ABAP Select data from SAP table EDESK_DMS_CSTDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDESK_DMS_CSTDOC
*  INTO TABLE @DATA(IT_EDESK_DMS_CSTDOC2).
*--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_EDESK_DMS_CSTDOC INDEX 1 INTO DATA(WA_EDESK_DMS_CSTDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDESK_DMS_CSTDOC>-DOKAR = 1.
<EDESK_DMS_CSTDOC>-DOKNR = 1.
<EDESK_DMS_CSTDOC>-DOKVR = 1.
<EDESK_DMS_CSTDOC>-DOKTL = 1.
<EDESK_DMS_CSTDOC>-REVLV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDESK_DMS_CSTDOC-DKTXT, sy-vline,
  WA_EDESK_DMS_CSTDOC-STABK, sy-vline,
  WA_EDESK_DMS_CSTDOC-DOSTX, sy-vline,
  WA_EDESK_DMS_CSTDOC-LABOR, sy-vline,
  WA_EDESK_DMS_CSTDOC-LOEDK, sy-vline,
  WA_EDESK_DMS_CSTDOC-STLTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDESK_DMS_CSTDOC 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_EDESK_DMS_CSTDOC 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_EDESK_DMS_CSTDOC INTO WA_EDESK_DMS_CSTDOC.


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

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_EDESK_DMS_CSTDOC-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDESK_DMS_CSTDOC-REVLV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_EDESK_DMS_CSTDOC-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDESK_DMS_CSTDOC-STLNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_EDESK_DMS_CSTDOC-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDESK_DMS_CSTDOC-LTXSP.
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_EDESK_DMS_CSTDOC_STR, 
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
REVLV TYPE STRING,
DKTXT TYPE STRING,
STABK TYPE STRING,
DOSTX TYPE STRING,
LABOR TYPE STRING,
LOEDK TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAN TYPE STRING,
STLAL TYPE STRING,
BMENG TYPE STRING,
BMEIN TYPE STRING,
EMENG TYPE STRING,
ALTST TYPE STRING,
VARST TYPE STRING,
KBAUS TYPE STRING,
DATUV TYPE STRING,
DATUB TYPE STRING,
AENNR TYPE STRING,
LOEKZ TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
LTXSP TYPE STRING,
STKTX TYPE STRING,
STLST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDESK_DMS_CSTDOC_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_EDESK_DMS_CSTDOC_STR-DOKAR sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DOKNR sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DOKVR sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DOKTL sy-vline 
WA_EDESK_DMS_CSTDOC_STR-REVLV sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DKTXT sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STABK sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DOSTX sy-vline 
WA_EDESK_DMS_CSTDOC_STR-LABOR sy-vline 
WA_EDESK_DMS_CSTDOC_STR-LOEDK sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STLTY sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STLNR sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STLAN sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STLAL sy-vline 
WA_EDESK_DMS_CSTDOC_STR-BMENG sy-vline 
WA_EDESK_DMS_CSTDOC_STR-BMEIN sy-vline 
WA_EDESK_DMS_CSTDOC_STR-EMENG sy-vline 
WA_EDESK_DMS_CSTDOC_STR-ALTST sy-vline 
WA_EDESK_DMS_CSTDOC_STR-VARST sy-vline 
WA_EDESK_DMS_CSTDOC_STR-KBAUS sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DATUV sy-vline 
WA_EDESK_DMS_CSTDOC_STR-DATUB sy-vline 
WA_EDESK_DMS_CSTDOC_STR-AENNR sy-vline 
WA_EDESK_DMS_CSTDOC_STR-LOEKZ sy-vline 
WA_EDESK_DMS_CSTDOC_STR-ANDAT sy-vline 
WA_EDESK_DMS_CSTDOC_STR-ANNAM sy-vline 
WA_EDESK_DMS_CSTDOC_STR-AEDAT sy-vline 
WA_EDESK_DMS_CSTDOC_STR-AENAM sy-vline 
WA_EDESK_DMS_CSTDOC_STR-LTXSP sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STKTX sy-vline 
WA_EDESK_DMS_CSTDOC_STR-STLST sy-vline      INTO ld_text SEPARATED BY SPACE.

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