sy-vline 
WA_ROIRC_PRLOG_PRM_STR-PRTIME sy-vline 
WA_ROIRC_PRLOG_PRM_STR-LIVAR sy-vline 
WA_ROIRC_PRLOG_PRM_STR-KONWA sy-vline 
WA_ROIRC_PRLOG_PRM_STR-KPEIN sy-vline 
WA_ROIRC_PRLOG_PRM_STR-KMEIN sy-vline 
WA_ROIRC_PRLOG_PRM_STR-CHGREASON sy-vline 
WA_ROIRC_PRLOG_PRM_STR-CHGTEXT sy-vline 
WA_ROIRC_PRLOG_PRM_STR-ERDAT sy-vline 
WA_ROIRC_PRLOG_PRM_STR-ERZEIT sy-vline 
WA_ROIRC_PRLOG_PRM_STR-ERNAM sy-vline 
WA_ROIRC_PRLOG_PRM_STR-UPD_FLAG sy-vline 
WA_ROIRC_PRLOG_PRM_STR-KSCHL sy-vline      INTO ld_text SEPARATED BY SPACE.

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