ABAP Select data from SAP table P24_AWH_MAIN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P24_AWH_MAIN 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 P24_AWH_MAIN. 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 P24_AWH_MAIN 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_P24_AWH_MAIN TYPE STANDARD TABLE OF P24_AWH_MAIN,
      WA_P24_AWH_MAIN TYPE P24_AWH_MAIN,
      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: <P24_AWH_MAIN> TYPE P24_AWH_MAIN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P24_AWH_MAIN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P24_AWH_MAIN
  INTO TABLE IT_P24_AWH_MAIN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P24_AWH_MAIN
*  INTO TABLE @DATA(IT_P24_AWH_MAIN2).
*--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_P24_AWH_MAIN INDEX 1 INTO DATA(WA_P24_AWH_MAIN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P24_AWH_MAIN ASSIGNING <P24_AWH_MAIN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P24_AWH_MAIN>-STAT = 1.
<P24_AWH_MAIN>-PERNR = 1.
<P24_AWH_MAIN>-CNAME = 1.
<P24_AWH_MAIN>-PRVAL = 1.
<P24_AWH_MAIN>-CRVAL = 1.

ENDLOOP.

LOOP AT IT_P24_AWH_MAIN INTO WA_P24_AWH_MAIN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P24_AWH_MAIN-BLVAL, sy-vline,
  WA_P24_AWH_MAIN-PAYMD, sy-vline,
  WA_P24_AWH_MAIN-ESTDT, sy-vline,
  WA_P24_AWH_MAIN-WAERS, sy-vline,
  WA_P24_AWH_MAIN-STYLE, sy-vline,
  WA_P24_AWH_MAIN-BEGDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P24_AWH_MAIN 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_P24_AWH_MAIN 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_P24_AWH_MAIN INTO WA_P24_AWH_MAIN.


*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_P24_AWH_MAIN_STR, 
STAT TYPE STRING,
PERNR TYPE STRING,
CNAME TYPE STRING,
PRVAL TYPE STRING,
CRVAL TYPE STRING,
BLVAL TYPE STRING,
PAYMD TYPE STRING,
ESTDT TYPE STRING,
WAERS TYPE STRING,
STYLE TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P24_AWH_MAIN_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_P24_AWH_MAIN_STR-STAT sy-vline 
WA_P24_AWH_MAIN_STR-PERNR sy-vline 
WA_P24_AWH_MAIN_STR-CNAME sy-vline 
WA_P24_AWH_MAIN_STR-PRVAL sy-vline 
WA_P24_AWH_MAIN_STR-CRVAL sy-vline 
WA_P24_AWH_MAIN_STR-BLVAL sy-vline 
WA_P24_AWH_MAIN_STR-PAYMD sy-vline 
WA_P24_AWH_MAIN_STR-ESTDT sy-vline 
WA_P24_AWH_MAIN_STR-WAERS sy-vline 
WA_P24_AWH_MAIN_STR-STYLE sy-vline 
WA_P24_AWH_MAIN_STR-BEGDA sy-vline 
WA_P24_AWH_MAIN_STR-ENDDA sy-vline      INTO ld_text SEPARATED BY SPACE.

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