ABAP Select data from SAP table MMPUR_PRINT_CDSHW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_PRINT_CDSHW
*  INTO TABLE @DATA(IT_MMPUR_PRINT_CDSHW2).
*--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_MMPUR_PRINT_CDSHW INDEX 1 INTO DATA(WA_MMPUR_PRINT_CDSHW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_PRINT_CDSHW>-TABNAME = 1.
<MMPUR_PRINT_CDSHW>-TABKEY = 1.
<MMPUR_PRINT_CDSHW>-KEYLEN = 1.
<MMPUR_PRINT_CDSHW>-CHNGIND = 1.
<MMPUR_PRINT_CDSHW>-FNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_PRINT_CDSHW-FTEXT, sy-vline,
  WA_MMPUR_PRINT_CDSHW-TEXTART, sy-vline,
  WA_MMPUR_PRINT_CDSHW-SPRACHE, sy-vline,
  WA_MMPUR_PRINT_CDSHW-TEXT_CASE, sy-vline,
  WA_MMPUR_PRINT_CDSHW-OUTLEN, sy-vline,
  WA_MMPUR_PRINT_CDSHW-F_OLD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_PRINT_CDSHW 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_MMPUR_PRINT_CDSHW 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_MMPUR_PRINT_CDSHW INTO WA_MMPUR_PRINT_CDSHW.


*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 SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_PRINT_CDSHW-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_PRINT_CDSHW-SPRACHE.
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_MMPUR_PRINT_CDSHW_STR, 
TABNAME TYPE STRING,
TABKEY TYPE STRING,
KEYLEN TYPE STRING,
CHNGIND TYPE STRING,
FNAME TYPE STRING,
FTEXT TYPE STRING,
TEXTART TYPE STRING,
SPRACHE TYPE STRING,
TEXT_CASE TYPE STRING,
OUTLEN TYPE STRING,
F_OLD TYPE STRING,
F_NEW TYPE STRING,
KEYGUID TYPE STRING,
TABKEY254 TYPE STRING,
EXT_KEYLEN TYPE STRING,
KEYGUID_STR TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
ETENR TYPE STRING,
CTXNR TYPE STRING,
ROUNR TYPE STRING,
INSERT TYPE STRING,
FLAG_ADRNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_PRINT_CDSHW_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_MMPUR_PRINT_CDSHW_STR-TABNAME sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-TABKEY sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-KEYLEN sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-CHNGIND sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-FNAME sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-FTEXT sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-TEXTART sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-SPRACHE sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-TEXT_CASE sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-OUTLEN sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-F_OLD sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-F_NEW sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-KEYGUID sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-TABKEY254 sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-EXT_KEYLEN sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-KEYGUID_STR sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-EBELP sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-ZEKKN sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-ETENR sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-CTXNR sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-ROUNR sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-INSERT sy-vline 
WA_MMPUR_PRINT_CDSHW_STR-FLAG_ADRNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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