ABAP Select data from SAP table /SAPAPO/DM_INT_CHARS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/DM_INT_CHARS 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 /SAPAPO/DM_INT_CHARS. 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 /SAPAPO/DM_INT_CHARS 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_/SAPAPO/DM_INT_CHARS TYPE STANDARD TABLE OF /SAPAPO/DM_INT_CHARS,
      WA_/SAPAPO/DM_INT_CHARS TYPE /SAPAPO/DM_INT_CHARS,
      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: </SAPAPO/DM_INT_CHARS> TYPE /SAPAPO/DM_INT_CHARS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/DM_INT_CHARS
  INTO TABLE IT_/SAPAPO/DM_INT_CHARS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/DM_INT_CHARS
*  INTO TABLE @DATA(IT_/SAPAPO/DM_INT_CHARS2).
*--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_/SAPAPO/DM_INT_CHARS INDEX 1 INTO DATA(WA_/SAPAPO/DM_INT_CHARS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/DM_INT_CHARS ASSIGNING </SAPAPO/DM_INT_CHARS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/DM_INT_CHARS>-IOBJNM = 1.
</SAPAPO/DM_INT_CHARS>-DIMENSION = 1.
</SAPAPO/DM_INT_CHARS>-CHANM = 1.
</SAPAPO/DM_INT_CHARS>-CHASEL = 1.
</SAPAPO/DM_INT_CHARS>-FIELDNM = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/DM_INT_CHARS INTO WA_/SAPAPO/DM_INT_CHARS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/DM_INT_CHARS-DTELNM, sy-vline,
  WA_/SAPAPO/DM_INT_CHARS-CHKTAB, sy-vline,
  WA_/SAPAPO/DM_INT_CHARS-DATATP, sy-vline,
  WA_/SAPAPO/DM_INT_CHARS-INTLEN, sy-vline,
  WA_/SAPAPO/DM_INT_CHARS-CONVEXIT, sy-vline,
  WA_/SAPAPO/DM_INT_CHARS-FVALEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/DM_INT_CHARS 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_/SAPAPO/DM_INT_CHARS 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_/SAPAPO/DM_INT_CHARS INTO WA_/SAPAPO/DM_INT_CHARS.


*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 DTYPE, internal->external for field DATATP
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/DM_INT_CHARS-DATATP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/DM_INT_CHARS-DATATP.
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_/SAPAPO/DM_INT_CHARS_STR, 
IOBJNM TYPE STRING,
DIMENSION TYPE STRING,
CHANM TYPE STRING,
CHASEL TYPE STRING,
FIELDNM TYPE STRING,
DTELNM TYPE STRING,
CHKTAB TYPE STRING,
DATATP TYPE STRING,
INTLEN TYPE STRING,
CONVEXIT TYPE STRING,
FVALEX TYPE STRING,
LOWERCASE TYPE STRING,
INTTP TYPE STRING,
DECIMALS TYPE STRING,
DIGITS TYPE STRING,
OUTPUTLEN TYPE STRING,
POSIT TYPE STRING,
MASK TYPE STRING,
MASKLEN TYPE STRING,
TXTSH TYPE STRING,
TXTLG TYPE STRING,
CHABASNM TYPE STRING,
CMPSTA TYPE STRING,
TIMDEPFL TYPE STRING,
SIDFIELDNM TYPE STRING,
ATRNAVFL TYPE STRING,
KYFTP TYPE STRING,
UNINM TYPE STRING,
FLG_VRSIO TYPE STRING,
KEYID TYPE STRING,
ATTRIBFL TYPE STRING,
BASE_IOBJNM TYPE STRING,
ATRNAVNM TYPE STRING,
SURROGAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/DM_INT_CHARS_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_/SAPAPO/DM_INT_CHARS_STR-IOBJNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-DIMENSION sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-CHANM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-CHASEL sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-FIELDNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-DTELNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-CHKTAB sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-DATATP sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-INTLEN sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-CONVEXIT sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-FVALEX sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-LOWERCASE sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-INTTP sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-DECIMALS sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-DIGITS sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-OUTPUTLEN sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-POSIT sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-MASK sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-MASKLEN sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-TXTSH sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-TXTLG sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-CHABASNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-CMPSTA sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-TIMDEPFL sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-SIDFIELDNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-ATRNAVFL sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-KYFTP sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-UNINM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-FLG_VRSIO sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-KEYID sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-ATTRIBFL sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-BASE_IOBJNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-ATRNAVNM sy-vline 
WA_/SAPAPO/DM_INT_CHARS_STR-SURROGAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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