ABAP Select data from SAP table EMG_EKUN_INIT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EMG_EKUN_INIT 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_EKUN_INIT. 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_EKUN_INIT 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_EKUN_INIT TYPE STANDARD TABLE OF EMG_EKUN_INIT,
      WA_EMG_EKUN_INIT TYPE EMG_EKUN_INIT,
      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_EKUN_INIT> TYPE EMG_EKUN_INIT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMG_EKUN_INIT
*  INTO TABLE @DATA(IT_EMG_EKUN_INIT2).
*--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_EKUN_INIT INDEX 1 INTO DATA(WA_EMG_EKUN_INIT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMG_EKUN_INIT>-PARTNER = 1.
<EMG_EKUN_INIT>-MUSTER_KUN = 1.
<EMG_EKUN_INIT>-BU_RLTYP = 1.
<EMG_EKUN_INIT>-BU_TYPE = 1.
<EMG_EKUN_INIT>-BU_GROUP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMG_EKUN_INIT-BPKIND, sy-vline,
  WA_EMG_EKUN_INIT-BPEXT, sy-vline,
  WA_EMG_EKUN_INIT-RLTP2, sy-vline,
  WA_EMG_EKUN_INIT-RLTP3, sy-vline,
  WA_EMG_EKUN_INIT-RLTP4, sy-vline,
  WA_EMG_EKUN_INIT-RLTP5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMG_EKUN_INIT 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_EKUN_INIT 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_EKUN_INIT INTO WA_EMG_EKUN_INIT.


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

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

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

*Conversion exit ALPHA, internal->external for field LIFNR_EXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMG_EKUN_INIT-LIFNR_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMG_EKUN_INIT-LIFNR_EXT.
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_EMG_EKUN_INIT_STR, 
PARTNER TYPE STRING,
MUSTER_KUN TYPE STRING,
BU_RLTYP TYPE STRING,
BU_TYPE TYPE STRING,
BU_GROUP TYPE STRING,
BPKIND TYPE STRING,
BPEXT TYPE STRING,
RLTP2 TYPE STRING,
RLTP3 TYPE STRING,
RLTP4 TYPE STRING,
RLTP5 TYPE STRING,
RLTP6 TYPE STRING,
RLTP7 TYPE STRING,
RLTP8 TYPE STRING,
RLTP9 TYPE STRING,
ROLE1 TYPE STRING,
ROLE2 TYPE STRING,
ROLE3 TYPE STRING,
ROLE4 TYPE STRING,
ROLE5 TYPE STRING,
ROLE6 TYPE STRING,
ROLE7 TYPE STRING,
ROLE8 TYPE STRING,
ROLE9 TYPE STRING,
VALID_FROM_1 TYPE STRING,
VALID_TO_1 TYPE STRING,
CHIND_1 TYPE STRING,
VALID_FROM_2 TYPE STRING,
VALID_TO_2 TYPE STRING,
CHIND_2 TYPE STRING,
VALID_FROM_3 TYPE STRING,
VALID_TO_3 TYPE STRING,
CHIND_3 TYPE STRING,
VALID_FROM_4 TYPE STRING,
VALID_TO_4 TYPE STRING,
CHIND_4 TYPE STRING,
VALID_FROM_5 TYPE STRING,
VALID_TO_5 TYPE STRING,
CHIND_5 TYPE STRING,
VALID_FROM_6 TYPE STRING,
VALID_TO_6 TYPE STRING,
CHIND_6 TYPE STRING,
VALID_FROM_7 TYPE STRING,
VALID_TO_7 TYPE STRING,
CHIND_7 TYPE STRING,
VALID_FROM_8 TYPE STRING,
VALID_TO_8 TYPE STRING,
CHIND_8 TYPE STRING,
VALID_FROM_9 TYPE STRING,
VALID_TO_9 TYPE STRING,
CHIND_9 TYPE STRING,
VALDT TYPE STRING,
VALID_DATE_CDATA TYPE STRING,
VALID_FROM_CDATA TYPE STRING,
VALID_TO_CDATA TYPE STRING,
FIBUKRS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
KUNNR_EXT TYPE STRING,
LIFNR_EXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMG_EKUN_INIT_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_EKUN_INIT_STR-PARTNER sy-vline 
WA_EMG_EKUN_INIT_STR-MUSTER_KUN sy-vline 
WA_EMG_EKUN_INIT_STR-BU_RLTYP sy-vline 
WA_EMG_EKUN_INIT_STR-BU_TYPE sy-vline 
WA_EMG_EKUN_INIT_STR-BU_GROUP sy-vline 
WA_EMG_EKUN_INIT_STR-BPKIND sy-vline 
WA_EMG_EKUN_INIT_STR-BPEXT sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP2 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP3 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP4 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP5 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP6 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP7 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP8 sy-vline 
WA_EMG_EKUN_INIT_STR-RLTP9 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE1 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE2 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE3 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE4 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE5 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE6 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE7 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE8 sy-vline 
WA_EMG_EKUN_INIT_STR-ROLE9 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_1 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_1 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_1 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_2 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_2 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_2 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_3 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_3 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_3 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_4 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_4 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_4 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_5 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_5 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_5 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_6 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_6 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_6 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_7 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_7 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_7 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_8 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_8 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_8 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_9 sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_9 sy-vline 
WA_EMG_EKUN_INIT_STR-CHIND_9 sy-vline 
WA_EMG_EKUN_INIT_STR-VALDT sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_DATE_CDATA sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_FROM_CDATA sy-vline 
WA_EMG_EKUN_INIT_STR-VALID_TO_CDATA sy-vline 
WA_EMG_EKUN_INIT_STR-FIBUKRS sy-vline 
WA_EMG_EKUN_INIT_STR-VKORG sy-vline 
WA_EMG_EKUN_INIT_STR-VTWEG sy-vline 
WA_EMG_EKUN_INIT_STR-SPART sy-vline 
WA_EMG_EKUN_INIT_STR-KUNNR_EXT sy-vline 
WA_EMG_EKUN_INIT_STR-LIFNR_EXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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