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

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/PB_MLKEY_STR
*  INTO TABLE @DATA(IT_/SAPAPO/PB_MLKEY_STR2).
*--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/PB_MLKEY_STR INDEX 1 INTO DATA(WA_/SAPAPO/PB_MLKEY_STR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/PB_MLKEY_STR>-MANDT = 1.
</SAPAPO/PB_MLKEY_STR>-MVIEW = 1.
</SAPAPO/PB_MLKEY_STR>-IOBJNM = 1.
</SAPAPO/PB_MLKEY_STR>-VRSIOID = 1.
</SAPAPO/PB_MLKEY_STR>-DIMENSION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/PB_MLKEY_STR-CHANM, sy-vline,
  WA_/SAPAPO/PB_MLKEY_STR-CHASEL, sy-vline,
  WA_/SAPAPO/PB_MLKEY_STR-FIELDNM, sy-vline,
  WA_/SAPAPO/PB_MLKEY_STR-DTELNM, sy-vline,
  WA_/SAPAPO/PB_MLKEY_STR-CHKTAB, sy-vline,
  WA_/SAPAPO/PB_MLKEY_STR-DATATP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/PB_MLKEY_STR 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/PB_MLKEY_STR 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/PB_MLKEY_STR INTO WA_/SAPAPO/PB_MLKEY_STR.


*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 VRSIO, internal->external for field VRSIOID
CALL FUNCTION 'CONVERSION_EXIT_VRSIO_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/PB_MLKEY_STR-VRSIOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/PB_MLKEY_STR-VRSIOID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DTYPE, internal->external for field DATATP
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/PB_MLKEY_STR-DATATP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/PB_MLKEY_STR-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/PB_MLKEY_STR_STR, 
MANDT TYPE STRING,
MVIEW TYPE STRING,
IOBJNM TYPE STRING,
VRSIOID 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,
FLG_FIX TYPE STRING,
FLG_FIXABLE TYPE STRING,
FLG_ANTEI TYPE STRING,
IOBJNM_FIX TYPE STRING,
IOBJNM_DISAGG TYPE STRING,
KEYFIGURE_TYPE TYPE STRING,
ACCURACY TYPE STRING,
KEYF_SAV TYPE STRING,
KEYF_INDEX TYPE STRING,
LTEXT TYPE STRING,
FUNCTION TYPE STRING,
LINETYPE TYPE STRING,
FLG_UOM TYPE STRING,
UOM_PLAN TYPE STRING,
STWAE TYPE STRING,
UOM_ADOPT TYPE STRING,
EVENT_TYPE TYPE STRING,
LABEL_VALUE TYPE STRING,
FREET TYPE STRING,
ADV_MACRO TYPE STRING,
NEG_NOT_ALLOWED TYPE STRING,
FIX_ZEROS TYPE STRING,
CALC_INIT_FLAGS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/PB_MLKEY_STR_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/PB_MLKEY_STR_STR-MANDT sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-MVIEW sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-IOBJNM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-VRSIOID sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-DIMENSION sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CHANM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CHASEL sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FIELDNM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-DTELNM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CHKTAB sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-DATATP sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-INTLEN sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CONVEXIT sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FVALEX sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-LOWERCASE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-INTTP sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-DECIMALS sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-DIGITS sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-OUTPUTLEN sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-POSIT sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-MASK sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-MASKLEN sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-TXTSH sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-TXTLG sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CHABASNM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CMPSTA sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-TIMDEPFL sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-SIDFIELDNM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-ATRNAVFL sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-KYFTP sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-UNINM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FLG_VRSIO sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-KEYID sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-ATTRIBFL sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-BASE_IOBJNM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FLG_FIX sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FLG_FIXABLE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FLG_ANTEI sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-IOBJNM_FIX sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-IOBJNM_DISAGG sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-KEYFIGURE_TYPE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-ACCURACY sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-KEYF_SAV sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-KEYF_INDEX sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-LTEXT sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FUNCTION sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-LINETYPE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FLG_UOM sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-UOM_PLAN sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-STWAE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-UOM_ADOPT sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-EVENT_TYPE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-LABEL_VALUE sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FREET sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-ADV_MACRO sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-NEG_NOT_ALLOWED sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-FIX_ZEROS sy-vline 
WA_/SAPAPO/PB_MLKEY_STR_STR-CALC_INIT_FLAGS sy-vline      INTO ld_text SEPARATED BY SPACE.

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