ABAP Select data from SAP table RESC_SETTL_UNIT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESC_SETTL_UNIT
*  INTO TABLE @DATA(IT_RESC_SETTL_UNIT2).
*--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_RESC_SETTL_UNIT INDEX 1 INTO DATA(WA_RESC_SETTL_UNIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESC_SETTL_UNIT>-MANDT = 1.
<RESC_SETTL_UNIT>-INTRENO = 1.
<RESC_SETTL_UNIT>-BUKRS = 1.
<RESC_SETTL_UNIT>-SWENR = 1.
<RESC_SETTL_UNIT>-SNKSL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESC_SETTL_UNIT-SEMPSL, sy-vline,
  WA_RESC_SETTL_UNIT-OBJNR, sy-vline,
  WA_RESC_SETTL_UNIT-IMKEY, sy-vline,
  WA_RESC_SETTL_UNIT-CREATIONTYPE, sy-vline,
  WA_RESC_SETTL_UNIT-RERF, sy-vline,
  WA_RESC_SETTL_UNIT-DERF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESC_SETTL_UNIT 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_RESC_SETTL_UNIT 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_RESC_SETTL_UNIT INTO WA_RESC_SETTL_UNIT.


*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 SWENR, internal->external for field SWENR
CALL FUNCTION 'CONVERSION_EXIT_SWENR_OUTPUT'
  EXPORTING
    input =                      WA_RESC_SETTL_UNIT-SWENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_SETTL_UNIT-SWENR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit IMKEY, internal->external for field IMKEY
CALL FUNCTION 'CONVERSION_EXIT_IMKEY_OUTPUT'
  EXPORTING
    input =                      WA_RESC_SETTL_UNIT-IMKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_SETTL_UNIT-IMKEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RESC_SETTL_UNIT-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_SETTL_UNIT-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field CORRVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RESC_SETTL_UNIT-CORRVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_SETTL_UNIT-CORRVALIDTO.
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_RESC_SETTL_UNIT_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
BUKRS TYPE STRING,
SWENR TYPE STRING,
SNKSL TYPE STRING,
SEMPSL TYPE STRING,
OBJNR TYPE STRING,
IMKEY TYPE STRING,
CREATIONTYPE TYPE STRING,
RERF TYPE STRING,
DERF TYPE STRING,
TERF TYPE STRING,
REHER TYPE STRING,
RBEAR TYPE STRING,
DBEAR TYPE STRING,
TBEAR TYPE STRING,
RBHER TYPE STRING,
RESPONSIBLE TYPE STRING,
USEREXCLUSIVE TYPE STRING,
AUTHGRP TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
SUTYPE TYPE STRING,
XSU TYPE STRING,
TENANCYLAW TYPE STRING,
HASCOSTOBJECT TYPE STRING,
NOTAXCORR TYPE STRING,
EXCHANGETYPE TYPE STRING,
SETTLADVPAY TYPE STRING,
PERHEATING TYPE STRING,
PERHOTWATER TYPE STRING,
MSUCROSSOVERCC TYPE STRING,
CORRSU TYPE STRING,
CORRINTRENO TYPE STRING,
CORRVALIDFROM TYPE STRING,
CORRVALIDTO TYPE STRING,
SUEXTFORSCS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESC_SETTL_UNIT_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_RESC_SETTL_UNIT_STR-MANDT sy-vline 
WA_RESC_SETTL_UNIT_STR-INTRENO sy-vline 
WA_RESC_SETTL_UNIT_STR-BUKRS sy-vline 
WA_RESC_SETTL_UNIT_STR-SWENR sy-vline 
WA_RESC_SETTL_UNIT_STR-SNKSL sy-vline 
WA_RESC_SETTL_UNIT_STR-SEMPSL sy-vline 
WA_RESC_SETTL_UNIT_STR-OBJNR sy-vline 
WA_RESC_SETTL_UNIT_STR-IMKEY sy-vline 
WA_RESC_SETTL_UNIT_STR-CREATIONTYPE sy-vline 
WA_RESC_SETTL_UNIT_STR-RERF sy-vline 
WA_RESC_SETTL_UNIT_STR-DERF sy-vline 
WA_RESC_SETTL_UNIT_STR-TERF sy-vline 
WA_RESC_SETTL_UNIT_STR-REHER sy-vline 
WA_RESC_SETTL_UNIT_STR-RBEAR sy-vline 
WA_RESC_SETTL_UNIT_STR-DBEAR sy-vline 
WA_RESC_SETTL_UNIT_STR-TBEAR sy-vline 
WA_RESC_SETTL_UNIT_STR-RBHER sy-vline 
WA_RESC_SETTL_UNIT_STR-RESPONSIBLE sy-vline 
WA_RESC_SETTL_UNIT_STR-USEREXCLUSIVE sy-vline 
WA_RESC_SETTL_UNIT_STR-AUTHGRP sy-vline 
WA_RESC_SETTL_UNIT_STR-VALIDFROM sy-vline 
WA_RESC_SETTL_UNIT_STR-VALIDTO sy-vline 
WA_RESC_SETTL_UNIT_STR-SUTYPE sy-vline 
WA_RESC_SETTL_UNIT_STR-XSU sy-vline 
WA_RESC_SETTL_UNIT_STR-TENANCYLAW sy-vline 
WA_RESC_SETTL_UNIT_STR-HASCOSTOBJECT sy-vline 
WA_RESC_SETTL_UNIT_STR-NOTAXCORR sy-vline 
WA_RESC_SETTL_UNIT_STR-EXCHANGETYPE sy-vline 
WA_RESC_SETTL_UNIT_STR-SETTLADVPAY sy-vline 
WA_RESC_SETTL_UNIT_STR-PERHEATING sy-vline 
WA_RESC_SETTL_UNIT_STR-PERHOTWATER sy-vline 
WA_RESC_SETTL_UNIT_STR-MSUCROSSOVERCC sy-vline 
WA_RESC_SETTL_UNIT_STR-CORRSU sy-vline 
WA_RESC_SETTL_UNIT_STR-CORRINTRENO sy-vline 
WA_RESC_SETTL_UNIT_STR-CORRVALIDFROM sy-vline 
WA_RESC_SETTL_UNIT_STR-CORRVALIDTO sy-vline 
WA_RESC_SETTL_UNIT_STR-SUEXTFORSCS sy-vline      INTO ld_text SEPARATED BY SPACE.

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