ABAP Select data from SAP table REIS_CT_ALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REIS_CT_ALL
*  INTO TABLE @DATA(IT_REIS_CT_ALL2).
*--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_REIS_CT_ALL INDEX 1 INTO DATA(WA_REIS_CT_ALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REIS_CT_ALL>-SUPPLEMENTINFO0101 = 1.
<REIS_CT_ALL>-HREFHANDLE0101 = 1.
<REIS_CT_ALL>-SUPPLEMENTINFO0201 = 1.
<REIS_CT_ALL>-HREFHANDLE0201 = 1.
<REIS_CT_ALL>-SUPPLEMENTINFO0301 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REIS_CT_ALL-HREFHANDLE0301, sy-vline,
  WA_REIS_CT_ALL-SUPPLEMENTINFO0401, sy-vline,
  WA_REIS_CT_ALL-HREFHANDLE0401, sy-vline,
  WA_REIS_CT_ALL-SUPPLEMENTINFO0501, sy-vline,
  WA_REIS_CT_ALL-HREFHANDLE0501, sy-vline,
  WA_REIS_CT_ALL-SUPPLEMENTINFO0601, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REIS_CT_ALL 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_REIS_CT_ALL 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_REIS_CT_ALL INTO WA_REIS_CT_ALL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_REIS_CT_ALL_STR, 
SUPPLEMENTINFO0101 TYPE STRING,
HREFHANDLE0101 TYPE STRING,
SUPPLEMENTINFO0201 TYPE STRING,
HREFHANDLE0201 TYPE STRING,
SUPPLEMENTINFO0301 TYPE STRING,
HREFHANDLE0301 TYPE STRING,
SUPPLEMENTINFO0401 TYPE STRING,
HREFHANDLE0401 TYPE STRING,
SUPPLEMENTINFO0501 TYPE STRING,
HREFHANDLE0501 TYPE STRING,
SUPPLEMENTINFO0601 TYPE STRING,
HREFHANDLE0601 TYPE STRING,
SUPPLEMENTINFO0701 TYPE STRING,
HREFHANDLE0701 TYPE STRING,
SUPPLEMENTINFO0801 TYPE STRING,
HREFHANDLE0801 TYPE STRING,
SUPPLEMENTINFO0901 TYPE STRING,
HREFHANDLE0901 TYPE STRING,
SUPPLEMENTINFO1001 TYPE STRING,
HREFHANDLE1001 TYPE STRING,
SUPPLEMENTINFO0102 TYPE STRING,
HREFHANDLE0102 TYPE STRING,
SUPPLEMENTINFO0202 TYPE STRING,
HREFHANDLE0202 TYPE STRING,
SUPPLEMENTINFO0302 TYPE STRING,
HREFHANDLE0302 TYPE STRING,
SUPPLEMENTINFO0402 TYPE STRING,
HREFHANDLE0402 TYPE STRING,
SUPPLEMENTINFO0502 TYPE STRING,
HREFHANDLE0502 TYPE STRING,
SUPPLEMENTINFO0602 TYPE STRING,
HREFHANDLE0602 TYPE STRING,
SUPPLEMENTINFO0702 TYPE STRING,
HREFHANDLE0702 TYPE STRING,
SUPPLEMENTINFO0802 TYPE STRING,
HREFHANDLE0802 TYPE STRING,
SUPPLEMENTINFO0902 TYPE STRING,
HREFHANDLE0902 TYPE STRING,
SUPPLEMENTINFO1002 TYPE STRING,
HREFHANDLE1002 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REIS_CT_ALL_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_REIS_CT_ALL_STR-SUPPLEMENTINFO0101 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0101 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0201 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0201 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0301 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0301 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0401 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0401 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0501 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0501 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0601 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0601 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0701 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0701 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0801 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0801 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0901 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0901 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO1001 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE1001 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0102 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0102 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0202 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0202 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0302 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0302 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0402 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0402 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0502 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0502 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0602 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0602 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0702 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0702 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0802 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0802 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO0902 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE0902 sy-vline 
WA_REIS_CT_ALL_STR-SUPPLEMENTINFO1002 sy-vline 
WA_REIS_CT_ALL_STR-HREFHANDLE1002 sy-vline      INTO ld_text SEPARATED BY SPACE.

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