ABAP Select data from SAP table PMEPV 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 PMEPV 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 PMEPV. 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 PMEPV 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_PMEPV TYPE STANDARD TABLE OF PMEPV,
      WA_PMEPV TYPE PMEPV,
      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: <PMEPV> TYPE PMEPV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMEPV
*  INTO TABLE @DATA(IT_PMEPV2).
*--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_PMEPV INDEX 1 INTO DATA(WA_PMEPV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMEPV>-MOLGA = 1.
<PMEPV>-BUKRS = 1.
<PMEPV>-WERKS = 1.
<PMEPV>-BTRTL = 1.
<PMEPV>-PERSG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMEPV-PERSK, sy-vline,
  WA_PMEPV-VDSK1, sy-vline,
  WA_PMEPV-ANSVH, sy-vline,
  WA_PMEPV-TRFAR, sy-vline,
  WA_PMEPV-TRFGB, sy-vline,
  WA_PMEPV-TRFGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMEPV 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_PMEPV 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_PMEPV INTO WA_PMEPV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PMEPV_STR, 
MOLGA TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
VDSK1 TYPE STRING,
ANSVH TYPE STRING,
TRFAR TYPE STRING,
TRFGB TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
TRFKZ TYPE STRING,
ASVGR TYPE STRING,
AUSVA TYPE STRING,
AUBGR TYPE STRING,
VGLTA TYPE STRING,
VGLGB TYPE STRING,
VGLTG TYPE STRING,
VGLST TYPE STRING,
INFTY TYPE STRING,
SUBTY TYPE STRING,
ASVTR TYPE STRING,
ASVAN TYPE STRING,
ASVTG TYPE STRING,
SAPZS TYPE STRING,
ANTSX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMEPV_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_PMEPV_STR-MOLGA sy-vline 
WA_PMEPV_STR-BUKRS sy-vline 
WA_PMEPV_STR-WERKS sy-vline 
WA_PMEPV_STR-BTRTL sy-vline 
WA_PMEPV_STR-PERSG sy-vline 
WA_PMEPV_STR-PERSK sy-vline 
WA_PMEPV_STR-VDSK1 sy-vline 
WA_PMEPV_STR-ANSVH sy-vline 
WA_PMEPV_STR-TRFAR sy-vline 
WA_PMEPV_STR-TRFGB sy-vline 
WA_PMEPV_STR-TRFGR sy-vline 
WA_PMEPV_STR-TRFST sy-vline 
WA_PMEPV_STR-TRFKZ sy-vline 
WA_PMEPV_STR-ASVGR sy-vline 
WA_PMEPV_STR-AUSVA sy-vline 
WA_PMEPV_STR-AUBGR sy-vline 
WA_PMEPV_STR-VGLTA sy-vline 
WA_PMEPV_STR-VGLGB sy-vline 
WA_PMEPV_STR-VGLTG sy-vline 
WA_PMEPV_STR-VGLST sy-vline 
WA_PMEPV_STR-INFTY sy-vline 
WA_PMEPV_STR-SUBTY sy-vline 
WA_PMEPV_STR-ASVTR sy-vline 
WA_PMEPV_STR-ASVAN sy-vline 
WA_PMEPV_STR-ASVTG sy-vline 
WA_PMEPV_STR-SAPZS sy-vline 
WA_PMEPV_STR-ANTSX sy-vline      INTO ld_text SEPARATED BY SPACE.

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