ABAP Select data from SAP table FKC_CONTR_ACC_UPDATE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKC_CONTR_ACC_UPDATE
*  INTO TABLE @DATA(IT_FKC_CONTR_ACC_UPDATE2).
*--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_FKC_CONTR_ACC_UPDATE INDEX 1 INTO DATA(WA_FKC_CONTR_ACC_UPDATE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKC_CONTR_ACC_UPDATE>-SND_TECH_ID = 1.
<FKC_CONTR_ACC_UPDATE>-AKTYP = 1.
<FKC_CONTR_ACC_UPDATE>-VKONTO = 1.
<FKC_CONTR_ACC_UPDATE>-PARTNER = 1.
<FKC_CONTR_ACC_UPDATE>-VKTYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKC_CONTR_ACC_UPDATE-APPLK, sy-vline,
  WA_FKC_CONTR_ACC_UPDATE-VKONA, sy-vline,
  WA_FKC_CONTR_ACC_UPDATE-FKKVK_DI, sy-vline,
  WA_FKC_CONTR_ACC_UPDATE-VKBEZ, sy-vline,
  WA_FKC_CONTR_ACC_UPDATE-NODATA, sy-vline,
  WA_FKC_CONTR_ACC_UPDATE-XUPDTASK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKC_CONTR_ACC_UPDATE 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_FKC_CONTR_ACC_UPDATE 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_FKC_CONTR_ACC_UPDATE INTO WA_FKC_CONTR_ACC_UPDATE.


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

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKC_CONTR_ACC_UPDATE-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKC_CONTR_ACC_UPDATE-PARTNER.
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_FKC_CONTR_ACC_UPDATE_STR, 
SND_TECH_ID TYPE STRING,
AKTYP TYPE STRING,
VKONTO TYPE STRING,
PARTNER TYPE STRING,
VKTYP TYPE STRING,
APPLK TYPE STRING,
VKONA TYPE STRING,
FKKVK_DI TYPE STRING,
VKBEZ TYPE STRING,
NODATA TYPE STRING,
XUPDTASK TYPE STRING,
XCOMMIT TYPE STRING,
XCHDOC TYPE STRING,
XTEST TYPE STRING,
VALDT TYPE STRING,
XCHECK_ONLY TYPE STRING,
XKEEP_MEMORY TYPE STRING,
RESP_VW_SPEC TYPE STRING,
PART_REL_LOCK_REQSTD TYPE STRING,
PART_REL_CORR_RECIP_REQSTD TYPE STRING,
PART_REL_CHGDISC_REQSTD TYPE STRING,
TAX_EXEMPT_REQSTD TYPE STRING,
T_FKKVKP_DI TYPE STRING,
T_FKKVKLOCK_S_DI TYPE STRING,
T_FKKVK_CORR_S_DI TYPE STRING,
T_FKKVK_TAXEX_S_DI TYPE STRING,
T_FKKVKP_CHGDISC_S_DI TYPE STRING,
T_DATA TYPE STRING,
T_MESSAGE TYPE STRING,
T_KEYVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKC_CONTR_ACC_UPDATE_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_FKC_CONTR_ACC_UPDATE_STR-SND_TECH_ID sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-AKTYP sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-VKONTO sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-PARTNER sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-VKTYP sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-APPLK sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-VKONA sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-FKKVK_DI sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-VKBEZ sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-NODATA sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-XUPDTASK sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-XCOMMIT sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-XCHDOC sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-XTEST sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-VALDT sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-XCHECK_ONLY sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-XKEEP_MEMORY sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-RESP_VW_SPEC sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-PART_REL_LOCK_REQSTD sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-PART_REL_CORR_RECIP_REQSTD sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-PART_REL_CHGDISC_REQSTD sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-TAX_EXEMPT_REQSTD sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_FKKVKP_DI sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_FKKVKLOCK_S_DI sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_FKKVK_CORR_S_DI sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_FKKVK_TAXEX_S_DI sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_FKKVKP_CHGDISC_S_DI sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_DATA sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_MESSAGE sy-vline 
WA_FKC_CONTR_ACC_UPDATE_STR-T_KEYVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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