ABAP Select data from SAP table PUA_P2_MILIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PUA_P2_MILIT 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 PUA_P2_MILIT. 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 PUA_P2_MILIT 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_PUA_P2_MILIT TYPE STANDARD TABLE OF PUA_P2_MILIT,
      WA_PUA_P2_MILIT TYPE PUA_P2_MILIT,
      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: <PUA_P2_MILIT> TYPE PUA_P2_MILIT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PUA_P2_MILIT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PUA_P2_MILIT
  INTO TABLE IT_PUA_P2_MILIT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PUA_P2_MILIT
*  INTO TABLE @DATA(IT_PUA_P2_MILIT2).
*--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_PUA_P2_MILIT INDEX 1 INTO DATA(WA_PUA_P2_MILIT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PUA_P2_MILIT ASSIGNING <PUA_P2_MILIT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PUA_P2_MILIT>-PERNR = 1.
<PUA_P2_MILIT>-INN = 1.
<PUA_P2_MILIT>-SCNUM = 1.
<PUA_P2_MILIT>-WDBH2 = 1.
<PUA_P2_MILIT>-CDBH2 = 1.

ENDLOOP.

LOOP AT IT_PUA_P2_MILIT INTO WA_PUA_P2_MILIT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PUA_P2_MILIT-WDBHD, sy-vline,
  WA_PUA_P2_MILIT-WDGRP, sy-vline,
  WA_PUA_P2_MILIT-WDKAT, sy-vline,
  WA_PUA_P2_MILIT-WDSTV, sy-vline,
  WA_PUA_P2_MILIT-WDSTF, sy-vline,
  WA_PUA_P2_MILIT-WDUSP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PUA_P2_MILIT 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_PUA_P2_MILIT 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_PUA_P2_MILIT INTO WA_PUA_P2_MILIT.


*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_PUA_P2_MILIT_STR, 
PERNR TYPE STRING,
INN TYPE STRING,
SCNUM TYPE STRING,
WDBH2 TYPE STRING,
CDBH2 TYPE STRING,
WDBHD TYPE STRING,
WDGRP TYPE STRING,
WDKAT TYPE STRING,
WDSTV TYPE STRING,
WDSTF TYPE STRING,
WDUSP TYPE STRING,
WDSPU TYPE STRING,
WDPFL TYPE STRING,
CDGRP TYPE STRING,
CDKAT TYPE STRING,
CDSTV TYPE STRING,
CDSTF TYPE STRING,
CDUSP TYPE STRING,
CDSPU TYPE STRING,
CDPFL TYPE STRING,
CDBHD TYPE STRING,
WDUFF TYPE STRING,
WDSPO TYPE STRING,
CDSPO TYPE STRING,
CDDRA TYPE STRING,
WDDRA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PUA_P2_MILIT_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_PUA_P2_MILIT_STR-PERNR sy-vline 
WA_PUA_P2_MILIT_STR-INN sy-vline 
WA_PUA_P2_MILIT_STR-SCNUM sy-vline 
WA_PUA_P2_MILIT_STR-WDBH2 sy-vline 
WA_PUA_P2_MILIT_STR-CDBH2 sy-vline 
WA_PUA_P2_MILIT_STR-WDBHD sy-vline 
WA_PUA_P2_MILIT_STR-WDGRP sy-vline 
WA_PUA_P2_MILIT_STR-WDKAT sy-vline 
WA_PUA_P2_MILIT_STR-WDSTV sy-vline 
WA_PUA_P2_MILIT_STR-WDSTF sy-vline 
WA_PUA_P2_MILIT_STR-WDUSP sy-vline 
WA_PUA_P2_MILIT_STR-WDSPU sy-vline 
WA_PUA_P2_MILIT_STR-WDPFL sy-vline 
WA_PUA_P2_MILIT_STR-CDGRP sy-vline 
WA_PUA_P2_MILIT_STR-CDKAT sy-vline 
WA_PUA_P2_MILIT_STR-CDSTV sy-vline 
WA_PUA_P2_MILIT_STR-CDSTF sy-vline 
WA_PUA_P2_MILIT_STR-CDUSP sy-vline 
WA_PUA_P2_MILIT_STR-CDSPU sy-vline 
WA_PUA_P2_MILIT_STR-CDPFL sy-vline 
WA_PUA_P2_MILIT_STR-CDBHD sy-vline 
WA_PUA_P2_MILIT_STR-WDUFF sy-vline 
WA_PUA_P2_MILIT_STR-WDSPO sy-vline 
WA_PUA_P2_MILIT_STR-CDSPO sy-vline 
WA_PUA_P2_MILIT_STR-CDDRA sy-vline 
WA_PUA_P2_MILIT_STR-WDDRA sy-vline      INTO ld_text SEPARATED BY SPACE.

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