ABAP Select data from SAP table ATP_EKET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ATP_EKET
*  INTO TABLE @DATA(IT_ATP_EKET2).
*--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_ATP_EKET INDEX 1 INTO DATA(WA_ATP_EKET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ATP_EKET>-MANDT = 1.
<ATP_EKET>-EBELN = 1.
<ATP_EKET>-EBELP = 1.
<ATP_EKET>-ETENR = 1.
<ATP_EKET>-LOEKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ATP_EKET-STATU, sy-vline,
  WA_ATP_EKET-MATNR, sy-vline,
  WA_ATP_EKET-WERKS, sy-vline,
  WA_ATP_EKET-LGORT, sy-vline,
  WA_ATP_EKET-MEINS, sy-vline,
  WA_ATP_EKET-UMREZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ATP_EKET 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_ATP_EKET 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_ATP_EKET INTO WA_ATP_EKET.


*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 EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATP_EKET-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_EKET-EBELN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ATP_EKET-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_EKET-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSP, internal->external for field DISUB_PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_ATP_EKET-DISUB_PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_EKET-DISUB_PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field DISUB_OWNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ATP_EKET-DISUB_OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ATP_EKET-DISUB_OWNER.
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_ATP_EKET_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ETENR TYPE STRING,
LOEKZ TYPE STRING,
STATU TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MEINS TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
WEBAZ TYPE STRING,
BWTAR TYPE STRING,
ELIKZ TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
BSTYP TYPE STRING,
SOBKZ TYPE STRING,
ARSNR TYPE STRING,
RETPO TYPE STRING,
EINDT TYPE STRING,
MENGE TYPE STRING,
WEMNG TYPE STRING,
DABMG TYPE STRING,
CHARG TYPE STRING,
EMLIF TYPE STRING,
LBLKZ TYPE STRING,
STAPO TYPE STRING,
INSMK TYPE STRING,
GLMNG TYPE STRING,
ELDAT TYPE STRING,
NODISP TYPE STRING,
FIXMG TYPE STRING,
SGT_SCAT TYPE STRING,
EGLKZ TYPE STRING,
DISUB_SOBKZ TYPE STRING,
DISUB_PSPNR TYPE STRING,
DISUB_KUNNR TYPE STRING,
DISUB_VBELN TYPE STRING,
DISUB_POSNR TYPE STRING,
DISUB_OWNER TYPE STRING,
SERRU TYPE STRING,
FSH_RALLOC_QTY TYPE STRING,
FSH_SALLOC_QTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ATP_EKET_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_ATP_EKET_STR-MANDT sy-vline 
WA_ATP_EKET_STR-EBELN sy-vline 
WA_ATP_EKET_STR-EBELP sy-vline 
WA_ATP_EKET_STR-ETENR sy-vline 
WA_ATP_EKET_STR-LOEKZ sy-vline 
WA_ATP_EKET_STR-STATU sy-vline 
WA_ATP_EKET_STR-MATNR sy-vline 
WA_ATP_EKET_STR-WERKS sy-vline 
WA_ATP_EKET_STR-LGORT sy-vline 
WA_ATP_EKET_STR-MEINS sy-vline 
WA_ATP_EKET_STR-UMREZ sy-vline 
WA_ATP_EKET_STR-UMREN sy-vline 
WA_ATP_EKET_STR-WEBAZ sy-vline 
WA_ATP_EKET_STR-BWTAR sy-vline 
WA_ATP_EKET_STR-ELIKZ sy-vline 
WA_ATP_EKET_STR-PSTYP sy-vline 
WA_ATP_EKET_STR-KNTTP sy-vline 
WA_ATP_EKET_STR-BSTYP sy-vline 
WA_ATP_EKET_STR-SOBKZ sy-vline 
WA_ATP_EKET_STR-ARSNR sy-vline 
WA_ATP_EKET_STR-RETPO sy-vline 
WA_ATP_EKET_STR-EINDT sy-vline 
WA_ATP_EKET_STR-MENGE sy-vline 
WA_ATP_EKET_STR-WEMNG sy-vline 
WA_ATP_EKET_STR-DABMG sy-vline 
WA_ATP_EKET_STR-CHARG sy-vline 
WA_ATP_EKET_STR-EMLIF sy-vline 
WA_ATP_EKET_STR-LBLKZ sy-vline 
WA_ATP_EKET_STR-STAPO sy-vline 
WA_ATP_EKET_STR-INSMK sy-vline 
WA_ATP_EKET_STR-GLMNG sy-vline 
WA_ATP_EKET_STR-ELDAT sy-vline 
WA_ATP_EKET_STR-NODISP sy-vline 
WA_ATP_EKET_STR-FIXMG sy-vline 
WA_ATP_EKET_STR-SGT_SCAT sy-vline 
WA_ATP_EKET_STR-EGLKZ sy-vline 
WA_ATP_EKET_STR-DISUB_SOBKZ sy-vline 
WA_ATP_EKET_STR-DISUB_PSPNR sy-vline 
WA_ATP_EKET_STR-DISUB_KUNNR sy-vline 
WA_ATP_EKET_STR-DISUB_VBELN sy-vline 
WA_ATP_EKET_STR-DISUB_POSNR sy-vline 
WA_ATP_EKET_STR-DISUB_OWNER sy-vline 
WA_ATP_EKET_STR-SERRU sy-vline 
WA_ATP_EKET_STR-FSH_RALLOC_QTY sy-vline 
WA_ATP_EKET_STR-FSH_SALLOC_QTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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