ABAP Select data from SAP table IDCN_ZJFSTR_POST_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDCN_ZJFSTR_POST_DATA
*  INTO TABLE @DATA(IT_IDCN_ZJFSTR_POST_DATA2).
*--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_IDCN_ZJFSTR_POST_DATA INDEX 1 INTO DATA(WA_IDCN_ZJFSTR_POST_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDCN_ZJFSTR_POST_DATA>-WTCODE = 1.
<IDCN_ZJFSTR_POST_DATA>-WBUKRS = 1.
<IDCN_ZJFSTR_POST_DATA>-WWAERS = 1.
<IDCN_ZJFSTR_POST_DATA>-WBLART = 1.
<IDCN_ZJFSTR_POST_DATA>-WBUDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDCN_ZJFSTR_POST_DATA-WBLDAT, sy-vline,
  WA_IDCN_ZJFSTR_POST_DATA-WMONAT, sy-vline,
  WA_IDCN_ZJFSTR_POST_DATA-WXBLNR, sy-vline,
  WA_IDCN_ZJFSTR_POST_DATA-WBKTXT, sy-vline,
  WA_IDCN_ZJFSTR_POST_DATA-WDARE, sy-vline,
  WA_IDCN_ZJFSTR_POST_DATA-WAVERE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDCN_ZJFSTR_POST_DATA 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_IDCN_ZJFSTR_POST_DATA 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_IDCN_ZJFSTR_POST_DATA INTO WA_IDCN_ZJFSTR_POST_DATA.


*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 AC152, internal->external for field WSALDO
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_POST_DATA-WSALDO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_POST_DATA-WSALDO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WSALD2
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_POST_DATA-WSALD2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_POST_DATA-WSALD2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WSALD3
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_POST_DATA-WSALD3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_POST_DATA-WSALD3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WSALD4
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_POST_DATA-WSALD4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_POST_DATA-WSALD4.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field WCONTODX
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDCN_ZJFSTR_POST_DATA-WCONTODX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDCN_ZJFSTR_POST_DATA-WCONTODX.
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_IDCN_ZJFSTR_POST_DATA_STR, 
WTCODE TYPE STRING,
WBUKRS TYPE STRING,
WWAERS TYPE STRING,
WBLART TYPE STRING,
WBUDAT TYPE STRING,
WBLDAT TYPE STRING,
WMONAT TYPE STRING,
WXBLNR TYPE STRING,
WBKTXT TYPE STRING,
WDARE TYPE STRING,
WAVERE TYPE STRING,
WSALDO TYPE STRING,
WSALD2 TYPE STRING,
WSALD3 TYPE STRING,
WSALD4 TYPE STRING,
WCDCA TYPE STRING,
WCDCD TYPE STRING,
WSECO TYPE STRING,
WCONTOA TYPE STRING,
WCONTOD TYPE STRING,
WKOART TYPE STRING,
WFATTD TYPE STRING,
WFATTA TYPE STRING,
WIVAD TYPE STRING,
WIVAA TYPE STRING,
WSCADA TYPE STRING,
WSCADD TYPE STRING,
WCESD TYPE STRING,
WCESA TYPE STRING,
WBZDAA TYPE STRING,
WBZDAD TYPE STRING,
WZUONR TYPE STRING,
WSGTXT TYPE STRING,
WTIPOD TYPE STRING,
WTIPOA TYPE STRING,
WCONTOAX TYPE STRING,
WCONTODX TYPE STRING,
WKOARTXD TYPE STRING,
WKOARTXA TYPE STRING,
WKOARTX TYPE STRING,
FAUS1 TYPE STRING,
FAUS2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDCN_ZJFSTR_POST_DATA_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_IDCN_ZJFSTR_POST_DATA_STR-WTCODE sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBUKRS sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WWAERS sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBLART sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBUDAT sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBLDAT sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WMONAT sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WXBLNR sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBKTXT sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WDARE sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WAVERE sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSALDO sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSALD2 sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSALD3 sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSALD4 sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCDCA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCDCD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSECO sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCONTOA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCONTOD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WKOART sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WFATTD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WFATTA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WIVAD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WIVAA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSCADA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSCADD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCESD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCESA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBZDAA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WBZDAD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WZUONR sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WSGTXT sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WTIPOD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WTIPOA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCONTOAX sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WCONTODX sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WKOARTXD sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WKOARTXA sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-WKOARTX sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-FAUS1 sy-vline 
WA_IDCN_ZJFSTR_POST_DATA_STR-FAUS2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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