ABAP Select data from SAP table IRSCESECTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IRSCESECTION
*  INTO TABLE @DATA(IT_IRSCESECTION2).
*--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_IRSCESECTION INDEX 1 INTO DATA(WA_IRSCESECTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IRSCESECTION>-MANDT = 1.
<IRSCESECTION>-RESOURCEADDITIONALUUID = 1.
<IRSCESECTION>-RESOURCETYPE = 1.
<IRSCESECTION>-RESOURCESECTION = 1.
<IRSCESECTION>-RESOURCESECTIONTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IRSCESECTION-RSCESECTIONHORIZONTALSTARTPOS, sy-vline,
  WA_IRSCESECTION-RSCESECTIONHORIZONTALENDPOS, sy-vline,
  WA_IRSCESECTION-RSCESECTIONVERTICALSTARTPOS, sy-vline,
  WA_IRSCESECTION-RSCESECTIONVERTICALENDPOS, sy-vline,
  WA_IRSCESECTION-RESOURCESECTIONPOSUNIT, sy-vline,
  WA_IRSCESECTION-RESOURCESPLITDECKTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IRSCESECTION 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_IRSCESECTION 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_IRSCESECTION INTO WA_IRSCESECTION.


*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 RESOURCESECTIONPOSUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IRSCESECTION-RESOURCESECTIONPOSUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRSCESECTION-RESOURCESECTIONPOSUNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field RESOURCESPLITDECKWEIGHTUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IRSCESECTION-RESOURCESPLITDECKWEIGHTUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IRSCESECTION-RESOURCESPLITDECKWEIGHTUNIT.
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_IRSCESECTION_STR, 
MANDT TYPE STRING,
RESOURCEADDITIONALUUID TYPE STRING,
RESOURCETYPE TYPE STRING,
RESOURCESECTION TYPE STRING,
RESOURCESECTIONTYPE TYPE STRING,
RSCESECTIONHORIZONTALSTARTPOS TYPE STRING,
RSCESECTIONHORIZONTALENDPOS TYPE STRING,
RSCESECTIONVERTICALSTARTPOS TYPE STRING,
RSCESECTIONVERTICALENDPOS TYPE STRING,
RESOURCESECTIONPOSUNIT TYPE STRING,
RESOURCESPLITDECKTYPE TYPE STRING,
RSCESPLITDECKVERTICALSTARTPOS TYPE STRING,
RSCESPLITDECKVERTICALENDPOS TYPE STRING,
RESOURCESPLITDECKRASTER TYPE STRING,
RESOURCESPLITDECKHEIGHT TYPE STRING,
RESOURCESPLITDECKWEIGHT TYPE STRING,
RESOURCESPLITDECKMAXLOADWEIGHT TYPE STRING,
RESOURCESPLITDECKISREMOVABLE TYPE STRING,
RESOURCESPLITDECKDIMENSIONUNIT TYPE STRING,
RESOURCESPLITDECKWEIGHTUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IRSCESECTION_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_IRSCESECTION_STR-MANDT sy-vline 
WA_IRSCESECTION_STR-RESOURCEADDITIONALUUID sy-vline 
WA_IRSCESECTION_STR-RESOURCETYPE sy-vline 
WA_IRSCESECTION_STR-RESOURCESECTION sy-vline 
WA_IRSCESECTION_STR-RESOURCESECTIONTYPE sy-vline 
WA_IRSCESECTION_STR-RSCESECTIONHORIZONTALSTARTPOS sy-vline 
WA_IRSCESECTION_STR-RSCESECTIONHORIZONTALENDPOS sy-vline 
WA_IRSCESECTION_STR-RSCESECTIONVERTICALSTARTPOS sy-vline 
WA_IRSCESECTION_STR-RSCESECTIONVERTICALENDPOS sy-vline 
WA_IRSCESECTION_STR-RESOURCESECTIONPOSUNIT sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKTYPE sy-vline 
WA_IRSCESECTION_STR-RSCESPLITDECKVERTICALSTARTPOS sy-vline 
WA_IRSCESECTION_STR-RSCESPLITDECKVERTICALENDPOS sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKRASTER sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKHEIGHT sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKWEIGHT sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKMAXLOADWEIGHT sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKISREMOVABLE sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKDIMENSIONUNIT sy-vline 
WA_IRSCESECTION_STR-RESOURCESPLITDECKWEIGHTUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

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