ABAP Select data from SAP table E101MDS_EI_PURCHASING_DATAX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E101MDS_EI_PURCHASING_DATAX 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 E101MDS_EI_PURCHASING_DATAX. 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 E101MDS_EI_PURCHASING_DATAX 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_E101MDS_EI_PURCHASING_DATAX TYPE STANDARD TABLE OF E101MDS_EI_PURCHASING_DATAX,
      WA_E101MDS_EI_PURCHASING_DATAX TYPE E101MDS_EI_PURCHASING_DATAX,
      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: <E101MDS_EI_PURCHASING_DATAX> TYPE E101MDS_EI_PURCHASING_DATAX.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E101MDS_EI_PURCHASING_DATAX.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E101MDS_EI_PURCHASING_DATAX
  INTO TABLE IT_E101MDS_EI_PURCHASING_DATAX.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E101MDS_EI_PURCHASING_DATAX
*  INTO TABLE @DATA(IT_E101MDS_EI_PURCHASING_DATAX2).
*--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_E101MDS_EI_PURCHASING_DATAX INDEX 1 INTO DATA(WA_E101MDS_EI_PURCHASING_DATAX2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E101MDS_EI_PURCHASING_DATAX ASSIGNING <E101MDS_EI_PURCHASING_DATAX>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E101MDS_EI_PURCHASING_DATAX>-APPL_SNAME = 1.
<E101MDS_EI_PURCHASING_DATAX>-SPERM = 1.
<E101MDS_EI_PURCHASING_DATAX>-LOEVM = 1.
<E101MDS_EI_PURCHASING_DATAX>-LFABC = 1.
<E101MDS_EI_PURCHASING_DATAX>-WAERS = 1.

ENDLOOP.

LOOP AT IT_E101MDS_EI_PURCHASING_DATAX INTO WA_E101MDS_EI_PURCHASING_DATAX.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E101MDS_EI_PURCHASING_DATAX-VERKF, sy-vline,
  WA_E101MDS_EI_PURCHASING_DATAX-TELF1, sy-vline,
  WA_E101MDS_EI_PURCHASING_DATAX-MINBW, sy-vline,
  WA_E101MDS_EI_PURCHASING_DATAX-ZTERM, sy-vline,
  WA_E101MDS_EI_PURCHASING_DATAX-INCO1, sy-vline,
  WA_E101MDS_EI_PURCHASING_DATAX-INCO2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E101MDS_EI_PURCHASING_DATAX 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_E101MDS_EI_PURCHASING_DATAX 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_E101MDS_EI_PURCHASING_DATAX INTO WA_E101MDS_EI_PURCHASING_DATAX.


*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_E101MDS_EI_PURCHASING_DATAX_STR, 
APPL_SNAME TYPE STRING,
SPERM TYPE STRING,
LOEVM TYPE STRING,
LFABC TYPE STRING,
WAERS TYPE STRING,
VERKF TYPE STRING,
TELF1 TYPE STRING,
MINBW TYPE STRING,
ZTERM TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
WEBRE TYPE STRING,
KZABS TYPE STRING,
KALSK TYPE STRING,
KZAUT TYPE STRING,
EXPVZ TYPE STRING,
ZOLLA TYPE STRING,
MEPRF TYPE STRING,
EKGRP TYPE STRING,
BOLRE TYPE STRING,
UMSAE TYPE STRING,
XERSY TYPE STRING,
PLIFZ TYPE STRING,
MRPPP TYPE STRING,
LFRHY TYPE STRING,
LIBES TYPE STRING,
LIPRE TYPE STRING,
LISER TYPE STRING,
BOIND TYPE STRING,
PRFRE TYPE STRING,
NRGEW TYPE STRING,
BLIND TYPE STRING,
SKRIT TYPE STRING,
BSTAE TYPE STRING,
RDPRF TYPE STRING,
MEGRU TYPE STRING,
VENSL TYPE STRING,
BOPNR TYPE STRING,
XERSR TYPE STRING,
EIKTO TYPE STRING,
PAPRF TYPE STRING,
AGREL TYPE STRING,
XNBWY TYPE STRING,
VSBED TYPE STRING,
LEBRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E101MDS_EI_PURCHASING_DATAX_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_E101MDS_EI_PURCHASING_DATAX_STR-APPL_SNAME sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-SPERM sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LOEVM sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LFABC sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-WAERS sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-VERKF sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-TELF1 sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-MINBW sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-ZTERM sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-INCO1 sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-INCO2 sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-WEBRE sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-KZABS sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-KALSK sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-KZAUT sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-EXPVZ sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-ZOLLA sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-MEPRF sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-EKGRP sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-BOLRE sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-UMSAE sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-XERSY sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-PLIFZ sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-MRPPP sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LFRHY sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LIBES sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LIPRE sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LISER sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-BOIND sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-PRFRE sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-NRGEW sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-BLIND sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-SKRIT sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-BSTAE sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-RDPRF sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-MEGRU sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-VENSL sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-BOPNR sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-XERSR sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-EIKTO sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-PAPRF sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-AGREL sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-XNBWY sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-VSBED sy-vline 
WA_E101MDS_EI_PURCHASING_DATAX_STR-LEBRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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