ABAP Select data from SAP table IREREGLOC into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IREREGLOC 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 IREREGLOC. 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 IREREGLOC 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_IREREGLOC TYPE STANDARD TABLE OF IREREGLOC,
      WA_IREREGLOC TYPE IREREGLOC,
      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: <IREREGLOC> TYPE IREREGLOC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IREREGLOC
*  INTO TABLE @DATA(IT_IREREGLOC2).
*--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_IREREGLOC INDEX 1 INTO DATA(WA_IREREGLOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IREREGLOC>-MANDT = 1.
<IREREGLOC>-REREGIONALLOCATION = 1.
<IREREGLOC>-REREGIONALLOCATIONNAME = 1.
<IREREGLOC>-REMORTGAGELOANINTERESTRATEREF = 1.
<IREREGLOC>-REMAINTANDOPERATINGCOSTSINDEX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IREREGLOC-RESTANDARDOFLIVINGINDEX, sy-vline,
  WA_IREREGLOC-REBASEYEARSTDOFLIVINGINDEX, sy-vline,
  WA_IREREGLOC-RERENTADJUSTMENTBYPOINTSVALUE, sy-vline,
  WA_IREREGLOC-READJMTISONBSOFTYPICALRENT, sy-vline,
  WA_IREREGLOC-READJMTISONBSOFGROSSYIELD, sy-vline,
  WA_IREREGLOC-READJMTISONBSOFMORTGAGELOAN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IREREGLOC 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_IREREGLOC 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_IREREGLOC INTO WA_IREREGLOC.


*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 REBASEYEARSTDOFLIVINGINDEX
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IREREGLOC-REBASEYEARSTDOFLIVINGINDEX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREREGLOC-REBASEYEARSTDOFLIVINGINDEX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_IREREGLOC-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IREREGLOC-LANGUAGE.
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_IREREGLOC_STR, 
MANDT TYPE STRING,
REREGIONALLOCATION TYPE STRING,
REREGIONALLOCATIONNAME TYPE STRING,
REMORTGAGELOANINTERESTRATEREF TYPE STRING,
REMAINTANDOPERATINGCOSTSINDEX TYPE STRING,
RESTANDARDOFLIVINGINDEX TYPE STRING,
REBASEYEARSTDOFLIVINGINDEX TYPE STRING,
RERENTADJUSTMENTBYPOINTSVALUE TYPE STRING,
READJMTISONBSOFTYPICALRENT TYPE STRING,
READJMTISONBSOFGROSSYIELD TYPE STRING,
READJMTISONBSOFMORTGAGELOAN TYPE STRING,
READJMTISONBSOFLIVINGINDEX TYPE STRING,
READJMTISONBSOFCOSTSINDEX TYPE STRING,
READJMTISONBSOFMODERNIZATION TYPE STRING,
LANGUAGE TYPE STRING,
RECORRESPONDENCEACTIVITYRENT TYPE STRING,
RECORRESPONDENCEACTIVITYNOTICE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IREREGLOC_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_IREREGLOC_STR-MANDT sy-vline 
WA_IREREGLOC_STR-REREGIONALLOCATION sy-vline 
WA_IREREGLOC_STR-REREGIONALLOCATIONNAME sy-vline 
WA_IREREGLOC_STR-REMORTGAGELOANINTERESTRATEREF sy-vline 
WA_IREREGLOC_STR-REMAINTANDOPERATINGCOSTSINDEX sy-vline 
WA_IREREGLOC_STR-RESTANDARDOFLIVINGINDEX sy-vline 
WA_IREREGLOC_STR-REBASEYEARSTDOFLIVINGINDEX sy-vline 
WA_IREREGLOC_STR-RERENTADJUSTMENTBYPOINTSVALUE sy-vline 
WA_IREREGLOC_STR-READJMTISONBSOFTYPICALRENT sy-vline 
WA_IREREGLOC_STR-READJMTISONBSOFGROSSYIELD sy-vline 
WA_IREREGLOC_STR-READJMTISONBSOFMORTGAGELOAN sy-vline 
WA_IREREGLOC_STR-READJMTISONBSOFLIVINGINDEX sy-vline 
WA_IREREGLOC_STR-READJMTISONBSOFCOSTSINDEX sy-vline 
WA_IREREGLOC_STR-READJMTISONBSOFMODERNIZATION sy-vline 
WA_IREREGLOC_STR-LANGUAGE sy-vline 
WA_IREREGLOC_STR-RECORRESPONDENCEACTIVITYRENT sy-vline 
WA_IREREGLOC_STR-RECORRESPONDENCEACTIVITYNOTICE sy-vline      INTO ld_text SEPARATED BY SPACE.

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