ABAP Select data from SAP table RCGSDERROR 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 RCGSDERROR 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 RCGSDERROR. 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 RCGSDERROR 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_RCGSDERROR TYPE STANDARD TABLE OF RCGSDERROR,
      WA_RCGSDERROR TYPE RCGSDERROR,
      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: <RCGSDERROR> TYPE RCGSDERROR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGSDERROR
*  INTO TABLE @DATA(IT_RCGSDERROR2).
*--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_RCGSDERROR INDEX 1 INTO DATA(WA_RCGSDERROR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGSDERROR>-ERR_REASON = 1.
<RCGSDERROR>-ID = 1.
<RCGSDERROR>-COUNTRY = 1.
<RCGSDERROR>-REGION = 1.
<RCGSDERROR>-LANGU = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGSDERROR-MATNR, sy-vline,
  WA_RCGSDERROR-MATNAM, sy-vline,
  WA_RCGSDERROR-RAWMATNR, sy-vline,
  WA_RCGSDERROR-VALDAT, sy-vline,
  WA_RCGSDERROR-RECN, sy-vline,
  WA_RCGSDERROR-DEL_CAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGSDERROR 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_RCGSDERROR 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_RCGSDERROR INTO WA_RCGSDERROR.


*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 ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCGSDERROR-ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGSDERROR-ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RCGSDERROR-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGSDERROR-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCGSDERROR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGSDERROR-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RAWMATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCGSDERROR-RAWMATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGSDERROR-RAWMATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field DEL_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCGSDERROR-DEL_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGSDERROR-DEL_ID.
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_RCGSDERROR_STR, 
ERR_REASON TYPE STRING,
ID TYPE STRING,
COUNTRY TYPE STRING,
REGION TYPE STRING,
LANGU TYPE STRING,
MATNR TYPE STRING,
MATNAM TYPE STRING,
RAWMATNR TYPE STRING,
VALDAT TYPE STRING,
RECN TYPE STRING,
DEL_CAT TYPE STRING,
DEL_ID TYPE STRING,
POS_NR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGSDERROR_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_RCGSDERROR_STR-ERR_REASON sy-vline 
WA_RCGSDERROR_STR-ID sy-vline 
WA_RCGSDERROR_STR-COUNTRY sy-vline 
WA_RCGSDERROR_STR-REGION sy-vline 
WA_RCGSDERROR_STR-LANGU sy-vline 
WA_RCGSDERROR_STR-MATNR sy-vline 
WA_RCGSDERROR_STR-MATNAM sy-vline 
WA_RCGSDERROR_STR-RAWMATNR sy-vline 
WA_RCGSDERROR_STR-VALDAT sy-vline 
WA_RCGSDERROR_STR-RECN sy-vline 
WA_RCGSDERROR_STR-DEL_CAT sy-vline 
WA_RCGSDERROR_STR-DEL_ID sy-vline 
WA_RCGSDERROR_STR-POS_NR sy-vline      INTO ld_text SEPARATED BY SPACE.

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