ABAP Select data from SAP table MGV_V_PICPS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MGV_V_PICPS
*  INTO TABLE @DATA(IT_MGV_V_PICPS2).
*--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_MGV_V_PICPS INDEX 1 INTO DATA(WA_MGV_V_PICPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MGV_V_PICPS>-MANDT = 1.
<MGV_V_PICPS>-PICNUM = 1.
<MGV_V_PICPS>-PICKEY = 1.
<MGV_V_PICPS>-PICCAT = 1.
<MGV_V_PICPS>-PICPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MGV_V_PICPS-COUNTER, sy-vline,
  WA_MGV_V_PICPS-MATNR, sy-vline,
  WA_MGV_V_PICPS-LOEKZ, sy-vline,
  WA_MGV_V_PICPS-SEQNR, sy-vline,
  WA_MGV_V_PICPS-DATFR, sy-vline,
  WA_MGV_V_PICPS-INTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MGV_V_PICPS 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_MGV_V_PICPS 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_MGV_V_PICPS INTO WA_MGV_V_PICPS.


*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 ALPHA, internal->external for field PICNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MGV_V_PICPS-PICNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_V_PICPS-PICNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MGV_V_PICPS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_V_PICPS-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNL, internal->external for field MATNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_MATNL_OUTPUT'
  EXPORTING
    input =                      WA_MGV_V_PICPS-MATNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_V_PICPS-MATNR_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATNW, internal->external for field MATNR_VERS
CALL FUNCTION 'CONVERSION_EXIT_MATNW_OUTPUT'
  EXPORTING
    input =                      WA_MGV_V_PICPS-MATNR_VERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MGV_V_PICPS-MATNR_VERS.
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_MGV_V_PICPS_STR, 
MANDT TYPE STRING,
PICNUM TYPE STRING,
PICKEY TYPE STRING,
PICCAT TYPE STRING,
PICPOS TYPE STRING,
COUNTER TYPE STRING,
MATNR TYPE STRING,
LOEKZ TYPE STRING,
SEQNR TYPE STRING,
DATFR TYPE STRING,
INTTYPE TYPE STRING,
PICCODE TYPE STRING,
HERDAT TYPE STRING,
HERNAM TYPE STRING,
HAEDAT TYPE STRING,
HAENAM TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
MATNR_EXT TYPE STRING,
MATNR_VERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MGV_V_PICPS_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_MGV_V_PICPS_STR-MANDT sy-vline 
WA_MGV_V_PICPS_STR-PICNUM sy-vline 
WA_MGV_V_PICPS_STR-PICKEY sy-vline 
WA_MGV_V_PICPS_STR-PICCAT sy-vline 
WA_MGV_V_PICPS_STR-PICPOS sy-vline 
WA_MGV_V_PICPS_STR-COUNTER sy-vline 
WA_MGV_V_PICPS_STR-MATNR sy-vline 
WA_MGV_V_PICPS_STR-LOEKZ sy-vline 
WA_MGV_V_PICPS_STR-SEQNR sy-vline 
WA_MGV_V_PICPS_STR-DATFR sy-vline 
WA_MGV_V_PICPS_STR-INTTYPE sy-vline 
WA_MGV_V_PICPS_STR-PICCODE sy-vline 
WA_MGV_V_PICPS_STR-HERDAT sy-vline 
WA_MGV_V_PICPS_STR-HERNAM sy-vline 
WA_MGV_V_PICPS_STR-HAEDAT sy-vline 
WA_MGV_V_PICPS_STR-HAENAM sy-vline 
WA_MGV_V_PICPS_STR-ERDAT sy-vline 
WA_MGV_V_PICPS_STR-ERNAM sy-vline 
WA_MGV_V_PICPS_STR-AEDAT sy-vline 
WA_MGV_V_PICPS_STR-AENAM sy-vline 
WA_MGV_V_PICPS_STR-MATNR_EXT sy-vline 
WA_MGV_V_PICPS_STR-MATNR_VERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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