ABAP Select data from SAP table EMG_SAPRE_BDC_TE420_AUTO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EMG_SAPRE_BDC_TE420_AUTO 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 EMG_SAPRE_BDC_TE420_AUTO. 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 EMG_SAPRE_BDC_TE420_AUTO 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_EMG_SAPRE_BDC_TE420_AUTO TYPE STANDARD TABLE OF EMG_SAPRE_BDC_TE420_AUTO,
      WA_EMG_SAPRE_BDC_TE420_AUTO TYPE EMG_SAPRE_BDC_TE420_AUTO,
      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: <EMG_SAPRE_BDC_TE420_AUTO> TYPE EMG_SAPRE_BDC_TE420_AUTO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EMG_SAPRE_BDC_TE420_AUTO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EMG_SAPRE_BDC_TE420_AUTO
  INTO TABLE IT_EMG_SAPRE_BDC_TE420_AUTO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMG_SAPRE_BDC_TE420_AUTO
*  INTO TABLE @DATA(IT_EMG_SAPRE_BDC_TE420_AUTO2).
*--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_EMG_SAPRE_BDC_TE420_AUTO INDEX 1 INTO DATA(WA_EMG_SAPRE_BDC_TE420_AUTO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EMG_SAPRE_BDC_TE420_AUTO ASSIGNING <EMG_SAPRE_BDC_TE420_AUTO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMG_SAPRE_BDC_TE420_AUTO>-DATA = 1.
<EMG_SAPRE_BDC_TE420_AUTO>-TCODE = 1.
<EMG_SAPRE_BDC_TE420_AUTO>-SCHLUESS1 = 1.
<EMG_SAPRE_BDC_TE420_AUTO>-TERMTEXT = 1.
<EMG_SAPRE_BDC_TE420_AUTO>-PARASATZ = 1.

ENDLOOP.

LOOP AT IT_EMG_SAPRE_BDC_TE420_AUTO INTO WA_EMG_SAPRE_BDC_TE420_AUTO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMG_SAPRE_BDC_TE420_AUTO-TERMERST, sy-vline,
  WA_EMG_SAPRE_BDC_TE420_AUTO-ABRDATS, sy-vline,
  WA_EMG_SAPRE_BDC_TE420_AUTO-DATUMDF, sy-vline,
  WA_EMG_SAPRE_BDC_TE420_AUTO-PERIODEW, sy-vline,
  WA_EMG_SAPRE_BDC_TE420_AUTO-ZUORDDAT, sy-vline,
  WA_EMG_SAPRE_BDC_TE420_AUTO-WORK_DAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMG_SAPRE_BDC_TE420_AUTO 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_EMG_SAPRE_BDC_TE420_AUTO 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_EMG_SAPRE_BDC_TE420_AUTO INTO WA_EMG_SAPRE_BDC_TE420_AUTO.


*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_EMG_SAPRE_BDC_TE420_AUTO_STR, 
DATA TYPE STRING,
TCODE TYPE STRING,
SCHLUESS1 TYPE STRING,
TERMTEXT TYPE STRING,
PARASATZ TYPE STRING,
TERMERST TYPE STRING,
ABRDATS TYPE STRING,
DATUMDF TYPE STRING,
PERIODEW TYPE STRING,
ZUORDDAT TYPE STRING,
WORK_DAY TYPE STRING,
THGDAT TYPE STRING,
IDENT TYPE STRING,
SAPKAL TYPE STRING,
ABSZYKTER1 TYPE STRING,
ANZFAELL1 TYPE STRING,
ABSZYKTER2 TYPE STRING,
ANZFAELL2 TYPE STRING,
ABSZYKTER3 TYPE STRING,
ANZFAELL3 TYPE STRING,
ABSZYKTER4 TYPE STRING,
ANZFAELL4 TYPE STRING,
ABSZYKTER5 TYPE STRING,
ANZFAELL5 TYPE STRING,
ABSZYK TYPE STRING,
VERTRKL1 TYPE STRING,
SPARTENTY1 TYPE STRING,
VERTRKL2 TYPE STRING,
SPARTENTY2 TYPE STRING,
VERTRKL3 TYPE STRING,
SPARTENTY3 TYPE STRING,
VERTRKL4 TYPE STRING,
SPARTENTY4 TYPE STRING,
VERTRKL5 TYPE STRING,
PERIODED TYPE STRING,
PTOLERTO TYPE STRING,
PTOLERFROM TYPE STRING,
SPARTENTY5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMG_SAPRE_BDC_TE420_AUTO_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_EMG_SAPRE_BDC_TE420_AUTO_STR-DATA sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-TCODE sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SCHLUESS1 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-TERMTEXT sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-PARASATZ sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-TERMERST sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABRDATS sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-DATUMDF sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-PERIODEW sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ZUORDDAT sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-WORK_DAY sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-THGDAT sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-IDENT sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SAPKAL sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABSZYKTER1 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ANZFAELL1 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABSZYKTER2 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ANZFAELL2 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABSZYKTER3 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ANZFAELL3 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABSZYKTER4 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ANZFAELL4 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABSZYKTER5 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ANZFAELL5 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-ABSZYK sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-VERTRKL1 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SPARTENTY1 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-VERTRKL2 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SPARTENTY2 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-VERTRKL3 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SPARTENTY3 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-VERTRKL4 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SPARTENTY4 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-VERTRKL5 sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-PERIODED sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-PTOLERTO sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-PTOLERFROM sy-vline 
WA_EMG_SAPRE_BDC_TE420_AUTO_STR-SPARTENTY5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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