ABAP Select data from SAP table PSHLP_WBS_MLST_ST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSHLP_WBS_MLST_ST
*  INTO TABLE @DATA(IT_PSHLP_WBS_MLST_ST2).
*--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_PSHLP_WBS_MLST_ST INDEX 1 INTO DATA(WA_PSHLP_WBS_MLST_ST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSHLP_WBS_MLST_ST>-MLSTN = 1.
<PSHLP_WBS_MLST_ST>-POSID = 1.
<PSHLP_WBS_MLST_ST>-POST1 = 1.
<PSHLP_WBS_MLST_ST>-KZ_LSTWR = 1.
<PSHLP_WBS_MLST_ST>-KZ_FAKTP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSHLP_WBS_MLST_ST-KZ_TREND, sy-vline,
  WA_PSHLP_WBS_MLST_ST-LST_FERTG, sy-vline,
  WA_PSHLP_WBS_MLST_ST-FPROZ, sy-vline,
  WA_PSHLP_WBS_MLST_ST-EDATU, sy-vline,
  WA_PSHLP_WBS_MLST_ST-TEDAT, sy-vline,
  WA_PSHLP_WBS_MLST_ST-PDATU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSHLP_WBS_MLST_ST 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_PSHLP_WBS_MLST_ST 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_PSHLP_WBS_MLST_ST INTO WA_PSHLP_WBS_MLST_ST.


*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 ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_WBS_MLST_ST-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_WBS_MLST_ST-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DELTE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSHLP_WBS_MLST_ST-DELTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSHLP_WBS_MLST_ST-DELTE.
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_PSHLP_WBS_MLST_ST_STR, 
MLSTN TYPE STRING,
POSID TYPE STRING,
POST1 TYPE STRING,
KZ_LSTWR TYPE STRING,
KZ_FAKTP TYPE STRING,
KZ_TREND TYPE STRING,
LST_FERTG TYPE STRING,
FPROZ TYPE STRING,
EDATU TYPE STRING,
TEDAT TYPE STRING,
PDATU TYPE STRING,
TPDAT TYPE STRING,
LST_ACTDT TYPE STRING,
DLTAS TYPE STRING,
DELTA TYPE STRING,
DELTE TYPE STRING,
PRCNT TYPE STRING,
BEGRU TYPE STRING,
USERH TYPE STRING,
USERV TYPE STRING,
DATEH TYPE STRING,
DATEV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSHLP_WBS_MLST_ST_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_PSHLP_WBS_MLST_ST_STR-MLSTN sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-POSID sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-POST1 sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-KZ_LSTWR sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-KZ_FAKTP sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-KZ_TREND sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-LST_FERTG sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-FPROZ sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-EDATU sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-TEDAT sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-PDATU sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-TPDAT sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-LST_ACTDT sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-DLTAS sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-DELTA sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-DELTE sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-PRCNT sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-BEGRU sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-USERH sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-USERV sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-DATEH sy-vline 
WA_PSHLP_WBS_MLST_ST_STR-DATEV sy-vline      INTO ld_text SEPARATED BY SPACE.

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