ABAP Select data from SAP table RESC_SETTL_UNIT_IDENT_CI 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_IDENT_CI 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_IDENT_CI. 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_IDENT_CI 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_IDENT_CI TYPE STANDARD TABLE OF RESC_SETTL_UNIT_IDENT_CI,
      WA_RESC_SETTL_UNIT_IDENT_CI TYPE RESC_SETTL_UNIT_IDENT_CI,
      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_IDENT_CI> TYPE RESC_SETTL_UNIT_IDENT_CI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RESC_SETTL_UNIT_IDENT_CI
*  INTO TABLE @DATA(IT_RESC_SETTL_UNIT_IDENT_CI2).
*--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_IDENT_CI INDEX 1 INTO DATA(WA_RESC_SETTL_UNIT_IDENT_CI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RESC_SETTL_UNIT_IDENT_CI>-OBJNR = 1.
<RESC_SETTL_UNIT_IDENT_CI>-OBJTYPE = 1.
<RESC_SETTL_UNIT_IDENT_CI>-OBJID = 1.
<RESC_SETTL_UNIT_IDENT_CI>-DUMMYFIELD = 1.
<RESC_SETTL_UNIT_IDENT_CI>-CORRSU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RESC_SETTL_UNIT_IDENT_CI-CORRINTRENO, sy-vline,
  WA_RESC_SETTL_UNIT_IDENT_CI-CORRVALIDFROM, sy-vline,
  WA_RESC_SETTL_UNIT_IDENT_CI-CORRVALIDTO, sy-vline,
  WA_RESC_SETTL_UNIT_IDENT_CI-EO, sy-vline,
  WA_RESC_SETTL_UNIT_IDENT_CI-ACCDETKEY, sy-vline,
  WA_RESC_SETTL_UNIT_IDENT_CI-STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RESC_SETTL_UNIT_IDENT_CI 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_IDENT_CI 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_IDENT_CI INTO WA_RESC_SETTL_UNIT_IDENT_CI.


*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 REDAT, internal->external for field CORRVALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RESC_SETTL_UNIT_IDENT_CI-CORRVALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RESC_SETTL_UNIT_IDENT_CI-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_IDENT_CI_STR, 
OBJNR TYPE STRING,
OBJTYPE TYPE STRING,
OBJID TYPE STRING,
DUMMYFIELD TYPE STRING,
CORRSU TYPE STRING,
CORRINTRENO TYPE STRING,
CORRVALIDFROM TYPE STRING,
CORRVALIDTO TYPE STRING,
EO TYPE STRING,
ACCDETKEY TYPE STRING,
STATUS TYPE STRING,
SUEXTFORSCS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RESC_SETTL_UNIT_IDENT_CI_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_IDENT_CI_STR-OBJNR sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-OBJTYPE sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-OBJID sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-DUMMYFIELD sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-CORRSU sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-CORRINTRENO sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-CORRVALIDFROM sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-CORRVALIDTO sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-EO sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-ACCDETKEY sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_STR-STATUS sy-vline 
WA_RESC_SETTL_UNIT_IDENT_CI_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.