ABAP Select data from SAP table IKBLK_USER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IKBLK_USER
*  INTO TABLE @DATA(IT_IKBLK_USER2).
*--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_IKBLK_USER INDEX 1 INTO DATA(WA_IKBLK_USER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IKBLK_USER>-LOCSYS = 1.
<IKBLK_USER>-LOCSYSNSIC = 1.
<IKBLK_USER>-PAYSC = 1.
<IKBLK_USER>-FDUDT = 1.
<IKBLK_USER>-BUDEX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IKBLK_USER-ONACCKZ, sy-vline,
  WA_IKBLK_USER-ATEXT1, sy-vline,
  WA_IKBLK_USER-REFAO, sy-vline,
  WA_IKBLK_USER-PERSCH, sy-vline,
  WA_IKBLK_USER-LOCMANAG, sy-vline,
  WA_IKBLK_USER-GROUPNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IKBLK_USER 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_IKBLK_USER 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_IKBLK_USER INTO WA_IKBLK_USER.


*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_IKBLK_USER_STR, 
LOCSYS TYPE STRING,
LOCSYSNSIC TYPE STRING,
PAYSC TYPE STRING,
FDUDT TYPE STRING,
BUDEX TYPE STRING,
ONACCKZ TYPE STRING,
ATEXT1 TYPE STRING,
REFAO TYPE STRING,
PERSCH TYPE STRING,
LOCMANAG TYPE STRING,
GROUPNR TYPE STRING,
VERSION TYPE STRING,
CONTKZ TYPE STRING,
CONTDAT TYPE STRING,
CONTREG TYPE STRING,
PERSARC TYPE STRING,
INVCNR TYPE STRING,
INVCDT TYPE STRING,
INVCLC TYPE STRING,
PURONR TYPE STRING,
PURODT TYPE STRING,
PUROLC TYPE STRING,
CONTNR TYPE STRING,
CONTDT TYPE STRING,
CONTLC TYPE STRING,
DEMNR TYPE STRING,
DEMDT TYPE STRING,
DEMLC TYPE STRING,
FREPNR TYPE STRING,
FREPDT TYPE STRING,
FREPLC TYPE STRING,
REGLNR TYPE STRING,
REGLDT TYPE STRING,
REGLLC TYPE STRING,
AVISNR TYPE STRING,
AVISDT TYPE STRING,
AVISLC TYPE STRING,
OTHERNR TYPE STRING,
OTHERDT TYPE STRING,
OTHERLC TYPE STRING,
OTHERNR2 TYPE STRING,
OTHERDT2 TYPE STRING,
OTHERLC2 TYPE STRING,
CHANGINVOI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IKBLK_USER_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_IKBLK_USER_STR-LOCSYS sy-vline 
WA_IKBLK_USER_STR-LOCSYSNSIC sy-vline 
WA_IKBLK_USER_STR-PAYSC sy-vline 
WA_IKBLK_USER_STR-FDUDT sy-vline 
WA_IKBLK_USER_STR-BUDEX sy-vline 
WA_IKBLK_USER_STR-ONACCKZ sy-vline 
WA_IKBLK_USER_STR-ATEXT1 sy-vline 
WA_IKBLK_USER_STR-REFAO sy-vline 
WA_IKBLK_USER_STR-PERSCH sy-vline 
WA_IKBLK_USER_STR-LOCMANAG sy-vline 
WA_IKBLK_USER_STR-GROUPNR sy-vline 
WA_IKBLK_USER_STR-VERSION sy-vline 
WA_IKBLK_USER_STR-CONTKZ sy-vline 
WA_IKBLK_USER_STR-CONTDAT sy-vline 
WA_IKBLK_USER_STR-CONTREG sy-vline 
WA_IKBLK_USER_STR-PERSARC sy-vline 
WA_IKBLK_USER_STR-INVCNR sy-vline 
WA_IKBLK_USER_STR-INVCDT sy-vline 
WA_IKBLK_USER_STR-INVCLC sy-vline 
WA_IKBLK_USER_STR-PURONR sy-vline 
WA_IKBLK_USER_STR-PURODT sy-vline 
WA_IKBLK_USER_STR-PUROLC sy-vline 
WA_IKBLK_USER_STR-CONTNR sy-vline 
WA_IKBLK_USER_STR-CONTDT sy-vline 
WA_IKBLK_USER_STR-CONTLC sy-vline 
WA_IKBLK_USER_STR-DEMNR sy-vline 
WA_IKBLK_USER_STR-DEMDT sy-vline 
WA_IKBLK_USER_STR-DEMLC sy-vline 
WA_IKBLK_USER_STR-FREPNR sy-vline 
WA_IKBLK_USER_STR-FREPDT sy-vline 
WA_IKBLK_USER_STR-FREPLC sy-vline 
WA_IKBLK_USER_STR-REGLNR sy-vline 
WA_IKBLK_USER_STR-REGLDT sy-vline 
WA_IKBLK_USER_STR-REGLLC sy-vline 
WA_IKBLK_USER_STR-AVISNR sy-vline 
WA_IKBLK_USER_STR-AVISDT sy-vline 
WA_IKBLK_USER_STR-AVISLC sy-vline 
WA_IKBLK_USER_STR-OTHERNR sy-vline 
WA_IKBLK_USER_STR-OTHERDT sy-vline 
WA_IKBLK_USER_STR-OTHERLC sy-vline 
WA_IKBLK_USER_STR-OTHERNR2 sy-vline 
WA_IKBLK_USER_STR-OTHERDT2 sy-vline 
WA_IKBLK_USER_STR-OTHERLC2 sy-vline 
WA_IKBLK_USER_STR-CHANGINVOI sy-vline      INTO ld_text SEPARATED BY SPACE.

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