ABAP Select data from SAP table RCG_ESO_S_CHARACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCG_ESO_S_CHARACT
*  INTO TABLE @DATA(IT_RCG_ESO_S_CHARACT2).
*--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_RCG_ESO_S_CHARACT INDEX 1 INTO DATA(WA_RCG_ESO_S_CHARACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCG_ESO_S_CHARACT>-ERRORMODE = 1.
<RCG_ESO_S_CHARACT>-ERRORINFO = 1.
<RCG_ESO_S_CHARACT>-ERRORCLASS = 1.
<RCG_ESO_S_CHARACT>-ERRORPARAM = 1.
<RCG_ESO_S_CHARACT>-LOGLOCKMOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCG_ESO_S_CHARACT-EXTINFO, sy-vline,
  WA_RCG_ESO_S_CHARACT-LINEMOD, sy-vline,
  WA_RCG_ESO_S_CHARACT-OBJID, sy-vline,
  WA_RCG_ESO_S_CHARACT-OBJEK, sy-vline,
  WA_RCG_ESO_S_CHARACT-ATINN, sy-vline,
  WA_RCG_ESO_S_CHARACT-ATNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCG_ESO_S_CHARACT 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_RCG_ESO_S_CHARACT 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_RCG_ESO_S_CHARACT INTO WA_RCG_ESO_S_CHARACT.


*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 ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_RCG_ESO_S_CHARACT-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCG_ESO_S_CHARACT-ATINN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field ATAW1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCG_ESO_S_CHARACT-ATAW1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCG_ESO_S_CHARACT-ATAW1.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field ACTNROOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCG_ESO_S_CHARACT-ACTNROOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCG_ESO_S_CHARACT-ACTNROOT.
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_RCG_ESO_S_CHARACT_STR, 
ERRORMODE TYPE STRING,
ERRORINFO TYPE STRING,
ERRORCLASS TYPE STRING,
ERRORPARAM TYPE STRING,
LOGLOCKMOD TYPE STRING,
EXTINFO TYPE STRING,
LINEMOD TYPE STRING,
OBJID TYPE STRING,
OBJEK TYPE STRING,
ATINN TYPE STRING,
ATNAM TYPE STRING,
ATBEZ TYPE STRING,
ATZHL TYPE STRING,
ATWRT TYPE STRING,
ATWTB TYPE STRING,
ATFLV TYPE STRING,
ATAWE TYPE STRING,
ATFLB TYPE STRING,
ATAW1 TYPE STRING,
ATCOD TYPE STRING,
ATTLV TYPE STRING,
ATTLB TYPE STRING,
ATPRZ TYPE STRING,
ATINC TYPE STRING,
KNOBJ TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
ATWHI TYPE STRING,
ATZIS TYPE STRING,
ATSRT TYPE STRING,
ATAUT TYPE STRING,
RECNROOT TYPE STRING,
RECN_REFRH TYPE STRING,
FLG_IS_PHR TYPE STRING,
RECNTPH TYPE STRING,
FLG_VALFIX_DESCR TYPE STRING,
FLG_FUNC_CHECK TYPE STRING,
OBJTYPE TYPE STRING,
PROPERTY_UUID TYPE STRING,
OBJECT_ID TYPE STRING,
PHRKEY TYPE STRING,
ACTNROOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCG_ESO_S_CHARACT_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_RCG_ESO_S_CHARACT_STR-ERRORMODE sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ERRORINFO sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ERRORCLASS sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ERRORPARAM sy-vline 
WA_RCG_ESO_S_CHARACT_STR-LOGLOCKMOD sy-vline 
WA_RCG_ESO_S_CHARACT_STR-EXTINFO sy-vline 
WA_RCG_ESO_S_CHARACT_STR-LINEMOD sy-vline 
WA_RCG_ESO_S_CHARACT_STR-OBJID sy-vline 
WA_RCG_ESO_S_CHARACT_STR-OBJEK sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATINN sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATNAM sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATBEZ sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATZHL sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATWRT sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATWTB sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATFLV sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATAWE sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATFLB sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATAW1 sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATCOD sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATTLV sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATTLB sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATPRZ sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATINC sy-vline 
WA_RCG_ESO_S_CHARACT_STR-KNOBJ sy-vline 
WA_RCG_ESO_S_CHARACT_STR-DOKAR sy-vline 
WA_RCG_ESO_S_CHARACT_STR-DOKNR sy-vline 
WA_RCG_ESO_S_CHARACT_STR-DOKVR sy-vline 
WA_RCG_ESO_S_CHARACT_STR-DOKTL sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATWHI sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATZIS sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATSRT sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ATAUT sy-vline 
WA_RCG_ESO_S_CHARACT_STR-RECNROOT sy-vline 
WA_RCG_ESO_S_CHARACT_STR-RECN_REFRH sy-vline 
WA_RCG_ESO_S_CHARACT_STR-FLG_IS_PHR sy-vline 
WA_RCG_ESO_S_CHARACT_STR-RECNTPH sy-vline 
WA_RCG_ESO_S_CHARACT_STR-FLG_VALFIX_DESCR sy-vline 
WA_RCG_ESO_S_CHARACT_STR-FLG_FUNC_CHECK sy-vline 
WA_RCG_ESO_S_CHARACT_STR-OBJTYPE sy-vline 
WA_RCG_ESO_S_CHARACT_STR-PROPERTY_UUID sy-vline 
WA_RCG_ESO_S_CHARACT_STR-OBJECT_ID sy-vline 
WA_RCG_ESO_S_CHARACT_STR-PHRKEY sy-vline 
WA_RCG_ESO_S_CHARACT_STR-ACTNROOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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