ABAP Select data from SAP table ICASHJNLPOS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICASHJNLPOS
*  INTO TABLE @DATA(IT_ICASHJNLPOS2).
*--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_ICASHJNLPOS INDEX 1 INTO DATA(WA_ICASHJNLPOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICASHJNLPOS>-MANDT = 1.
<ICASHJNLPOS>-COMPANYCODE = 1.
<ICASHJNLPOS>-CASHJOURNAL = 1.
<ICASHJNLPOS>-FISCALYEAR = 1.
<ICASHJNLPOS>-CASHJOURNALDOCUMENTINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICASHJNLPOS-CASHJOURNALDOCUMENTITEM, sy-vline,
  WA_ICASHJNLPOS-LANGUAGE, sy-vline,
  WA_ICASHJNLPOS-CURRENCY, sy-vline,
  WA_ICASHJNLPOS-CASHJOURNALITEMTYPE, sy-vline,
  WA_ICASHJNLPOS-CASHJOURNALTRANSACTION, sy-vline,
  WA_ICASHJNLPOS-TAXAMOUNTINTRANSCRCY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICASHJNLPOS 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_ICASHJNLPOS 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_ICASHJNLPOS INTO WA_ICASHJNLPOS.


*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 GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICASHJNLPOS-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICASHJNLPOS-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ICASHJNLPOS-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICASHJNLPOS-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field TAXAMOUNTINTRANSCRCY
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ICASHJNLPOS-TAXAMOUNTINTRANSCRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICASHJNLPOS-TAXAMOUNTINTRANSCRCY.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CUSTOMERNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICASHJNLPOS-CUSTOMERNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICASHJNLPOS-CUSTOMERNUM.
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_ICASHJNLPOS_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
CASHJOURNAL TYPE STRING,
FISCALYEAR TYPE STRING,
CASHJOURNALDOCUMENTINTERNALID TYPE STRING,
CASHJOURNALDOCUMENTITEM TYPE STRING,
LANGUAGE TYPE STRING,
CURRENCY TYPE STRING,
CASHJOURNALITEMTYPE TYPE STRING,
CASHJOURNALTRANSACTION TYPE STRING,
TAXAMOUNTINTRANSCRCY TYPE STRING,
CASHJOURNALRECEIPTAMOUNT TYPE STRING,
TAXRATE TYPE STRING,
COSTCENTER TYPE STRING,
PROFITCENTER TYPE STRING,
BUSINESSAREA TYPE STRING,
CASHJOURNALDOCUMENTTRANSTYPE TYPE STRING,
TAXCODE TYPE STRING,
GLACCOUNT TYPE STRING,
CASHJOURNALDOCUMENTITEMTEXT TYPE STRING,
SUPPLIER TYPE STRING,
CUSTOMERNUM TYPE STRING,
PERSONNELNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICASHJNLPOS_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_ICASHJNLPOS_STR-MANDT sy-vline 
WA_ICASHJNLPOS_STR-COMPANYCODE sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNAL sy-vline 
WA_ICASHJNLPOS_STR-FISCALYEAR sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALDOCUMENTINTERNALID sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALDOCUMENTITEM sy-vline 
WA_ICASHJNLPOS_STR-LANGUAGE sy-vline 
WA_ICASHJNLPOS_STR-CURRENCY sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALITEMTYPE sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALTRANSACTION sy-vline 
WA_ICASHJNLPOS_STR-TAXAMOUNTINTRANSCRCY sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALRECEIPTAMOUNT sy-vline 
WA_ICASHJNLPOS_STR-TAXRATE sy-vline 
WA_ICASHJNLPOS_STR-COSTCENTER sy-vline 
WA_ICASHJNLPOS_STR-PROFITCENTER sy-vline 
WA_ICASHJNLPOS_STR-BUSINESSAREA sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALDOCUMENTTRANSTYPE sy-vline 
WA_ICASHJNLPOS_STR-TAXCODE sy-vline 
WA_ICASHJNLPOS_STR-GLACCOUNT sy-vline 
WA_ICASHJNLPOS_STR-CASHJOURNALDOCUMENTITEMTEXT sy-vline 
WA_ICASHJNLPOS_STR-SUPPLIER sy-vline 
WA_ICASHJNLPOS_STR-CUSTOMERNUM sy-vline 
WA_ICASHJNLPOS_STR-PERSONNELNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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