ABAP Select data from SAP table EKBNK_N into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKBNK_N
*  INTO TABLE @DATA(IT_EKBNK_N2).
*--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_EKBNK_N INDEX 1 INTO DATA(WA_EKBNK_N2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKBNK_N>-CMENGE = 1.
<EKBNK_N>-CWERT = 1.
<EKBNK_N>-EBELN = 1.
<EKBNK_N>-EBELP = 1.
<EKBNK_N>-STUNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKBNK_N-ZAEHK, sy-vline,
  WA_EKBNK_N-KWERT, sy-vline,
  WA_EKBNK_N-KWRFW, sy-vline,
  WA_EKBNK_N-WAERS, sy-vline,
  WA_EKBNK_N-HWAER, sy-vline,
  WA_EKBNK_N-REWAE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKBNK_N 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_EKBNK_N 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_EKBNK_N INTO WA_EKBNK_N.


*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_EKBNK_N-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKBNK_N-EBELN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EXCRT, internal->external for field WKURS_GR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_EKBNK_N-WKURS_GR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKBNK_N-WKURS_GR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field WKURS_IR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_EKBNK_N-WKURS_IR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKBNK_N-WKURS_IR.
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_EKBNK_N_STR, 
CMENGE TYPE STRING,
CWERT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
KWERT TYPE STRING,
KWRFW TYPE STRING,
WAERS TYPE STRING,
HWAER TYPE STRING,
REWAE TYPE STRING,
KVSL1 TYPE STRING,
KVSL2 TYPE STRING,
LIFNR TYPE STRING,
FRWMG TYPE STRING,
FRWWR TYPE STRING,
FRWFR TYPE STRING,
FRRMG TYPE STRING,
FRRWR TYPE STRING,
FRRFR TYPE STRING,
FRAWE TYPE STRING,
FRAWW TYPE STRING,
XBLNR TYPE STRING,
FRBNR TYPE STRING,
KSCHL TYPE STRING,
VTEXT TYPE STRING,
BEWTP TYPE STRING,
FRERF TYPE STRING,
NAWMG TYPE STRING,
NAWWR TYPE STRING,
NAWFR TYPE STRING,
FNWMG TYPE STRING,
FNWWR TYPE STRING,
FNWFR TYPE STRING,
RETPO TYPE STRING,
VOBNK TYPE STRING,
BPFRW TYPE STRING,
BPFRR TYPE STRING,
BPNAW TYPE STRING,
BPFNW TYPE STRING,
XBPRM TYPE STRING,
VNETW TYPE STRING,
VMENG TYPE STRING,
BNKTK TYPE STRING,
PREDC TYPE STRING,
FRAWB TYPE STRING,
FRRWB TYPE STRING,
XBESW TYPE STRING,
KUDIF TYPE STRING,
KUDIF_GR TYPE STRING,
KUDIF_IR TYPE STRING,
KUFIX TYPE STRING,
XHISTMA TYPE STRING,
WKURS_GR TYPE STRING,
WKURS_IR TYPE STRING,
PARKED_QTY TYPE STRING,
FRWMG_ABD TYPE STRING,
FRRMG_ABD TYPE STRING,
BPFRW_ABD TYPE STRING,
BPFRR_ABD TYPE STRING,
BPNAW_ABD TYPE STRING,
FNWMG_ABD TYPE STRING,
BPFNW_ABD TYPE STRING,
MAA_BNK_KONV TYPE STRING,
KNUMH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKBNK_N_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_EKBNK_N_STR-CMENGE sy-vline 
WA_EKBNK_N_STR-CWERT sy-vline 
WA_EKBNK_N_STR-EBELN sy-vline 
WA_EKBNK_N_STR-EBELP sy-vline 
WA_EKBNK_N_STR-STUNR sy-vline 
WA_EKBNK_N_STR-ZAEHK sy-vline 
WA_EKBNK_N_STR-KWERT sy-vline 
WA_EKBNK_N_STR-KWRFW sy-vline 
WA_EKBNK_N_STR-WAERS sy-vline 
WA_EKBNK_N_STR-HWAER sy-vline 
WA_EKBNK_N_STR-REWAE sy-vline 
WA_EKBNK_N_STR-KVSL1 sy-vline 
WA_EKBNK_N_STR-KVSL2 sy-vline 
WA_EKBNK_N_STR-LIFNR sy-vline 
WA_EKBNK_N_STR-FRWMG sy-vline 
WA_EKBNK_N_STR-FRWWR sy-vline 
WA_EKBNK_N_STR-FRWFR sy-vline 
WA_EKBNK_N_STR-FRRMG sy-vline 
WA_EKBNK_N_STR-FRRWR sy-vline 
WA_EKBNK_N_STR-FRRFR sy-vline 
WA_EKBNK_N_STR-FRAWE sy-vline 
WA_EKBNK_N_STR-FRAWW sy-vline 
WA_EKBNK_N_STR-XBLNR sy-vline 
WA_EKBNK_N_STR-FRBNR sy-vline 
WA_EKBNK_N_STR-KSCHL sy-vline 
WA_EKBNK_N_STR-VTEXT sy-vline 
WA_EKBNK_N_STR-BEWTP sy-vline 
WA_EKBNK_N_STR-FRERF sy-vline 
WA_EKBNK_N_STR-NAWMG sy-vline 
WA_EKBNK_N_STR-NAWWR sy-vline 
WA_EKBNK_N_STR-NAWFR sy-vline 
WA_EKBNK_N_STR-FNWMG sy-vline 
WA_EKBNK_N_STR-FNWWR sy-vline 
WA_EKBNK_N_STR-FNWFR sy-vline 
WA_EKBNK_N_STR-RETPO sy-vline 
WA_EKBNK_N_STR-VOBNK sy-vline 
WA_EKBNK_N_STR-BPFRW sy-vline 
WA_EKBNK_N_STR-BPFRR sy-vline 
WA_EKBNK_N_STR-BPNAW sy-vline 
WA_EKBNK_N_STR-BPFNW sy-vline 
WA_EKBNK_N_STR-XBPRM sy-vline 
WA_EKBNK_N_STR-VNETW sy-vline 
WA_EKBNK_N_STR-VMENG sy-vline 
WA_EKBNK_N_STR-BNKTK sy-vline 
WA_EKBNK_N_STR-PREDC sy-vline 
WA_EKBNK_N_STR-FRAWB sy-vline 
WA_EKBNK_N_STR-FRRWB sy-vline 
WA_EKBNK_N_STR-XBESW sy-vline 
WA_EKBNK_N_STR-KUDIF sy-vline 
WA_EKBNK_N_STR-KUDIF_GR sy-vline 
WA_EKBNK_N_STR-KUDIF_IR sy-vline 
WA_EKBNK_N_STR-KUFIX sy-vline 
WA_EKBNK_N_STR-XHISTMA sy-vline 
WA_EKBNK_N_STR-WKURS_GR sy-vline 
WA_EKBNK_N_STR-WKURS_IR sy-vline 
WA_EKBNK_N_STR-PARKED_QTY sy-vline 
WA_EKBNK_N_STR-FRWMG_ABD sy-vline 
WA_EKBNK_N_STR-FRRMG_ABD sy-vline 
WA_EKBNK_N_STR-BPFRW_ABD sy-vline 
WA_EKBNK_N_STR-BPFRR_ABD sy-vline 
WA_EKBNK_N_STR-BPNAW_ABD sy-vline 
WA_EKBNK_N_STR-FNWMG_ABD sy-vline 
WA_EKBNK_N_STR-BPFNW_ABD sy-vline 
WA_EKBNK_N_STR-MAA_BNK_KONV sy-vline 
WA_EKBNK_N_STR-KNUMH sy-vline      INTO ld_text SEPARATED BY SPACE.

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