ABAP Select data from SAP table REYC_CAPPING_RH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REYC_CAPPING_RH
*  INTO TABLE @DATA(IT_REYC_CAPPING_RH2).
*--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_REYC_CAPPING_RH INDEX 1 INTO DATA(WA_REYC_CAPPING_RH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REYC_CAPPING_RH>-MANDT = 1.
<REYC_CAPPING_RH>-INTRENO = 1.
<REYC_CAPPING_RH>-TERMTYPE = 1.
<REYC_CAPPING_RH>-TERMNO = 1.
<REYC_CAPPING_RH>-VALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REYC_CAPPING_RH-VALIDTO, sy-vline,
  WA_REYC_CAPPING_RH-TERMNONAME, sy-vline,
  WA_REYC_CAPPING_RH-CAPPINGRATEPRE, sy-vline,
  WA_REYC_CAPPING_RH-CAPPINGAMNTPRE, sy-vline,
  WA_REYC_CAPPING_RH-LESSAMNTRATEPRE, sy-vline,
  WA_REYC_CAPPING_RH-CAPPINGINCRPRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REYC_CAPPING_RH 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_REYC_CAPPING_RH 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_REYC_CAPPING_RH INTO WA_REYC_CAPPING_RH.


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

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

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

*Conversion exit CUNIT, internal->external for field FEINSPOS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REYC_CAPPING_RH-FEINSPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REYC_CAPPING_RH-FEINSPOS.
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_REYC_CAPPING_RH_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
TERMTYPE TYPE STRING,
TERMNO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
TERMNONAME TYPE STRING,
CAPPINGRATEPRE TYPE STRING,
CAPPINGAMNTPRE TYPE STRING,
LESSAMNTRATEPRE TYPE STRING,
CAPPINGINCRPRE TYPE STRING,
INDEXPRE1 TYPE STRING,
INDEXPRE2 TYPE STRING,
INDEXPRE3 TYPE STRING,
CUMULATIVEPRE TYPE STRING,
CAPPINGRATEPOS TYPE STRING,
CAPPINGAMNTPOS TYPE STRING,
CAPPINGINCRPOS TYPE STRING,
LESSAMNTRATEPOS TYPE STRING,
INDEXPOS1 TYPE STRING,
INDEXPOS2 TYPE STRING,
INDEXPOS3 TYPE STRING,
CUMULATIVEPOS TYPE STRING,
FEINSPRE TYPE STRING,
FEINSPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REYC_CAPPING_RH_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_REYC_CAPPING_RH_STR-MANDT sy-vline 
WA_REYC_CAPPING_RH_STR-INTRENO sy-vline 
WA_REYC_CAPPING_RH_STR-TERMTYPE sy-vline 
WA_REYC_CAPPING_RH_STR-TERMNO sy-vline 
WA_REYC_CAPPING_RH_STR-VALIDFROM sy-vline 
WA_REYC_CAPPING_RH_STR-VALIDTO sy-vline 
WA_REYC_CAPPING_RH_STR-TERMNONAME sy-vline 
WA_REYC_CAPPING_RH_STR-CAPPINGRATEPRE sy-vline 
WA_REYC_CAPPING_RH_STR-CAPPINGAMNTPRE sy-vline 
WA_REYC_CAPPING_RH_STR-LESSAMNTRATEPRE sy-vline 
WA_REYC_CAPPING_RH_STR-CAPPINGINCRPRE sy-vline 
WA_REYC_CAPPING_RH_STR-INDEXPRE1 sy-vline 
WA_REYC_CAPPING_RH_STR-INDEXPRE2 sy-vline 
WA_REYC_CAPPING_RH_STR-INDEXPRE3 sy-vline 
WA_REYC_CAPPING_RH_STR-CUMULATIVEPRE sy-vline 
WA_REYC_CAPPING_RH_STR-CAPPINGRATEPOS sy-vline 
WA_REYC_CAPPING_RH_STR-CAPPINGAMNTPOS sy-vline 
WA_REYC_CAPPING_RH_STR-CAPPINGINCRPOS sy-vline 
WA_REYC_CAPPING_RH_STR-LESSAMNTRATEPOS sy-vline 
WA_REYC_CAPPING_RH_STR-INDEXPOS1 sy-vline 
WA_REYC_CAPPING_RH_STR-INDEXPOS2 sy-vline 
WA_REYC_CAPPING_RH_STR-INDEXPOS3 sy-vline 
WA_REYC_CAPPING_RH_STR-CUMULATIVEPOS sy-vline 
WA_REYC_CAPPING_RH_STR-FEINSPRE sy-vline 
WA_REYC_CAPPING_RH_STR-FEINSPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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