ABAP Select data from SAP table UMR_YS_RCATG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UMR_YS_RCATG
*  INTO TABLE @DATA(IT_UMR_YS_RCATG2).
*--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_UMR_YS_RCATG INDEX 1 INTO DATA(WA_UMR_YS_RCATG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UMR_YS_RCATG>-RCATG = 1.
<UMR_YS_RCATG>-LANGU = 1.
<UMR_YS_RCATG>-OBJSTAT = 1.
<UMR_YS_RCATG>-CONTREL = 1.
<UMR_YS_RCATG>-CONTTIMESTMP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UMR_YS_RCATG-OWNER, sy-vline,
  WA_UMR_YS_RCATG-BWAPPL, sy-vline,
  WA_UMR_YS_RCATG-ACTIVFL, sy-vline,
  WA_UMR_YS_RCATG-TSTPNM, sy-vline,
  WA_UMR_YS_RCATG-TIMESTMP, sy-vline,
  WA_UMR_YS_RCATG-DOC_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UMR_YS_RCATG 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_UMR_YS_RCATG 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_UMR_YS_RCATG INTO WA_UMR_YS_RCATG.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_UMR_YS_RCATG-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UMR_YS_RCATG-LANGU.
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_UMR_YS_RCATG_STR, 
RCATG TYPE STRING,
LANGU TYPE STRING,
OBJSTAT TYPE STRING,
CONTREL TYPE STRING,
CONTTIMESTMP TYPE STRING,
OWNER TYPE STRING,
BWAPPL TYPE STRING,
ACTIVFL TYPE STRING,
TSTPNM TYPE STRING,
TIMESTMP TYPE STRING,
DOC_ID TYPE STRING,
MTXT TYPE STRING,
LTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UMR_YS_RCATG_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_UMR_YS_RCATG_STR-RCATG sy-vline 
WA_UMR_YS_RCATG_STR-LANGU sy-vline 
WA_UMR_YS_RCATG_STR-OBJSTAT sy-vline 
WA_UMR_YS_RCATG_STR-CONTREL sy-vline 
WA_UMR_YS_RCATG_STR-CONTTIMESTMP sy-vline 
WA_UMR_YS_RCATG_STR-OWNER sy-vline 
WA_UMR_YS_RCATG_STR-BWAPPL sy-vline 
WA_UMR_YS_RCATG_STR-ACTIVFL sy-vline 
WA_UMR_YS_RCATG_STR-TSTPNM sy-vline 
WA_UMR_YS_RCATG_STR-TIMESTMP sy-vline 
WA_UMR_YS_RCATG_STR-DOC_ID sy-vline 
WA_UMR_YS_RCATG_STR-MTXT sy-vline 
WA_UMR_YS_RCATG_STR-LTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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