ABAP Select data from SAP table EWASSDCONTRACT_LIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWASSDCONTRACT_LIST
*  INTO TABLE @DATA(IT_EWASSDCONTRACT_LIST2).
*--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_EWASSDCONTRACT_LIST INDEX 1 INTO DATA(WA_EWASSDCONTRACT_LIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWASSDCONTRACT_LIST>-SYS_PKEY = 1.
<EWASSDCONTRACT_LIST>-SYS_MARKED = 1.
<EWASSDCONTRACT_LIST>-VBELN = 1.
<EWASSDCONTRACT_LIST>-VKORG = 1.
<EWASSDCONTRACT_LIST>-VTWEG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWASSDCONTRACT_LIST-SPART, sy-vline,
  WA_EWASSDCONTRACT_LIST-KUNNR, sy-vline,
  WA_EWASSDCONTRACT_LIST-KTEXT, sy-vline,
  WA_EWASSDCONTRACT_LIST-GUEBG, sy-vline,
  WA_EWASSDCONTRACT_LIST-GUEEN, sy-vline,
  WA_EWASSDCONTRACT_LIST-NETWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWASSDCONTRACT_LIST 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_EWASSDCONTRACT_LIST 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_EWASSDCONTRACT_LIST INTO WA_EWASSDCONTRACT_LIST.


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

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

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_EWASSDCONTRACT_LIST-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASSDCONTRACT_LIST-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EWASSDCONTRACT_LIST-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWASSDCONTRACT_LIST-VKONT.
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_EWASSDCONTRACT_LIST_STR, 
SYS_PKEY TYPE STRING,
SYS_MARKED TYPE STRING,
VBELN TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUNNR TYPE STRING,
KTEXT TYPE STRING,
GUEBG TYPE STRING,
GUEEN TYPE STRING,
NETWR TYPE STRING,
WAERK TYPE STRING,
PRODUCT TYPE STRING,
FAKSK TYPE STRING,
EMMASTATUS TYPE STRING,
AUART TYPE STRING,
BSTNK TYPE STRING,
ANGDT TYPE STRING,
BNDDT TYPE STRING,
VKONT TYPE STRING,
KUN_NAME1 TYPE STRING,
KUN_ADDRESS TYPE STRING,
GROSSWR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWASSDCONTRACT_LIST_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_EWASSDCONTRACT_LIST_STR-SYS_PKEY sy-vline 
WA_EWASSDCONTRACT_LIST_STR-SYS_MARKED sy-vline 
WA_EWASSDCONTRACT_LIST_STR-VBELN sy-vline 
WA_EWASSDCONTRACT_LIST_STR-VKORG sy-vline 
WA_EWASSDCONTRACT_LIST_STR-VTWEG sy-vline 
WA_EWASSDCONTRACT_LIST_STR-SPART sy-vline 
WA_EWASSDCONTRACT_LIST_STR-KUNNR sy-vline 
WA_EWASSDCONTRACT_LIST_STR-KTEXT sy-vline 
WA_EWASSDCONTRACT_LIST_STR-GUEBG sy-vline 
WA_EWASSDCONTRACT_LIST_STR-GUEEN sy-vline 
WA_EWASSDCONTRACT_LIST_STR-NETWR sy-vline 
WA_EWASSDCONTRACT_LIST_STR-WAERK sy-vline 
WA_EWASSDCONTRACT_LIST_STR-PRODUCT sy-vline 
WA_EWASSDCONTRACT_LIST_STR-FAKSK sy-vline 
WA_EWASSDCONTRACT_LIST_STR-EMMASTATUS sy-vline 
WA_EWASSDCONTRACT_LIST_STR-AUART sy-vline 
WA_EWASSDCONTRACT_LIST_STR-BSTNK sy-vline 
WA_EWASSDCONTRACT_LIST_STR-ANGDT sy-vline 
WA_EWASSDCONTRACT_LIST_STR-BNDDT sy-vline 
WA_EWASSDCONTRACT_LIST_STR-VKONT sy-vline 
WA_EWASSDCONTRACT_LIST_STR-KUN_NAME1 sy-vline 
WA_EWASSDCONTRACT_LIST_STR-KUN_ADDRESS sy-vline 
WA_EWASSDCONTRACT_LIST_STR-GROSSWR sy-vline      INTO ld_text SEPARATED BY SPACE.

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