ABAP Select data from SAP table RCGWWICONFIG 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 RCGWWICONFIG 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 RCGWWICONFIG. 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 RCGWWICONFIG 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_RCGWWICONFIG TYPE STANDARD TABLE OF RCGWWICONFIG,
      WA_RCGWWICONFIG TYPE RCGWWICONFIG,
      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: <RCGWWICONFIG> TYPE RCGWWICONFIG.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGWWICONFIG
*  INTO TABLE @DATA(IT_RCGWWICONFIG2).
*--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_RCGWWICONFIG INDEX 1 INTO DATA(WA_RCGWWICONFIG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGWWICONFIG>-COL_PHRA = 1.
<RCGWWICONFIG>-COL_SYM = 1.
<RCGWWICONFIG>-COL_REPGRP = 1.
<RCGWWICONFIG>-COL_BLANK = 1.
<RCGWWICONFIG>-COL_CONDTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGWWICONFIG-COL_IF, sy-vline,
  WA_RCGWWICONFIG-COL_INCL, sy-vline,
  WA_RCGWWICONFIG-COLORMETA, sy-vline,
  WA_RCGWWICONFIG-SYMNAME, sy-vline,
  WA_RCGWWICONFIG-PHRACAT, sy-vline,
  WA_RCGWWICONFIG-PHRAGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGWWICONFIG 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_RCGWWICONFIG 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_RCGWWICONFIG INTO WA_RCGWWICONFIG.


*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 CHRID, internal->external for field LDEPID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_RCGWWICONFIG-LDEPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGWWICONFIG-LDEPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPEC1, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_RCGWWICONFIG-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGWWICONFIG-SUBID.
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_RCGWWICONFIG_STR, 
COL_PHRA TYPE STRING,
COL_SYM TYPE STRING,
COL_REPGRP TYPE STRING,
COL_BLANK TYPE STRING,
COL_CONDTXT TYPE STRING,
COL_IF TYPE STRING,
COL_INCL TYPE STRING,
COLORMETA TYPE STRING,
SYMNAME TYPE STRING,
PHRACAT TYPE STRING,
PHRAGRP TYPE STRING,
SYMDESC TYPE STRING,
PHRDESC TYPE STRING,
SELMARK TYPE STRING,
SELTXTCOL TYPE STRING,
SELSHADE TYPE STRING,
SELFRAMELFT TYPE STRING,
LDEPID TYPE STRING,
SUBID TYPE STRING,
WIZ_SEP TYPE STRING,
WIZ_FORMHEAD TYPE STRING,
WIZ_FORMSYM TYPE STRING,
WIZ_FORMPHR TYPE STRING,
WIZ_WIDTHLFTMEA TYPE STRING,
WIZ_WIDTHSEPMEA TYPE STRING,
WIZ_WIDTHLFTCOL TYPE STRING,
WIZ_WIDTHSEPCOL TYPE STRING,
WIZ_SHADEHEAD TYPE STRING,
WIZ_SHADEDATA TYPE STRING,
WIZ_HEADLNTYPE TYPE STRING,
WIZ_HEADLNWDTH TYPE STRING,
WIZ_DATALNTYPE TYPE STRING,
WIZ_DATALNWDTH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGWWICONFIG_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_RCGWWICONFIG_STR-COL_PHRA sy-vline 
WA_RCGWWICONFIG_STR-COL_SYM sy-vline 
WA_RCGWWICONFIG_STR-COL_REPGRP sy-vline 
WA_RCGWWICONFIG_STR-COL_BLANK sy-vline 
WA_RCGWWICONFIG_STR-COL_CONDTXT sy-vline 
WA_RCGWWICONFIG_STR-COL_IF sy-vline 
WA_RCGWWICONFIG_STR-COL_INCL sy-vline 
WA_RCGWWICONFIG_STR-COLORMETA sy-vline 
WA_RCGWWICONFIG_STR-SYMNAME sy-vline 
WA_RCGWWICONFIG_STR-PHRACAT sy-vline 
WA_RCGWWICONFIG_STR-PHRAGRP sy-vline 
WA_RCGWWICONFIG_STR-SYMDESC sy-vline 
WA_RCGWWICONFIG_STR-PHRDESC sy-vline 
WA_RCGWWICONFIG_STR-SELMARK sy-vline 
WA_RCGWWICONFIG_STR-SELTXTCOL sy-vline 
WA_RCGWWICONFIG_STR-SELSHADE sy-vline 
WA_RCGWWICONFIG_STR-SELFRAMELFT sy-vline 
WA_RCGWWICONFIG_STR-LDEPID sy-vline 
WA_RCGWWICONFIG_STR-SUBID sy-vline 
WA_RCGWWICONFIG_STR-WIZ_SEP sy-vline 
WA_RCGWWICONFIG_STR-WIZ_FORMHEAD sy-vline 
WA_RCGWWICONFIG_STR-WIZ_FORMSYM sy-vline 
WA_RCGWWICONFIG_STR-WIZ_FORMPHR sy-vline 
WA_RCGWWICONFIG_STR-WIZ_WIDTHLFTMEA sy-vline 
WA_RCGWWICONFIG_STR-WIZ_WIDTHSEPMEA sy-vline 
WA_RCGWWICONFIG_STR-WIZ_WIDTHLFTCOL sy-vline 
WA_RCGWWICONFIG_STR-WIZ_WIDTHSEPCOL sy-vline 
WA_RCGWWICONFIG_STR-WIZ_SHADEHEAD sy-vline 
WA_RCGWWICONFIG_STR-WIZ_SHADEDATA sy-vline 
WA_RCGWWICONFIG_STR-WIZ_HEADLNTYPE sy-vline 
WA_RCGWWICONFIG_STR-WIZ_HEADLNWDTH sy-vline 
WA_RCGWWICONFIG_STR-WIZ_DATALNTYPE sy-vline 
WA_RCGWWICONFIG_STR-WIZ_DATALNWDTH sy-vline      INTO ld_text SEPARATED BY SPACE.

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